JPS58154802A - Instrument for processing terminal of optical fiber core - Google Patents

Abstract

PURPOSE:To allow the same instrument to remove a coating from an optical fiber core and also cut a strand by forming grooves for holding a coating removing knife edge for the optical fiber core, and a cutting knife edge for the strand, and the core in the main body of an optical fiber core processing instrument. CONSTITUTION:The optical fiber core is fixed in holding grooves 11 and 11'. Then when force is applied to terminal proessing instrument bodies 15 and 15', removing knife edges 9 and 9' cut coatings 2 and 3 and at the same time, the cutting knife edge 10 makes a flaw 16 in the strand 1. Then, as the force to the terminal processing instruments is relaxed, the coating removing knife edges 9 and 9' and cutting knife edge 10 are moved back and when the optical fiber core is held in one hand and the terminal processing instrument bodies 15 and 15' are moved in an axial direction of the optical fiber core, holding parts 12 and 12' moves while holding the coatings 1 and 3 by frictional force, etc., to cut optical fiber strand 1. Thus, the coating removal of the opetical fiber core and the cutting of the strand are carried out by the same instruments.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that simultaneously removes the coating from an optical fiber and cuts the optical fiber.

Compared to conventional metal transmission lines, fiber optic wires are lighter, have superior flexibility, and offer high capacity transmission.
Although it has a % length such as being a rudder and being unguided,
Since the material is glass, it breaks very easily. As shown in FIG. 1, the optical fiber tree 1 has a primary coverage ei<
Silicone, etc., outer diameter 400° μm)s, secondary contact (nylon, etc., outer diameter approximately Q (1 (1 μm) 8),
Generally used as optical fiber. The optical fiber element l1i1 is protected from external forces by the primary cover and the secondary liquid so as not to be damaged.

By the way, in order to connect the original fiber core wire,
must be removed to expose the optical fiber. For this purpose, as shown in FIG. 2, the secondary coating of the optical fiber end is first removed, and then absorbent cotton, gauze, etc. impregnated with acetone or ethyl alcohol, etc.
Using a paper towel, rub the optical fiber water line in the axial direction to
Cut the Hikari 7 Aipah Soten using a primary bar cutter or the like so as not to cut it into pieces.

After making a minute scratch on the surface of this cutter #i**, bending stress and tensile stress are applied to the cable wire at once, causing a sudden scratch and cutting the wire. Figure 4 shows the state after cutting. Optical fiber material! l is the desired length,
Then, the end face is cut so as to be straight in the axial direction.

In this terminal forming method, a coating remover as shown in FIG. 5 was used to remove the secondary coating.

Explain how to use this device. Fuzu Hikari 7 Aipashin mt-
After attaching the optical fiber core guide 6K, further attach the handle 74C.
When force is applied, the secondary model removal blades 8, 8' damage the secondary coating in both directions 8, as shown in figure wJa. At this time,
Hikari 7 Aipa element @KFi The shape of the blade is adjusted to prevent scratches.
The spacing has been adjusted. Next, by grasping the handle and applying force in the axial direction of the optical fiber core, only the secondary coating of the blade is pushed out in the axial direction of the optical fiber core, and the secondary coating 1 is removed, as shown in Figure 7. I can do it.

Only 1. This method requires 8 steps of work including removal of the secondary coating, removal of the secondary coating, and cutting of the optical fiber wire, as well as equipment and utensils suitable for the purpose. The process was complicated and had the disadvantage of poor work efficiency and economy.

By the way, in the above method, the length of the optical fiber wire is 16-
The ends of the two optical fibers are as follows.

When the ends of the optical fibers are processed and connected using a known optical fiber core fusion device, the length of the exposed portion of the optical fiber becomes 80g+1. As mentioned above, this agricultural and mountainous part is
Easy to scratch and break easily.

If there is no breakage in the main line or if it is extremely short, there will be almost no damage to the optical fiber, so...
The strength of the joints of single optical fibers increases dramatically.

[7 or l11] In the conventional method, the tensile stress and bending stress flow at +h+, so the optical fiber is cut very close to the machined part or when the wood does not protrude at all. 1, there will be an extreme difference in stress distribution between the covered part and the exposed part of the wire, resulting in irregular unevenness on the end face after cutting.If the end face of the wire after cutting is irregular, It is not possible to connect optical fiber wires.As described above, there is a drawback in that the above-mentioned terminal section cannot be made using conventional cutters.

Unexploded vAFi, the main body of the optical fiber core processor is equipped with a coating removal blade for the fiber core and a cutting blade for the JT7 fiber wire, or a contact removal blade that also serves as the cutting blade and the optical fiber core IIIt.
- It is characterized by having a retainer, and its purpose is to:
To make it possible to remove the coated optical fiber and to cut the bare optical fiber using the same device, and to cut the bare optical fiber using only the tensile force generated in the optical fiber by the force of removing the coating. It is in. Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 8 is a perspective view showing the configuration of an embodiment of this @Ming.
11. is a cutting blade for optical fiber wire; 11. l'l' is a holding groove for the optical fiber, 1m, 1m' is a holding part for the optical fiber, 18, 18', ] 4 is a spring, and 15° and 15' is the main body of the south end processor. Next, the operation of removing the coating of the optical fiber core wire using a keratin and cutting the optical fiber element IIm will be explained according to the procedure.

FIG. 9 shows a state in which the optical fiber core wire is fixed in the holding groove. At this time, the upper part of the terminal to be removed is firmly gripped by the holding part.

Next, as shown in FIG. 10, when force is applied to the end processor main body, the removal blade 9.9' cuts 11114!1, and at the same time the cutting blade 10 makes a scratch 16 on the wood wire. A predetermined blade pressure is applied to both blades by a spring, and the coating is always cut under the same conditions. The scratches on the surface of the optical fiber wood line are 7 Ju on the blade.
It is known that if the applied blade pressure is constant, scratches of the same size will be created. After this, when the force applied to the terminal processor body is loosened, as shown in Figure 11, the removed blade and cutting blade are removed, and the optical fiber core is held with one hand.
As shown in the 12th figure, the main body of the terminal processing line 1' 5, 1
When 5' is moved in the axial direction of the optical fiber, the holding portion 18°111' holds the coating by sa force or sawtooth-like unevenness. At the same time as the coating is removed, a tensile force is applied to the strand due to the frictional force between the substrate and the strand, and the optical fiber strand forms an end face 17 perpendicular to the axial direction. It will be cut like this. FIG. 18 shows a good condition with the coating completely removed.

As mentioned above, the distance between the coating removal blade and the cutting blade is determined according to the desired length of the optical fiber.

Further, the blade pressure applied to the cutting blade and the length from the end of the optical fiber strand before cutting to the cutting blade are determined by the mutual relationship between the two. As shown in Fig. 14, the length from the end of the strand before cutting to the cutting blade is proportional to the tension line seen in the strand, according to Miyauchi et al. In 1938, the National Conference of the Institute of Electronics and Communication Engineers, Communication Division, was held at Mu8.
You can easily know from 08. Although the breaking force due to tension and the depth of the scratch on the 19-optical fiber material vary depending on the type of material, there is a certain relationship. Moreover, the depth of the wound depends on the pressure of the cutting blade. Moreover, Sanyo et al.
According to ``A Study of Stress Cutting of Optical Fibers'', 156 Shoki 1st National Conference of the Telecommunications Society of Electronic Banking Corporation, Mu δ02, there is an optimum breaking force for optical fiber strands.

Therefore, the blade pressure of the cutting blade and the length from the end of the optical fiber strand before cutting to the cutting blade can be determined depending on the strand to be cut, taking into account all of the above conditions. can.

FIG. 16 is a configuration diagram of another embodiment of the present invention, and is a state diagram before cutting the optical fiber core wire of an instrument having a cutting mechanism 18 in which the cutting blade for the optical fiber wire operates separately from the terminal processor main body. It is. The cutting blade is pushed upward by a spring 19, and after applying force to the terminal processor main body to cut the coating as shown in Figure 16, the cutting blade is pushed upward as shown in Figure 17. Lower it to make a scratch 16 on the optical fiber wire. Next, as shown in FIG. 18, when the force is released from the cutting blade, the cutting blade returns to its idle state. The subsequent operations and the state of the six optical fibers are the same as in the embodiment shown in FIG. 8 described above.

FIG. 19 is a block diagram of another embodiment of the present invention, with 20
, 20' is a coating removal blade for the optical fiber core, 21 is a cutting blade for the nine-fiber cable, 2g, and gg' are the holding grooves for the optical fiber core, sa, ms', ms, and ms.

g s' is a spring, go and is' are the terminal processor main body, and 3 ma is a cutting mechanism that moves the cutting blade separately from the main body. The distance between the coating removal blade and the cutting blade is determined according to the desired length of the optical fiber strand. Next, the operation of removing the coating of the optical fiber core wire and cutting the optical fiber strand using this will be explained in detail.

Figure 20 shows the state in which the original fiber core is fixed in the holding groove! Indicates I. Next, when force is applied to the main body as shown in FIG. 111, the coating removal blade cuts the coating.

After that, when the optical fiber cutting blade is pushed down, the 11th
As shown in Figure 8, the cutting blade makes a scratch on the optical fiber. Next, when the force is released from the cutting blade, the cutting blade returns to its original position as shown in FIG. The coating removal blade cuts the coating 6k and remains in good condition. As shown in Figure 84, when one optical fiber is held in one hand and the main body is moved in the axial direction of the optical fiber, the sheath removal blade pushes out the sheath of the optical fiber in the axial direction, and at the same time The coating and the strands create a tensile force on the optical fiber strands. In this way, as mentioned above, the optical fiber element lI! i! ＃′
The trap is cut to the desired length as shown in Figure 25.

As mentioned above, the cut plane is also perpendicular to the axial direction of the optical fiber.
Shadows are formed.

FIG. g6 is a block diagram of another embodiment of the present invention, and is
, as' is a sheathing removal blade whose part is the original fiber strand cutting blade, 29.89' is an optical fiber core holding mold,
80, 80', 81.81' are springs, a g,
a m' is the main body of the terminal processor, and 88 is a cutting mechanism that moves the blade to be removed. Figure g7 is an enlarged view of the caressing removal blade. The operation of cutting the main optical fiber using this will be explained step by step.

FIG. 28 shows a state in which the original fiber core wire is fixed to the holding case. Next, as shown in FIG. 29, when force is applied to the end processor main body, the sheath removal blade cuts the sheath. Furthermore, a force is applied to the mechanism that moves the blade to be removed (a), and as shown in FIG.

Thereafter, when the force is released from this mechanism, the removed blade returns to the position before it scratches the wood wire, as shown in Figure 81. Next, as shown in FIG. 82, hold the optical fiber core with one hand [7. When the main body is moved in the axial direction of the optical fiber core, the coating removal blade is pushed out in the axial direction of the optical fiber core, At the same time, a tensile force is generated in the optical fiber strand. In this way, as shown in FIG. 88, terminal No. 8 is formed in the optical fiber core wire, in which the original fiber strand does not come out from the center of the cored portion at all.

A structure in which a part of the coating removal blade is an optical fiber strand cutting blade is shown in FIG. 8 according to 1 of the present invention! - Can also be applied to examples.

As explained above, the optical fiber end processor of the present invention is equipped with a coating removal blade for the optical fiber core and a cutting blade for the optical fiber cable, and the pressure and interval of each blade can be adjusted. For example, stripping and cutting can be done with the same instrument;
Another advantage is that the optical fiber wire can be cut with only an appropriate tensile force.

In addition, if the sheath removal blade and the original fiber cable cutting blade can be used together, the optical fiber strands, which could not be processed with the conventional sheath removal-1 cutter, will protrude completely from the target. It has the advantage of being able to form scraps that have not yet been printed.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of the optical fiber core, Figure 8 is a schematic diagram of the optical fiber core with the secondary shield e1 removed using a conventional target remover, and Figure 8 is a schematic diagram of the optical fiber core with the primary target PJ completely removed. Fig. 4 is a schematic diagram of an optical fiber core, and Fig. 4 is a schematic diagram of a main optical fiber cut to a certain length using a conventional cutting method so that the end face is perpendicular to the axial direction. A perspective view of a conventional target remover; Figure 6 is a schematic diagram of a secondary target being cut by a conventional target remover; Figure 7 is a schematic diagram of a conventional target remover pushing out a secondary target. 8 is a perspective view showing the configuration of an embodiment of the present invention, FIG. 9 is a schematic diagram of an optical fiber core set in the embodiment of the present invention shown in FIG. 8, and FIG. S cut 11jr j, a schematic diagram of scratching the optical fiber wire, Figure 11 shows *The cutting and scratching of the ridge is completed

[, Figure 12 is a schematic diagram showing the beginning of coating removal and cutting of the optical fiber wood wire. A schematic diagram, FIG. 14 is a graph of the length of the free-width removal of a conventionally known optical fiber core wire and the tension appearing in the optical fiber strand, and FIG. 1s is a configuration diagram of another embodiment of the present invention, and FIG. 16 Figure 17 is a schematic diagram of cutting the coating, and Figure 17 is a schematic diagram of scratching the optical fiber.
FIG. 8 is a schematic view of the return position of the cutting blade, FIG. 19 is a perspective view showing the structure of another embodiment of the present invention, and FIG. 1114 is a schematic diagram of the line set, 1114 is a schematic diagram of cutting the target & 9th diagram, gg is a schematic diagram of scratching Hikari 7 Aipa Soten, Figure 88 is a 9th diagram of the cutting blade returning, 9th diagram Fig. g4 is a state diagram after liquid species removal and cutting of the original fiber element has started, Fig. 8S is a schematic diagram when cutting of the optical fiber element has been completed, and Fig. 86 is a further example of the book @ Ming. Diagram showing the configuration of ?1? The figure is an enlarged view of the coating removal blade.
Fig. 18 shows a frame 1 in which an optical fiber core is set in the embodiment of the present invention shown in Fig. s6. Fig. 29 shows a frame 4 in which an optical fiber core is set. Fig. 80 is a schematic diagram of cutting the main optical fiber, Fig. 81 is a schematic diagram of the horizontal removal H being returned, and Fig. 8g is a schematic diagram of removing the contact and cutting the optical fiber bare wire. Fig. 88 is a schematic diagram of the optical fiber terminal after the cutting of the optical fiber strand is completed. 1... Original fiber wire, 2...-water coating, 8...
Secondary liquid type, 4... Optical fiber core wire, 6... End face, 6
...Optical fiber core guide, f...handle, 8.8'.
...Secondary liquid type removing blade, 9.9'...Optical fiber core #1
A blade for removing the fibers, 10. A cutting blade for cutting the optical fiber wire, 11.
11'... Optical fiber core holding groove, 12.12'...
Optical fiber core holding section, 18. la', 14... Spring, 15, 15'... Main body of terminal processor, ]6...
Scratch, 17... End face, 18... Cutting mechanism,] 9,
l9'...Spring, go, go'...Optical fiber core liquid type removal blade, 21...Optical fiber strand cutting blade, 22.22'...Holding of optical fiber core groove, g
a, aa', g+, gs, g5'...Kene, 26°2
6'... Terminal processor main body, 87... Cutting mechanism, 28
゜28'...Original fiber/core wire contact removal blade, 29.29
'... Optical fiber core wire holding groove, 80.80', 81
゜a ]'...Spring, 82.82'... Terminal processor main body, 88... Cutting mechanism, 84... Terminal. Patent Applicant: Nippon Electric Power Corporation Figure 1 Figure 2 Figure 4 Figure 7 Figure 8 Figure 9 Figure 10

Claims (1)

[Claims] t. A groove for holding an optical fiber coated with nylon or the like; an optical fiber cutting blade for making minute scratches on the optical fiber; It has a coating removal blade that cuts in the circumferential direction and a holding part with an uneven surface that can apply force in the axial direction of the optical fiber core to the coating part of the optical fiber core. The cutting blade scratches the iron surface of the original fiber by a force perpendicular to , and the sheathing is cut by the sheathing removal blade, and then by applying an external force parallel to the optical fiber axis. An optical fiber end processor, characterized in that the sheath can be pulled out. In the optical fiber end processor according to claim 1, the one optical fiber strand cutting force is provided with a mechanism that can be moved separately from the main body of the optical fiber core TIJ end processor. An optical fiber core terminal featuring [! . IL In the optical fiber wire terminal processing device according to claim wJI, the holding portion does not have an uneven surface and is simply a groove for holding the optical fiber wire, and the holding portion has a groove for holding the optical fiber wire. After the wire cutting blade attaches the surface Kml of the optical fiber bare wire, it moves past the optical fiber fine C) 11 surface, and the coating removal blade pushes out the covered am,
It must be possible to pull out the covering part.
- Characteristic optical fiber end processor. Table: In the optical fiber end processor according to claim 1 or 8, a part of the coating removal blade is an optical fiber element cutting blade.
Optical fiber end processor.