JPH01254902A - Device for treating end face of optical fiber with mouthpiece - Google Patents

Abstract

PURPOSE:To eliminate the need for polishing and to reduce working stages and cost by adopting the constitution in which the end faces of optical fibers inserted into a mouthpiece so as to project therefrom are cut while having a certain angle with the fiber axis so that the smooth end faces are obtd. by one time of cutting. CONSTITUTION:Plural pieces of the plastic optical fibers are so inserted into the mouthpiece that the end faces thereof project from the end face of the mouthpiece. These fibers are fixed by caulking in a manner that the end face end of the mouthpiece is positioned flush with the face of a mouthpiece holder 3. A cutter edge, two pieces of supporting arms and the coupling point 6 of a cylinder shaft and a supporting arm 5d are set in the positions shown in the figure. The supporting arms 5c, 5d move toward arrows B1, B2 when the cylinder is moved in arrow A direction and the optical fibers projecting from the mouthpiece end are extremely easily cut. The cylinder shaft is necessitated merely to be moved in nearly the horizontal direction and the operability is extremely good. Since the cutter edge face is moved parallel from the direction diagonal to the optical fiber axis, the excess parts of the optical fibers are cut by pressing the cutter to the optical fibers and pulling the same.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for inserting and fixing an end of an optical fiber into a base.
This invention relates to an optical fiber end face treatment device equipped with a cap that can improve the smoothness of the array end of the optical fibers at the end of the cap and improve the incident characteristics of light from the end. The present invention relates to a device for efficiently processing and hanging an optical fiber end face equipped with a base.

[Conventional technology]

The end of a sheet of multiple optical fibers, or the end of a bundle of multiple optical fibers is fixed with a base, and the base is placed opposite a light source, and the light is input into the optical fiber. It is necessary to smooth the end face of a light body in order to improve the amount of incident light and to ensure uniform light incidence.

Conventionally, the end face of an optical fiber inserted into a base has been manually formed using a knife or cutter, resulting in poor production efficiency and making it extremely difficult to mass-produce fibers with uniform smoothness.

A method of mechanizing the processing of the ends of optical fiber caps is also being considered. For example, after crimping and fixing a large number of optical fibers with a cap, a cutter is moved vertically along the end surface of the cap to cut off the excess optical fiber ends. At the same time, a method of forming a smooth optical fiber end face has been studied, but this method has not yet been put to practical use.

[Problem that the invention seeks to solve]

The end face of the optical fiber obtained by fixing a large number of optical fibers in a cap and cutting off the excess optical fiber from the cap by moving a cutter vertically along the end face of the cap and pressing it appears to have good smoothness at first glance. , because the cutter was pressed in the vertical direction, micro-destructions occurred at the core-clad interface on the optical fiber end face, resulting in poor light incidence efficiency on the end face, and a separate polishing operation was required to smooth the end face. was.

[Means for solving problems]

In view of the above-mentioned current situation, the inventors of the present invention have completed the present invention as a result of studies aimed at developing an optical fiber end-face processing device with a metal fitting that is free from such inconveniences.

The gist of the present invention is to provide a metal holder in which the end of an optical fiber is partially protruded from the end of the base, and one edge of the cutter moves in parallel along the end face of the metal while making an arc motion. The cutter holder fixing device is used to cut excess optical fibers, and both ends of the fixing device are connected to two supporting arms for moving the cutter of different lengths, and the shorter of the two supporting arms The other end of the supporting arm is the branch, and the longer supporting arm is 1
It has an inverted ''-shaped structure, the bent part of which is connected to the branch, and the other end connected to a part of the cylinder for driving the support arm.
Fig. 1 is a light with a cap, which is characterized in that the arms of the connecting part of the support arm of the book and the cutter fixture are attached parallel to each other and at an angle oblique to the vertical. 1 is a schematic diagram showing a configuration example of an optical fiber end cutting device with a cap, in which 1 is an optical fiber end protruding from the end of the cap, 2 is an optical fiber end fixing cap, and 3 is a cap holder for fixing the cap 2. , 4 is base 2
a cutter for cutting the protruding optical fiber end 1;
& is a cutter holder that supports the cutter, 5b is a cutter holder fixture that fixes the cutter holder 5a,
Both ends of the cutter holder fixture have the cutter blade surface oriented diagonally to the optical fiber axis with respect to the optical fiber end 1, and
The branch 5e of the support arm 5c, 5d is held by the support arms 5c, 5d so as to be able to abut and cut the optical fiber end without some rotational movement.

The other end of the support arm 5d is connected to a connecting point 6, which is connected to the shaft 7 of the cylinder 8.

Support arms 5 connected to both ends of cutter holder fixture 5a
In order to ensure the cutting of the optical fiber inserted into the base, the axis of C15d should be wide during its movement, and the blade surface of the cutter should move diagonally to the optical fiber axis and draw an arcuate trajectory. , it is important to arrange them so that they are parallel to each other and at an angle with respect to the perpendicular line.

In addition, the lengths of the supporting arms of the two trees are different; the shorter supporting arm 5c is linear, and the other supporting arm 5d is formed in the shape of an inverted dogleg, and its bending point is is connected to the fulcrum,
The other end is connected to the cylinder.

Further, it is preferable that the support arm 5d is bent relative to the support arm 5c so as to be able to move symmetrically to the right and left with respect to the perpendicular line around the fulcrum.
The connecting point 6 to the cylinder 8 can be moved horizontally without causing any major hindrance to the horizontal reciprocating movement of the shaft 7 of the cylinder 8, and this greatly contributes to the miniaturization of the device of the present invention.

Next, with reference to the figure, a procedure for smoothing the end of an optical fiber with a cap using the optical fiber end processing device with a cap of the present invention will be explained.

First, a plurality of optical fibers were inserted so that their ends protruded from the end surface of the cap, and were caulked and fixed so that the end surfaces of the cap matched with the cap holder 30. The cutter blade, two support arms, and the connecting point 6 of the cylinder shaft and support arm 54 are set to the NIC position as shown in FIG.
was moved in the direction of arrow B7, B, and the optical fiber protruding from the end of the base could be cut very easily. In addition, the cylinder axis only needed to be moved almost horizontally, and the operability was extremely good.

Since the cutter blade surface was moved parallel to the optical fiber axis in a direction diagonal to the axis of the optical fiber, it was possible to cut the excess portion of the optical fiber by pulling the cutter while pressing the cutter against the optical fiber.

When the end of the base of the obtained optical fiber was observed, it was found that the core-clad interface of the optical fiber was not broken at all, and the incidence of light from the end of the base was extremely good.

〔Effect of the invention〕

As detailed above, according to the present invention, the end of the optical fiber inserted so as to protrude from the base is cut at a certain angle with respect to the fiber axis, so a smooth end surface can be obtained with one cutting. , eliminating the need for polishing after cutting, processing process, 7
The effect is significant.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an example of the configuration of an optical fiber end processing apparatus with a metal fitting according to the present invention. DESCRIPTION OF SYMBOLS 1... Optical fiber end, 2... Optical fiber end fixing cap, 3... Cap holding part, 4... Cutter, 5a.
... Cutter holder, 5b... Cutter holder fixture, 5c, 5i... Support arm, 5θ, 5f... Support arm fulcrum, 6... Connection point, 7... Axis of cylinder,
8...Cylinder.

Claims (1)

[Claims] (1) A cap holder that fixes the end of the optical fiber so as to protrude, and the cutter blade side moves in parallel along the end surface of the cap with an arc motion to cut off the excess optical fiber. The cutter holder fixing device is provided with both ends of the fixing device connected to two supporting arms for moving the cutter of different lengths, and with the other end of the shorter of the two supporting arms serving as a fulcrum, One support arm has an "inverted"-shaped structure, and its bent part is connected to a fulcrum, and the other end is connected to a support arm driving cylinder part, and the cutter is fixed to the fulcrum of the two support arms. 1. An optical fiber end face processing device with a cap, characterized in that the arms connecting the coupling parts are attached so as to be parallel to each other and maintain an angle oblique to a perpendicular line.