JPS63192005A - Core supply device for optical fiber - Google Patents

Abstract

PURPOSE:To simplify the structure and to miniaturize the device by mechanically interlocking movement and opening/closing of upper and lower rolls with the motion of a core moving arm. CONSTITUTION:When a core moving arm 76 is moved backward, a contact rod 82 is pushed and the contact rod 82 pushes a projection 50 to move a slide base 20 backward. A cam block 28 falls by the force of a tension spring 42, and the space between upper and lower rolls 34 and 36 is closed to catch one core 56 between them. The lower roll 36 is rotated to feed the core 56, and the core 56 is grasped with a core chuck 78 after the length of the core 56 is determined as fixed dimensions, and the core moving arm 76 is moved forward, and then, the slide base 20 is automatically moved forward by the action of a tension sprig 48, and the space between upper and lower rolls 34 and 36 is opened. Hereafter, this operation is repeated. Thus, the number of motors is reduced to simplify the structure.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] In order to automatically and continuously connect optical fibers, it is necessary to automatically and continuously supply optical fibers.

The present invention relates to an automatic optical fiber supply device for this purpose.

[Prior Art] Although not an optical fiber core wire, there is a type of automatic feeding device for general wire rods.

As shown in FIG. 8a, there is a cassette 90 holding a large number of wire rods 92 and a feed roller 94.

First, the feed roller 94 is moved to the right (FIG. 8b), then the space between the feed rollers 94 is closed (FIG. 8C), and the feed roller 94 is rotated to feed the wire 92 and sandwich it between the chucks 96.

When one wire rod 92 is fed out, the space between the feed rollers 94 is opened, the rollers 94 are returned to the original position t (the state shown in FIG. 8a), and the cassette 90 is moved intermittently by the distance between the wire rods 92.

Repeat this below.

[Problems to be Solved by the Invention] In the above case, the feed roller 94: ■ Movement, ■ Opening/closing, ■
Each requires a motor to rotate.

As the number of motors increases, the structure becomes more complex and the device becomes larger. This is disadvantageous when connecting optical fibers with short extra length or when working in narrow spaces.

Note that there are cases where the cassette 90 is moved instead of the feed roller 94, but the same problem occurs.

[Means for solving problems] This invention applies to the above case as an example.

The above problem is solved by linking the movement and opening/closing of the feed roller 94 with the movement of the chuck 96, etc., thereby eliminating the need for a dedicated motor.

(1) The fiber moving arm 76 of the fiber moving unit 70 of the optical fiber fusion splicer is provided so that the fiber moving arm 76 can be moved back and forth, and the fiber chuck 78 is attached to it. At the rear, slide the slide stand 20 of the core wire supply unit IO into the
(2) The slide table 20 is provided so that it can move a certain distance back and forth and is always urged forward.

■When the core wire moving arm 76 moves backward.

(2) When the fiber moving arm 76 moves forward, it should automatically return to the forward position; (3) It should be integrally mounted on the slide base 20; The lower roller 36 is attached to the lower roller mounting base 22, the cam block 28 is provided so as to be movable in the vertical direction with respect to the lower roller mounting base 22, and the freely rotating upper roller 34 is placed in a position opposite to the lower roller 36. (4) When the slide base 20 is located forward,
When the cam block 28 is in the raised position, the upper and lower rollers 34
．． 36 rooms open.

When the slide base 20 is located at the rear, the cam block 2
8 is in the lowered position so that the space between the upper and lower rollers 34, 36 is closed, (5) a cassette 52 that holds a large number of core wires 56 is provided behind the upper and lower rollers 34, 36, as described above. When the upper and lower rollers 34 and 36 are closed, one core wire 56 is sandwiched between them.

[Example] As shown in figure f51, this invention's ? ci! ! t consists of a core wire supply section 10 and a core wire moving section 70.

First, the core wire supply unit IO will be explained.

In FIG. 2, only the core wire supply section 10 is shown.

For convenience of explanation, the front, rear, left and right directions are defined as arrows 12.

14 is the base. A bar 18 is supported by support plates 16 standing up on both right and left ends of the front and rear parts, and a slide table 20 is attached to it so as to be movable back and forth.

A square block-shaped lower roller mounting base 22 is provided, for example, at the right end of the slide base 20, and furthermore, a thick plate-shaped upper roller mounting base 24 is erected thereon.

A cam block 28 is attached to the upper roller mounting base 24 via a slide bearing 26 so as to be movable up and down. A protruding part 30 is made to protrude in front of the cam block 28, and a slope 32 is formed on the lower surface of the protruding part 30 (FIG. 1).

A freely rotating upper roller 34 is attached to the cam block 28.

Further, a lower roller 36 is provided at a position facing the upper roller 34. The shaft 38 of the lower roller 36 is attached to the lower roller mounting base 2
2 and rotated by a bracket motor 40.

A tension spring 42 is provided between the lower roller mounting base 22 and the cam block 28 to constantly urge the cam block 28 downward.

A boss 44 is placed upright at the front of the slide table 20, and a roller 46 provided at the tip thereof is connected to the slope 3 of the cam block 28.
2.

As shown in FIG. ff11, when the slide base 20 is in the forward position, the cam block 28 is pushed by the rollers 46 and rises, opening the space between the upper and lower rollers 34 and 36.

When the slide base 20 retreats, the cam block 28 is lowered by the force of the tension spring 42, and the space between the upper and lower rollers 34 and 36 is closed.

Further, a tension spring 48 is provided between the lower roller mounting base 22 and the post 44 to always urge the slide base 20 forward.

A protrusion 50 is provided on the front surface of the slide table 20. Its role will be explained later.

A cassette 52 is provided behind the upper and lower rollers 34, 36.

The cores tlj 56 are held in the holes 54 of the cassette 52 at regular intervals.

The motor 57 causes the pinion 58 . The cassette 52 is intermittently raised at intervals of the core wires 56 via the rack 60.

Next, tax will be deducted for the core wire moving unit 70 (FIG. 1).

This forms part of an optical fiber fusion splicer.

There are support plates 72 at the front and rear, and a bar 74 passed between them supports the core wire moving arm 76 so as to be movable back and forth. The core wire moving arm 76 is in a mating relationship with the screw 80,
By rotating the screw 80, it moves back and forth.

A contact rod 82 is attached to the rear support plate 72 so as to be slidable in one front-rear direction and not to come off.

[Function] (1) Several to several dozen core wires 56 are set in the cassette 52.

(2) Raise the cassette 52 and align one core wire 56 with the height of the upper and lower rollers 34, 36 (FIG. 3).

(3) Retract the core wire moving arm 76. Then, the core wire moving arm 76 pushes the contact rod 82, the contact rod 82 pushes the protrusion 50, and the slide base 2
Retract 0.

Then, as described above, the upper and lower rollers 34 and 36 close, sandwiching one core wire 56 (FIG. 1).

(4) Next, rotate the lower roller 36 and feed the core wire 56.

At this time, the cord chuck 78 is opened by the gap through which the cord 56 passes (FIG. 5).

(5) As shown in FIG. 6, the core wire 56 is determined to have a predetermined length by the sensor 84, and then gripped by the core wire chuck 78.

(6) Next, move the core wire moving arm 76 forward. Then, the slide table 20 automatically moves forward under the action of the tension spring 48, and the upper and lower rollers 34 and 36 open as described above (
Figure 7).

The above operation is then repeated.

(7) Note that if the connection fails and you want to try the same optical fiber again, proceed from (3) above.

(8) Furthermore, when discharging the core wire 56 that has failed in connection, it is sufficient to proceed from the above (3) and then reversely rotate the lower roller 36 in the next step (4).

(9) Note that the fiber moving member 76 of the fiber moving unit 70 and the fiber supply unit 10 are mechanically connected only by the contact rod 82, so if necessary, Part 10
can be easily attached and detached.

[Effects of the invention] (1) Upper roller 34. By mechanically interlocking the movement and opening/closing of the lower roller 36 with the movement of the core wire moving arm 76, the number of motors can be reduced. Therefore, it is possible to simplify the structure and downsize the device. This is advantageous when connecting optical fibers with short extra length and when working in narrow spaces.

(2) As mentioned above, if the connection fails, the fiber moving arm 76 is moved backward, the fiber chuck 7B is opened, and the upper roller 34. Since the core wire 56 can be moved in and out freely by the lower roller 36, it can be repeated as many times as there is extra length.

[Brief explanation of the drawing]

1 to 7 relate to an embodiment of the present invention, in which FIG. 1 is a front view, FIG. 2 is a perspective view of the core wire supply section 10, FIG. 3, FIG. 1, FIG. 5, and FIG. Figure, Figure 7 is the heart jl!
Explanatory diagram showing the supply operation of a56 in the order of steps. FIG. 8a, FIG. 8b, and FIG. 8C are explanatory diagrams showing the conventional feeding operation of wire rod 92 in the order of steps. lO: Core wire supply m 14: Base 16: Support plate 18: Bar 20 Ni slide stand 22: Lower roller mounting stand 24: Upper roller mounting stand 26: Slide bearing 28: Cam block 30: Projection part 32: Slope 34: Upper Roller 36: Lower roller 38: Axis 40: Motor 42: Tension spring 44: Bost
46: Roller 48 two tension springs 50: Protrusion 52: Cassette 54: Hole 56 core wire 57: Motor 58: Pinion 60 Neck 70: Core wire moving part 72: Support plate 74: Bar 76: Core wire moving arm 782 Core wire chuck 80: Screw 82; Contact rod 84 sensor 90: Cassette 92: Wire rod 94: Feed roller 96: Chuck

Claims (2)

[Claims] (1) Wire movement of the fiber moving part (70) of an optical fiber fusion splicer, which is provided with a fiber moving arm (76) that can be moved back and forth and a fiber chuck (78) attached thereto. At the rear of the arm (76), there is a core wire supply section (10).
The slide table (20) is provided so that it can move a certain distance back and forth and is always urged forward, and when the fiber moving arm (76) moves rearward, the slide table (20) 20) moves rearward, and the fiber moving arm (
When the slide stand (76) moves forward, the slide stand (20) automatically returns to the forward position, and the slide stand (20) moves forward.
) Attach the lower roller (36) to the lower roller mounting base (22), which is integrally mounted on the lower roller mounting base (22).
), a cam block (28) is provided so as to be movable in the vertical direction, a freely rotating upper roller (34) is provided in a position facing the lower roller (36), and the slide base (20) is moved forward. When located, the cam block (28)
is in the raised position, the upper and lower rollers (34) and (36) are opened, and the slide base (20) is located at the rear, the cam block (28) is in the lowered position, and the upper and lower rollers (36) are in the lower position.
34) and (36), and then press the upper and lower rollers (3
A cassette (52) that holds a large number of core wires (56) is provided behind 4) and (36), and the upper and lower rollers (
34) An optical fiber core supply device, characterized in that when the space between (34) and (36) is closed, one core wire (56) is sandwiched between them. (2) A contact rod (82) is provided on the support plate (72) of the core wire moving unit (70) so as to be slidable in the front-rear direction,
When the fiber moving arm (76) moves backward, the fiber moving arm (76) pushes the contact rod (82) backward, and the contact rod (82) moves toward the fiber supply section (1).
The optical fiber core supply device according to claim 1, characterized in that the slide table (20) of item 0) is moved by pushing backward.