JP2714032B2 - Optical fiber feeding device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber feeding device for feeding an optical fiber wound on a bobbin.

"Conventional technology" Conventionally, as an optical fiber feeding device of this kind,
The one shown in FIGS. 3 and 4 is known.

In the figure, reference numeral 1 denotes a base, on which a movable table 2 is supported so as to be able to reciprocate in the direction of the arrow in FIG. The rotation or the reverse rotation is transmitted to the feed shaft 5 by the belt 4 and is reciprocated (traverse movement) by the screw mechanism. Here, the traverse motor 3, the belt 4, and the feed shaft 5 constitute a reciprocating mechanism K. A bobbin 6 is mounted on the movable table 2 via a belt 7 so that the bobbin 6 is rotatable around the axis with its axis parallel to the moving direction of the movable table 2. The motor 8 is adapted to be rotated. That is, the motor 8 and the belt 7 constitute a rotation mechanism for rotating the bobbin 6. An optical fiber S is wound around the outer periphery of the bobbin 6 in multiple layers in an aligned state. The optical fiber S is wound around a winding bobbin (not shown) through a guide roll 9.

On the payout side of the optical fiber S in the vicinity of the bobbin 6, two proximity switches 10 are arranged at a predetermined interval along the axis of the bobbin 6.
A swing guide roll 11 is provided between the guide roll 9 and the guide roll 9 side.
Are arranged.

The swing guide roll 11 is rotatably supported by a support member 13 which is rotatable in a horizontal direction by a bearing 12. Optical fiber S unreeled from bobbin 6
Is arranged to reach the guide roll 9 through the swing guide roll 11. The swing guide roll 11 is installed at a position where the optical fiber S is slightly pushed upward by the tangential position of the swing guide roll 11. As a result, the swinging guide roll 11 receives the tension of the optical fiber S, and by this tension, when the optical fiber S moves laterally due to a change in the unwinding position, it follows the movement and moves in the horizontal direction around the bearing 12. It turns (swings). When the swing guide roll 11 swings, the tip 13a of the support member 13 approaches the proximity switches 10, 10. The proximity switch 10 includes a support member 13
Is detected when it approaches the proximity switch 10, and a detection signal is output to the control unit 14. Control unit 14
Receives a detection signal from the proximity switch 10 and outputs a motor control signal for rotating the traverse motor 3 to move the bobbin 6 to the other proximity switch 10 side.

 Next, the operation of such a feeding device will be described.

When the motor 8 is operated to rotate the bobbin 6, the optical fiber S is paid out from the bobbin 6 while changing the payout position, and is taken up on a winding bobbin (not shown) through the swing guide roll 11 and the guide roll 9. It is being done. At this time, the unwinding position of the optical fiber S moves downward in FIG. 3, and the swinging guide roll 11 swings counterclockwise with the change of the unwinding position, as shown by a chain line in the figure. When the tip 13a of the support member 13 approaches the proximity switch 10 below, the proximity switch 10 outputs a detection signal to the control unit 14. Upon receiving this detection signal, the control unit 14 rotates the traverse motor 3 so as to move the bobbin 6 toward the other (upper) proximity switch 10 and moves the bobbin 6 upward. Conversely, when the feeding position of the optical fiber S moves upward, the swing guide roll 11 swings clockwise with the change of the feeding position. When the tip 13a of the support member 13 approaches the upper proximity switch 10, the proximity switch 10 outputs a detection signal to the controller 14. When the controller 14 receives this detection signal, the other (lower) The traverse motor 3 is rotated so as to move the bobbin 6 to the proximity switch 10 side, thereby moving the bobbin 6 downward.

"Problems to be solved by the invention" However, in such a feeding device,
With the change of the feeding position of the optical fiber S, the supporting member 13 is changed.
It is necessary to apply a lateral pressure to the optical fiber S by pushing up the optical fiber S in order to horizontally rotate the optical fiber S. Therefore, even if an excessive bending force is applied to the optical fiber S, its quality may be impaired.

Further, the bearing 12 is used to make the rotation of the support member 13 smooth. However, if the rotation of the bearing 12 becomes heavy due to dust or the like, excessive tension is applied to the optical fiber S, There was a risk of quality loss.

In particular, in the case of an optical fiber, there is a risk that distortion occurs due to the above-mentioned lateral pressure and excessive tension, the characteristics thereof are deteriorated, and a defective product is produced.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to feed out an optical fiber that can feed out an optical fiber without applying a side pressure to the optical fiber and without applying excessive tension. It is to provide a device.

Means for Solving the Problems In order to achieve the above object, an optical fiber payout apparatus according to the present invention is provided so that an axis is set along a moving table reciprocated by a reciprocating mechanism in a moving direction of the moving table. A bobbin to be positioned and a rotating mechanism for rotating the bobbin. The optical fiber wound around the bobbin in multiple layers in an aligned state around the bobbin while rotating the bobbin by the rotating mechanism. An optical fiber feeding device that feeds out an optical fiber in a direction perpendicular to the axis of the optical fiber.The optical fiber feeding device is disposed on the feeding side of the optical fiber at intervals along the axis of the bobbin, and directly detects the optical fiber when the optical fiber traverses. Non-contact type sensor that outputs a detection signal by performing a reciprocating movement when the detection signal of one of the non-contact type sensors is input. And controls the structure in which characterized in that a control unit for moving the bobbin to the other non-contact sensor side.

[Operation] In the optical fiber feeding device of the present invention, when the optical fiber crosses one of the non-contact sensors, the non-contact sensor outputs a detection signal to the control unit. When receiving the detection signal, the control unit controls the reciprocating mechanism to move the bobbin to the other non-contact type sensor. In this case, if the optical fiber traverses the non-contact type sensor, the non-contact type sensor directly detects this optical fiber and outputs a detection signal, so that the optical fiber is not subjected to side pressure and excessive tension is applied. No fear. Therefore,
The optical fiber does not impair its quality.

"Embodiment" An embodiment of the optical fiber feeding device of the present invention will be described below with reference to FIG. 1 and FIG.

In these figures, the same components as those shown in FIGS. 3 and 4 are denoted by the same reference numerals, and description thereof will be omitted.

Reference numerals 20 and 20 in the figure denote photoelectric sensors (non-contact type sensors), which are installed at predetermined intervals along the axis of the bobbin 6 on the payout side of the optical fiber S near the bobbin 6. . The photoelectric sensor 20 forms an optical path in the vertical direction. When the optical fiber S crosses the optical path and blocks light, it outputs a detection signal to the control unit 21. When receiving the detection signal, the control section 21 outputs a motor control signal for rotating the traverse motor 3 so as to move the bobbin 6 to the other photoelectric sensor 20 side. Reference numerals 22 and 22 denote cylindrical rollers for preventing overrun of the optical fiber S. These rollers 22 and 22 are closer to the guide roll 9 than the photoelectric sensors 20 and 20 and are located on the axis of the bobbin 6. Along and photoelectric sensor
They are installed at intervals greater than 20,20.

Next, the operation of the thus configured optical fiber feeding device will be described. When the motor 8 is operated and the bobbin 6 is rotated, the optical fiber S is changed while changing the feeding device.
Is fed out of the bobbin 6, and is wound on a winding bobbin (not shown) through a guide roll 9. At this time, when the optical fiber feeding device moves downward in FIG. 1 and the optical fiber S crosses the optical path of the photoelectric sensor 20 below and blocks the light, the photoelectric sensor 20 controls the detection signal by the control unit. Output to 21. Upon receiving this detection signal, the control unit 21 rotates the traverse motor 3 so as to move the bobbin 6 toward the other (upper) photoelectric sensor 20, and moves the bobbin 6 upward. Conversely, when the optical fiber feeding device moves upward and the optical fiber S crosses the optical path of the upper photoelectric sensor 20 and blocks light, the photoelectric sensor 20 outputs a detection signal to the control unit 21, Control unit
Upon receiving this detection signal, the motor 21 rotates the traverse motor 3 so as to move the bobbin 6 toward the other (lower) photoelectric sensor 20, and moves the bobbin 6 downward.

In such an optical fiber feeding device, if the optical fiber S traverses the photoelectric sensor 20, then
Since the photoelectric sensor 20 outputs a detection signal, the bobbin 6 can be moved without applying a side pressure to the optical fiber S and without fear of applying an excessive tension. Therefore, the feeding can be performed without deteriorating the quality of the optical fiber S.

In the above embodiment, the photoelectric sensor 20 is used.
However, the present invention is not limited to this. For example, a non-contact sensor such as an ultrasonic sensor or a magnetic sensor may be used.

[Effect of the Invention] As described above, in the optical fiber feeding device of the present invention, if the optical fiber traverses the non-contact type sensor, the non-contact type center directly detects the optical fiber and detects the detection signal. Is output to the control unit, so that the optical fiber can be paid out without applying a lateral pressure to the optical fiber and without fear of applying an excessive tension as in the related art. Therefore, the quality of the optical fiber is not impaired.

Further, since the moving table is provided with a bobbin and a rotating mechanism for rotating the bobbin, the rotating mechanism also moves integrally with the bobbin when the bobbin is moved by the reciprocating moving mechanism. As compared with the case where the device is provided at a different place, the number of parts is reduced, and the structure can be simplified.

[Brief description of the drawings]

1 and 2 are views showing an embodiment of an optical fiber feeding device according to the present invention. FIG. 1 is a plan view, and FIG. 2 is a side view of a main part. 3 and 4 are views showing a conventional optical fiber feeding device. FIG. 3 is a plan view, and FIG. 4 is a side view of a main part. S: optical fiber 6: bobbin K: reciprocating mechanism, 20: photoelectric sensor (non-contact type sensor) 21: control unit

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-137241 (JP, U) JP-B-63-29615 (JP, B2) JP-B-62-2199 (JP, Y2)

Claims (1)

(57) [Claims] A bobbin positioned along an axis in a moving direction of the moving table and a rotating mechanism for rotating the bobbin are provided on a moving table reciprocated by a reciprocating mechanism, and the rotating mechanism is provided. An optical fiber feeding device for feeding an optical fiber wound in multiple layers around the bobbin in an aligned state while rotating the bobbin in a direction orthogonal to the axis of the bobbin. Two non-contact type sensors disposed on the payout side at intervals along the axis of the bobbin, and which directly detects the optical fiber when the optical fiber traverses and outputs a detection signal; When the detection signal of one of the non-contact sensors is input, the reciprocating mechanism is controlled to move the bobbin to the other non-contact sensor. Feeding device for an optical fiber, characterized in that a controller is provided that.