JP2008169077A - Method of winding optical fiber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of winding an optical fiber which enables to finish the winding in an excellent winding condition while preventing the occurrence of winding disorder of the optical fiber in the finishing of the winding. <P>SOLUTION: The method of winding the optical fiber is carried out by traversing a winding position 3a to the rotation axial direction of a bobbin 5 in the winding of the optical fiber 3 on the bobbin 5 and reversing the traverse direction at a prescribed position matched with the width of the drum part 5a of the bobbin 5. The position where the traverse direction is reversed is normally the prescribed position and when the rotation speed of the bobbin 5 is decreased to finish the winding, the position where the traverse direction is reversed is shifted to the front side of the position second from last time in every reverses. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to an optical fiber winding method in which an optical fiber is wound on a winding bobbin while being aligned in a stacked state.

  Up to now, as a winding method of a linear body such as an optical fiber, a driving mechanism for rotating and driving a winding bobbin having flanges on both sides of a body part that winds the linear body, and a wire to the winding bobbin By means of a device comprising a guide pulley for setting the winding position of the rod, a bobbin traverse mechanism for traversing the winding bobbin in its axial direction, and a traverse control circuit for controlling the traverse inversion position by this bobbin traverse mechanism, Various methods have been proposed for aligning and winding a cylindrical body on a take-up bobbin in a stacked state (for example, see Patent Document 1).

JP-A-5-310369

  By the way, when deceleration is started to stop the winding bobbin at the end of winding, the tension of the linear body becomes unstable, the winding state to the trunk becomes unstable, and the jaws whose traverse direction is reversed Winding disturbance may occur near the area. When the turbulence occurs, not only the appearance is impaired, but also the entanglement is likely to occur during feeding.

  An object of the present invention is to provide an optical fiber winding method capable of preventing the occurrence of winding disturbance of an optical fiber at the end of winding and completing winding in a good winding state.

  An optical fiber winding method according to the present invention that can solve the above-mentioned problems is that when winding an optical fiber around a bobbin, the winding position is traversed in the rotation axis direction of the bobbin, and the width of the bobbin body portion An optical fiber winding method for winding the optical fiber in layers by reversing the traverse direction at a predetermined position according to the above, wherein the position where the traverse direction is reversed is normally the predetermined position, and the winding is performed. When decelerating the rotation of the bobbin is started to complete the removal, the position is set to a position before the position of the previous reversal for each reversal.

  In the optical fiber winding method according to the present invention, the front position is preferably a position that is 1 mm or more in front.

  According to the optical fiber winding method of the present invention, it is possible to prevent turbulence of the optical fiber at the end of winding and complete winding in a good winding state.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an optical fiber winding method according to the present invention will be described in detail with reference to the drawings.
1 to 3 show one embodiment of an optical fiber winding method according to the present invention, FIG. 1 is a schematic configuration diagram of a winding device, and FIG. 2 shows winding speed and winding width showing the winding method. FIG. 3 is a schematic sectional view of a winding bobbin showing a winding state.

  A winding device 1 shown in FIG. 1 includes a rotation drive mechanism (not shown) that rotationally drives a winding bobbin 5 having flanges 5b and 5c on both sides of a cylindrical body 5a that winds an optical fiber 3. The guide pulley 7 for setting the winding position of the optical fiber 3 around the take-up bobbin 5, the dancer roller (not shown) provided at the front stage of the guide pulley 7 and the take-up bobbin 5 are traversed in the axial direction. A bobbin traverse mechanism 9 for reversing the traverse at a predetermined position in accordance with the width of the body 5a of the take-up bobbin 5 for each take-up layer of the optical fiber 3, and a control device for controlling the bobbin traverse mechanism 9 and the rotation drive mechanism 11.

  The dancer roller provided at the front stage of the guide pulley 7 is provided in a suspended state on the optical fiber 3 at the front stage of the guide pulley 7 and automatically adjusts the feeding amount of the optical fiber 3 by its own displacement. Fluctuations in the winding speed of the optical fiber 3 to the optical fiber 3 are prevented.

The take-up bobbin 5 can be reciprocated in a direction indicated by an arrow (A) in FIG. 1 by a bobbin traverse mechanism 9.
When the winding position of the optical fiber 3 on the body portion 5a of the winding bobbin 5 reaches a predetermined position at the flange portions 5b and 5c, the control device 11 issues a reverse instruction to the bobbin traverse mechanism 9. The traverse direction of the winding position in the winding bobbin 5 is reversed.

Whether or not the winding position has reached a predetermined position at the flange portions 5b and 5c of the winding bobbin 5 is determined by a pair of flange detection sensors 15 and 16 arranged with the pass line of the optical fiber 3 interposed therebetween. .
The wrinkle detection sensors 15 and 16 are both arranged away from the pass line of the optical fiber 3 by a distance S.
The jaw detection sensors 15 and 16 detect that the hooks 5b and 5c have reached the front of the hook detection sensors 15 and 16 from the reflection positions of the sensor lights 15a and 16a emitted toward the winding bobbin 5. .

  In the case of FIG. 1, the jaw detection sensor 16 detects that the collar portion 5 c of the winding bobbin 5 has reached the front of the jaw detection sensor 16. At this time, the winding position of the optical fiber 3 is at a position away from the center of the trunk portion 5a in the axial direction by a distance S from the flange portion 5c. That is, if the winding bobbin 5 is further traversed by the distance S after the hook detection sensor 16 detects the inner end of the hook part 5c, the winding position of the optical fiber 3 reaches the point of the hook part 5c. It will be done. Therefore, after the hook detection sensor 16 detects the inner end of the hook part 5c, the inner end position of the hook part 5c is further traversed in the same direction by the distance S, and then traverse inversion is performed. 3 is folded at the time of the collar part 5c, and this time is aligned and wound toward the collar part 5b.

Next, a case where the optical fiber 3 is wound around the winding bobbin 5 by the winding device 1 will be described.
When winding is started, the control device 11 starts rotation of the winding bobbin 5 by the rotation drive mechanism.
As a result, as shown in FIG. 2, the winding speed corresponding to the rotational speed of the winding bobbin 5 is increased, and the optical fiber 3 is wound around the body 5a of the winding bobbin 5 at a predetermined winding speed V. .

  Here, an example of the optical fiber 3 has an outer diameter of about 250 μm. The optical fiber 3 is fed at a linear speed of about 1 to 3 km / min and wound at a pitch of about 400 to 500 μm. The take-up bobbin 5 is wound around the trunk 5a.

At this time, the control device 11 determines that the winding position of the optical fiber 3 on the trunk portion 5a of the winding bobbin 5 is the flange portions 5b and 5c based on the detection signals from the jaw detection sensors 15 and 16. When reaching a predetermined position, the bobbin traverse mechanism 9 is instructed to reverse, and the traverse direction of the take-up bobbin 5 is reversed.
Thus, normally, as shown in FIG. 2, the optical fiber 3 is wound around the take-up bobbin 5 with a predetermined take-up width W whose inversion position is a predetermined position when the jaws 5b and 5c are located. Taken.

  Thereafter, the winding of the optical fiber 3 on the winding bobbin 5 is almost completed, and the controller 11 turns off the drive motor of the rotary drive mechanism in order to finish the winding of the optical fiber 3 by the winding bobbin 5. . As a result, the take-up bobbin 5 is decelerated from this point in time and then stops.

Here, after the deceleration start time T of the winding bobbin 5, the control device 11 controls the bobbin traverse mechanism 9 so that the traverse reversal position of the winding bobbin 5 is at least 1 mm before the previous reversal position. Perform end processing for the position. That is, it is displaced to the axial center side of the trunk portion 5a with respect to the previous reversing position on the flange portion 5b side, and is displaced to the axial center side of the trunk portion 5a with respect to the previous reversing position on the flange portion 5c side. Let In addition, it is preferable to set it as about 1-10 mm as a displacement amount of an inversion position. If the displacement amount at the reversal position is less than 1 mm, the roll is likely to collapse after winding. If the displacement amount at the reversal position is greater than 10 mm, the winding length in one traverse is shortened accordingly. The traverse reversal number of the winding bobbin 5 increases.
As a result, the winding position 3a of the optical fiber 3 in the winding bobbin 5 is gradually separated from the jaws 5b and 5c in several layers on the outer peripheral side, as shown in FIGS. The cutting width is gradually reduced.

  Thus, according to the above embodiment, since the traverse direction of the winding position is reversed at a position before the previous reversal position from when the deceleration is started to stop the rotation of the winding bobbin 5, the reversal is performed. The position can be separated from the vicinity of the jaws 5b and 5c. As a result, even if the winding state around the body portion 5a becomes unstable due to the instability of the tension of the optical fiber 3 due to the deceleration of the winding bobbin 5, the winding is likely to occur near the jaw portions 5b and 5c. Tangle can be suppressed, and winding can be completed with a good winding state and a good appearance.

And this winding method is suitable especially when winding the optical fiber 3 which raises tension | tensile_strength from causing breakage and damage.
Further, the reverse position in the traverse direction of the winding position after the start of the deceleration of the rotation of the winding bobbin 5 is shifted to the near side from the previous reverse position, thereby preventing the collapse at the reverse position in each layer. And a further good winding state can be obtained.

  It should be noted that the timing at which the traverse reversal position of the take-up bobbin 5 is displaced to the front may be slightly before and after the deceleration start time T of the take-up bobbin 5, and the reversal position is brought forward before the deceleration start time T. By displacing, it is possible to reliably cope with the tension before it becomes unstable due to deceleration.

It is a schematic block diagram of the winding apparatus which can apply the winding method of this embodiment. It is a graph which shows the winding speed and winding width explaining the winding method of this embodiment. It is a schematic sectional drawing of the winding bobbin which shows a winding state.

Explanation of symbols

3 Optical fiber 3a Winding position 5 Winding bobbin 5a Body part 5b, 5c Jaw part W Winding width

Claims (2)

When winding the optical fiber around the bobbin, the winding position is traversed in the bobbin rotation axis direction, and the optical fiber is layered by reversing the traverse direction at a predetermined position according to the width of the bobbin body. An optical fiber winding method for winding,
The position for reversing the traverse direction is normally the predetermined position, and when starting to decelerate the rotation of the bobbin for the end of winding, the position before the reversal position is set to be a position before the reversal every time it is reversed. A method for winding an optical fiber.   The optical fiber winding method according to claim 1, wherein the front position is a position that is 1 mm or more in front.

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