JPS6059307A - Ferrule for optical connector and its production - Google Patents

Abstract

PURPOSE:To extend the life of a drill edge, etc. in the stage of working and to improve workability by manufacturing a ferrule body of a resin contg. an inorg. packing material having >=2Mohs hardness and manufacturing an inserting hole part of a soft resin. CONSTITUTION:A hole 16 for introducing an optical fiber core is provided in the central part of a ferrule body 14 and a closing part 17 having a hole 18 for insertion of an optical fiber strand is provided at the center of the top end part thereof. A resin having low shrinkability is preferable as the resin to be used for the body 14. The system which has not only low dimensional change with temp., humidity and chemicals, etc. but also excellent mechanical characteristics such as wear resistance and bending strength, etc. and is added with an inorg. filler having >=2Mohs hardness is used for said resin. An epoxy (phenolic or unsatd. polyester) resin and others such as polycarbonate are used for the resin. Silicon carbide, silica, etc. are preferred for the filler. The resin having good adhesiveness and drill workability is applied for the resin for the part 17.

Description

[Detailed description of the invention] Concerning nectarine erule and its M force method/) 0 The conventional 1-element 2-erule for carp/lid is a transfer of ripe hardening fat containing unridged, reduced horizontal material, etc. Ikenetsu 0J plastic 81: Molded by injection molding of scooped Bi, the hole for inserting the former fiber gland in the middle part of the ferrule edge was also re-arranged in the mold during F molding. When did you become a swordsmith at the same time? Power while being strong
In case of heavy terrain, there are many problems such as quick degassing in the kasaya and how to remove the molded parts from the kasa. In other words, a core bin 8 for forming a hole for inserting an X:7 cable gland is reinstalled at the bottom of the hollow cavity 6 shown in Figure 1.
It cost 8! ! One machine is used to mold the seeds, and a 4km stainless steel pipe for degassing is required, as well as a valve body for removing the dregs from the young fruit and light! The work of setting the pipe into the mold was dented by the JJA navy blue, which significantly reduced workability and resulted in poor mass production, as shown in Ryo's second cause. For the core pin holder, the hole 9 is re-installed in the hill part of the cavity 6, and in the case of a molded child, a hole for inserting a single fiber system is formed. If the clearance is large, the gas will be vented @kh71, so if the clearance is large, it will not be possible to release light gas. Sorry, the surrounding area is big (
Is the eccentricity of the hole for the heavy optical fiber wood wire intermediary used as a phenol marker? If the clearance is made smaller for the purpose of ejecting the fiber, the core pin holder will be inserted into the hole 9. There is a serious problem that the core bottle 8 is broken when inserted.Also, since the core bottle 8 is broken during molding, it is difficult to transfer the mold when molding. Does molding pressure affect the degree of busyness?
Do not mold it under high pressure. Therefore, when molding is carried out using a L-shaped mold in the first machining process, the length of the mold is approximately 2 to 4 times the outer diameter. It is difficult to remove the mold from 6 because it is under reduced pressure, and the neo-U has a problem in terms of price due to the deterioration of vaginal performance.

In this process, the hole for the ferrule is made at the same time as the molding process.The size and shape ellipse of the ferrule molded product are improved efficiently (the disadvantage of not being able to be molded is Rarely.

So, I decided to try my hand at sledding and molding the epoxy street resin tranmen 1! 7. I tried the 7ζ errule machining method by using a drill knife with an L-shape to drill into the hole for the master. The ferrule molding mold with excellent outer diameter axiality used in this process includes a core bin for forming a hole for extending the optical fiber, and a core 12 for communicating with outside air. The core holder for communicating with outside air has a structure with holes 16.
In case of core structure using gold layer, core 12 for open air connection is used.
(φ0.5 mm) and core for outside air communication Shinjinto 16 (φ0.5 mm)
Lightly degassing can be performed from the gap (Q, i mn+ ) of 0.7 mm), and by removing the outside air communication core 12 and the outside air communication core Gojinto 16 in advance of demolding, the two-work rule can be achieved. The tip of the molded product communicates with the outside air,
Since the reduced pressure inside the cavity 6 can be avoided, demoldability is poor and the same as above.

However, when I tried using this method to form a hole for the 9-hole fiber thread drawer using a drill with a diameter of 0.126 ml in the 5R: part of the tip of the molded product, I
The tip of the L9 drill was noticeably worn into the silica powder, creating a sharp bend.

We proceeded with the investigation by δ and others using 1ζ viscous rice, a ferrule body with a hole larger than the diameter of the original fiber system in the rounded core, and a ferrule body with a hard unprotected light horizontal material. The transparent hole is formed with a relatively red lateral bend, and the closed base has a transparent hole T for inserting a light eyelid prosthesis, which makes it more dazzling. Noelur, who was a samurai, led to the invention of money.

In other words, it is a resin surface without legs core type for carp and lid, and it is made from resin containing a material with a hardness of Mohs hardness of 2 or more. The part that meets the hole for the 2nd Aiba gland god is the ferrule body V.
Composed of a red resin, it is made of a resin with an optical filler of 2% or more for optical connectors. Two large l-diameter through-holes; 2-way rule body = bx shape; @ through hole The through hole for insertion is in the method of making the hole, also known as the C-ridge, and the two errules for the holder.

The present invention will be described below with reference to the drawings showing examples thereof.
Then, in Fig. 4, the main body of the 14-inch construction rule is provided with a hole 16 for inserting an optical fiber into the main body, and an optical fiber storage insertion hole 18 is provided in the center at the tip.
It consists of 17 closed capitals.

As for the side bending used in the uninvented 2-work rule ``14'', it seems that the low yield and low quality of the material is a mystery, and the buttons are also low in humidity and become mulberry products, etc. Of course, it is necessary to maintain a high level of mechanical properties such as abrasion resistance and strength. The resin used is epoxy thread resin, phenol thread resin, thermosetting resin such as unsaturated polyester resin, etc.
Other polycarbonate, polybuterene terelentate, 'E7CH boline enylene sulfide Q) fp g engineering plastic fats are also used. The hardness of the Mohs scale is 2 or 2 as a material that is distributed to the public.
Above are the ashing silicon, solica s kIa calciwaum, etc. 1/J powder 9 course, glass fiber etc. extremely m shape vli, history 01 wandering gold temple r opening 'C monkey basket IL
In addition, it is limited to nurumono r: Kei (, light member U) Katake is also limited to the Duke, but - to the side to the government (1) The child is 60 to 8 Q wt%. I, fl base tJ 17 is used to form a hole 18τ in the length of the optical fiber base. The length of the optical fiber main line insertion hole 18 may be 7ζ, but the hardness of the optical member should be C Mohs 2 hardness. , a little l (with the length n such that the optical fiber thread is held in one piece within the hole, γLid′ × 10 plus 12, but the size, shape, etc.) It is difficult to reduce the temperature to Vp1 degree, and the workability also decreases, so it is preferable to set the temperature to 0.5 to 6.
III[I+ level.

Next is Doi ferrule 1!7! Regarding the construction of ε, a pore 15'i larger than the original fiber cable diameter is formed by transfer molding or injection molding, which is described in the shell.
After making the main hole 14 and closing the above-mentioned hole 157 with a more flexible resin, I decided to drill the original fiber gland entry hole 18τ again. . Drilling method, laser method, and water jet method are used for drilling hole 18 for the former fiber cable gland.

Although the electron beam method and the like are commonly used, a drill Bf: is preferably used.

The ferrule body 14 has a glaze hole shape BFC shown in the fifth row.
A core pin 11 for use in the molding process is installed in the cavity 6, and a hole 19 is provided at the bottom of the core pin receiver for forming a pore.

The outer diameter of the end of the core bottle 11c for forming the optical fiber is larger than the value of the core of the device when drilling the hole for the optical fiber. Pore 1 in dimensions
5 In purple formation, n is sometimes sleepy, and 10 is not good, but it is better to prevent fracture and analysis during molding. A diameter smaller than the outer diameter of the ferrule is used.

The material and shape of Core Hin 11 are also the target diameter J-9 of the original fiber wire, which is large in size and has a pore + 5'5.
S K H = 9 or a cylindrical one made of l'JsKD-61 is used.

The core bin 11 for forming pores and the core receiver for forming pores used in the invention are in the clearance of 19, and what does the handling of waste inside the cavity 3 mean to the light beam? Although it is not a problem, it is preferably about 20 to 400 μm.

Example 1 The material used was epoxy molding material CEL-7000 (silica powder (Mohs acidity 7) manufactured by Hitachi Chemical Co., Ltd.
) 70% content] t, Lvfl: was manufactured for transfer molding using a mold τ having the structure t+1 of FIG. 5 as Venus.

Gold amount σ Out of the tip (φ0.5+nmX t' 5mtu) of the pore-forming core pin 11 that forms the 1st pore, the length Q, 8+nm is located in the center of the 6-bottom cavity. Entering 19 (φ (17mmXO, 8mm
) inserted into the n1 part (diameter 1.0mm), 12
mm is cavity 317"], 22.5 m 11, and a Shuntou V Gostopper 10 was placed outside the cavity 6 to prevent movement due to resin pressure during molding.

Next, the pores 15 of the molded product produced by the above method were closed with epoxy thread resin from the tip to fl O,7+11111, and a thread of 126 μm and 09 m in length was inserted directly into the center of the end face of the defeated product.
A hole 1B2 for inserting the original fiber forest with a diameter of 125 μm was made using a drill of 1.0 m. Similarly, he used the same drill to drill 18 holes for the insertion of 100 fibers, and when he threaded the drill bit across the length of the drill bit, it was hardly noticeable. In addition, the drilling of Mohs f & degree 2 drilling is talc (Mohs hardness 1) 560 heavy elutriation, and the platform using epoxy resin as a blockage/4:l resin also has a noticeable impact on the drilling force. z : z [lI), the outer radius was 1.8 .mu.m because gas was removed from the light beam. Therefore, when drilling the L9 fiber-based gland hole 18i at the tip of the drill, it is necessary to center the canopy so that the fiber diameter is 2 μm. Since the tip of the ferrule molded product has a slow communication with the outside air, it was possible to connect to each station.Next, add the ferrule L9 made to the ferrule and add 1 to find the connection loss [sub. The added value is 0.45d.
B'''C rare 0 ma'fcs heat cycle test (-
20℃-2h, -20℃→80℃ vortex rising time 1h, 80℃
-2h, 80℃ → -20℃ descending time Ih, io cycle), and when I added the connection characteristics L of the test before the test and the input/output V of the original fiber 6114, I found that the vibration of the connection characteristics was 0id.
B (10 samples, the end of the original fiber), the penetration of ingress and egress was 0.6 μm (10 samples) 0 Comparison ν'0 Using firefly-shaped purple of silk 6, Example 1 My colleague and I were very busy with the transfer of materials. Then, in the same manner as described in 1, a hole for inserting the optical fiber cable #I of the drill was drilled into the center of the end face of the molded product, and the hole for insertion of the drill bit was drilled in the same manner as in 1. No shore wear was observed.

Is the IL parent tL with a drill bit in the nuclear force transmission the same initial attachment property as in Example 1? Published by Nerul rJ obtained t'L
7c conducted the same heat cycle test as in Example 1, and found that the average loading of the connection characteristics was 118 dB (1 sample number).
0), average change in entry and exit from Kounaiba! i was 1.5 μm.

It is clear from the above explanation that if it is uninventive, then 1
The core bin 11 for forming pores and the core bin holder for forming pores have a P between the hole 190.
Since the Jjf can be made larger, it is possible to do anything with the era name, and since the gap between the hole 19 and the outside air is slow to move between the pore-forming core bin 11 and the pore-forming core bin 'receiver, it is possible to mold each station. Due to the defect of the product, there was significant wear and tear on the tip of the drill, which was a problem when drilling with a hole for inserting a fiber cable into the hole for inserting a fiber cable. The part where the hole is drilled is t2.
Same as above.

In addition, in the resin shell, a hole for inserting a 2-erule light cable with an inventive design of 1" is formed, and the L-Vc removal molding area 1 of the conventional 2-errule molding is added to the resin shell. l
Inject I and enter <11n'', 1 person mM%
And it is also advantageous in terms of adhesion between the fleur and the original fiber.

[Brief explanation of the drawing]

Figures 2 and 3 are schematic diagrams of the cross-sectional structure of a conventional ferrule mold, and Figure 4 shows a part of the ferrule according to the invention.7! : A sectional view, and FIG. 5 is a schematic cutaway view of the # side 4s of the mold used in Example 1 of the present invention. Explanation of symbols 1 Upper ring 2 Lower mold 6 Cavity 4 Pipe 5 Sugeru 6 Gate runner 7 Ring gate 8 Core bin 9 Core pin receiver is hole 10 Stopper 11 Core bin for pore formation 12 Core bin for outside air S 15 pore 16
Ex-fiber cord access hole 17 Closed base 18 Optical fiber cable gland access hole Written amendment (method) % formula %] Indication of the case 1982 Patent Application No. 167911 2 Name of the invention New rule for connectors and its manufacturing method 3 Person making the amendment 11llfπ Patent applicant name (445) Hitachi Kasei Kogyo Co., Ltd. 4, Agent Hitomikyo 2ψ” Full text and drawing 7/Amended content

Claims (1)

[Scope of Claims] 1. Side-molded fish-like, fish-shaped light carp, 2 errules for the lid, 2 errules made from resin containing a light-purchased light material with a Mohs hardness of 2 or more. In the part where the hole for the former Naiba-based Katsujinjin is placed, there are 6 ribs on the side where there is no L-ri (Iff).
2 Erno ν for the original connector, which is very sensitive. 2.Make full use of materials with Mohs hardness of 2 or more.
In 1999, Shigeko's Errule book dedication button was completed, and the through hole in B14JJili was blocked by the 2nd rule main fee 9 red car 800, so a through hole for the ex-fiber factory was drilled in the same Kaiki district. There are 5 methods for making the same rules for the production of the vines and the vines.