JPS59199544A - Apparatus for automatic cutting of optical fiber - Google Patents

Abstract

PURPOSE:To perform the cutting of an optical fiber filament, in high efficiency, by applying a scratch to the surface of a spun optical fiber filament, swivelling a lever, and pressing near the free end of the filament with a press roll. CONSTITUTION:The length of a spun optical fiber filament 6 is metered, and an operating signal according to the metered value is transmitted to the solenoid 74 to forward the piston rod 72 furnished with the cutter edge 71 and press the cutter edge 71 toward the counter roll 83 supporting the optical fiber filament 6. A scratch is applied to the surface of the filament 6 by this procedure. At the same time, the head 75 of the piston rod 72 is forwarded to swivel the lever 77 at a definite angle around the axis P, and the fiber filament 6 is pressed with the press roll 78 at the surface near the free end of the filament. The filament 6 can be broken at the position scratched with the cutter edge 71.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to an automatic optical fiber cutting device.

[Technical use of the invention and its problems] Image kite for image transmission using optical fiber is
It is composed of a large number of optical fiber strands. The winding method, flaking method, multi-method, multi-multi method, etc. are generally known as methods for gathering fiber strands, but for image guide purposes, the multi-method, multi-multi method is recommended from the viewpoint of product quality. has become mainstream in recent years.

The multi-method involves arranging the required number of fiber strands in parallel and regularly, fusing them closely together at high temperatures, and then spinning them. The strands are arranged in a parallel and regular manner in the same manner as described above, brought into close contact with each other, fused again at high temperature, and spun.

Regardless of which method is adopted, it is necessary to make the Fuffiva wire to have a predetermined outer diameter and length. Conventionally, the outer diameter of the fiber strands was adjusted by a spinning device, but the length was manually measured and cut after spinning. Therefore, it took a lot of work and was inefficient.

[Object of the Invention] The present invention has been made based on the above-mentioned circumstances, and provides an automatic optical fiber cutting device that continuously and automatically cuts fibers during spinning operation in a spinning device for manufacturing fiber cables. The purpose is to provide the following.

[Summary of the Invention] That is, the present invention provides a movable piston rod that controls a cutter blade that creates a cut for cutting on the surface of a spun optical fiber, a means for moving the rod back and forth, and the like.
A support for supporting the wire provided opposite to the cutter blade is interlocked with the roll and the rod when the rod moves back and forth,
The method includes a lever that rotates at a certain angle around a fulcrum provided on an external member, and a push roll that is provided at the tip of the lever and applies an external force to the wire for cutting. This is an automatic cutting device for optical fibers.

[Embodiments of the invention] An embodiment of the present invention will be described below.

In FIG. 1, a mother IJ [1 and 2] is fed by a rod feeding device of a normal spinning device (not shown).
The fiber is heated to a high temperature in the heating furnace 3, its diameter is automatically measured by the outer diameter measuring device 4, and the take-up speed of the take-off device 5 is controlled by the feedback mechanism, so that the fiber has a predetermined outer diameter. 6 is spun.

The fiber strand 6 after spinning is measured to a predetermined length using a length counter (not shown) or the like. Then, the optical fiber is cut by the automatic fiber cutting ffl'i device 7 according to the present invention,
The cut fiber strand 6 falls naturally and is stored in the strand storage container 8 . The automatic cutting device 7 is configured as follows.

That is, the screw 1 to the slot 72 shown in FIG.
One end of the rod 72 is connected to a means for advancing and retracting the rod 72, such as a core of a solenoid 74.

Header part 75 of screw 1 to slot 72 (kokeko mouth)
A bottle 76 is provided which projects perpendicularly to the central axis of the lever 77.
It is engaged with a.

One end of the lever 77 is attached to an external member (not shown) of the automatic cutting device @7, and is configured to be rotatable around a fulcrum P by a certain angle. A push roll 78 for pressing the fiber strand 6 is provided near the free end of the lever 77 . That is, one end of the support shaft 79 of the roll 78 is configured to engage with the lower elongated hole 80 of the lever 77 and to fix it at an appropriate position.

The header portion 75 of the piston rod 72 is attached to the tip of the rod 72 by an adjustment nut 81 so as to be finely adjustable in the axial direction, and a coil spring 82 is interposed between the adjustment nut 81 and the bearing 73. be. Further, a roll 83 is provided opposite the cutter blade 71. It is something.

Next, the operation of the above device will be explained.

The fiber strand 6 is transferred to the take-off device 5h and I41.
A predetermined length is measured by a two-length counter or the like.

The operation command signal according to this δlR value is
Granted to 4.

The piston rod 72 has a diameter of < l” 74 b\
When IGIJIG, coil spring 82
(After this, the I3 is drawn toward the solenoid 74 side.
(For excitation, one element of the coil spring 82 is advanced, and 71 is received by the roll 83 +1llI
(This 1111 j, i') (gives scratches (q) on the surface of the fiber strand 6. This I4, the header part 75 of the piston rod 72 force 1'11i'r Accordingly, the repair 7 is rotated at a predetermined angle θ with the fulcrum P as the center of the bottle 76 (this angle θ is 6σ of the fiber wire), the length, the diameter of the fiber,
Determined by considering hardness etc.

In addition, the vertical direction σ of the push roll 78) (rZ position is also nG
Similarly to M, the length, jζ9) diameter, hardness, etc. of the fiber wire 6 are taken into account and adjusted as appropriate.

The rotation of the lever 77 pushes the surface near the free end of the push roll 78h' of the fiber strand 6, and the other end is pressed against the cutter blade 71 by the roll 83. , the fiber strand 6 is broken at the position of the cutter blade 71 that is damaged. In this case, the fiber cable 6 is
Because of its high rigidity, if there is a slight flaw, it can be easily cut by applying a minute external force to the fiber strand 6 using the push roll 78. The fiber strand 6 after cutting is allowed to fall naturally and is stored in the strand storage container 8 as described above.

Next, the above specific example will be explained.

[Specific example] When a quartz step index fiber cable wire with an outer diameter of φ2 mm is taken at a take-up speed of 3 m/min and this wire is cut into a length of 500 mm, the cyclic truncated value of the lever 77 is θ-15.
When it was set to 6, the cutting was extremely smooth and highly efficient work was possible.

[Effects of the Invention] As described above, the present invention automatically cuts the fiber strands after spinning into a predetermined length, eliminating the hassle of conventional manual work and improving work efficiency. It can be expected that cutting errors will occur again, and it is highly economical.

In addition, in the embodiment of the present invention, Bis I.
Although a solenoid is used as the means for advancing and retracting, it is of course not limited to this, and it is possible to replace it with other reciprocating mechanisms.

[Brief explanation of drawings]

FIG. 1 is a schematic view showing the installation position of an automatic optical fiber cutting device of the present invention, FIG. 2 is a detailed view of the automatic cutting device, FIG. 3 is a partially cutaway longitudinal sectional view thereof, and FIG. The figure is an explanatory view of the rotating state of the lever of the above device. 6... Fiber wire 7... Automatic cutting device 71.
... Cutter blade 72 ... Screw 1 - Rod 74 ...
・Solenoid 75...l\Footer 76...bin
77...Lever 78...Push roll 82...No change in the purification content on the four sides of the coil spring) / No. 3 Figure 11r (June 1, 1995, 1-1 Office Agency'f (r Waka) Kazuo Sugi
Tono 1 jn display Showa 57 special:! [Ganriki No. 227672 No. 2, Name of the invention: Optical fiber automatic cutting device 3, Relationship with the old case to be amended Patent applicant: 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki City Representative: Showa Electric Wire and Silk Co., Ltd. Yoshi Minoruhiko Yu 4, Agent 6, Subject of amendment Drawing 7, Contents of amendment The drawing will be amended as shown in the attached sheet.

Claims (2)

[Claims] (1) A reciprocatable piston rond having a J vine blade that is spun and has a J vine blade (which applies scratches for cutting on the surface of the optical fiber strand), a means for advancing and retracting the rond, and a piston rond facing the cutter blade. The provided support for supporting the strands includes a roll, and a lever that interlocks with the rod 1 when the rod advances and retreats and rotates at a constant angle around a fulcrum provided on an external member;
An automatic optical fiber cutting device characterized by having a push roll provided at the tip of the lever to apply an external force to the strand for cutting. (2) The automatic optical fiber cutting device according to claim 1, characterized in that the means for advancing and retracting the iron is performed by the magnetic action of a solenoid.