JPH07111495B2 - Spacer type optical communication cable manufacturing equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a spacer type optical communication cable manufacturing apparatus for manufacturing an optical fiber cable by inserting an optical fiber into a spiral grooved spacer using a rotating cage, and in particular, The present invention relates to a spacer type optical communication cable manufacturing apparatus which detects a deviation between a spiral groove pitch of a spiral grooved spacer and a rotation pitch of a rotating cage to control twisting of the spiral grooved spacer.

[Conventional technology]

As a conventional spacer type optical communication cable manufacturing apparatus, for example, optical fiber communication is performed by inserting an optical fiber core wire 3 into a spacer 1 with a spiral groove (Fig. 4 (a)) using a rotating cage (not shown). Some manufacture cables. In this manufacturing apparatus, the rotation pitch of the rotating cage and the pitch of the spiral groove 1a of the spiral grooved spacer 1 do not always match, or the spiral groove pitch actually has some fluctuation in the longitudinal direction. When a deviation occurs between the rotation pitch of the rotating cage and the spiral groove pitch of the spacer with a spiral groove, the deviation is detected and the rotation speed of the rotation cage or the take-up speed of the cable pulling machine is controlled. For example, when the pitch of the spiral groove of the spacer with spiral groove is short, in other words, FIG. 4 (b)
As shown in, when the phase of the spiral groove 1a is advanced by the angle θ, the take-up speed of the spacer with spiral groove 1 is slowed,
Alternatively, the deviation is eliminated by speeding up the rotation gauge.

[Problems to be solved by the invention]

However, according to the conventional spacer type optical communication cable manufacturing apparatus, the rotational cage of the rotating cage or the cable take-up speed of the cable take-up machine is controlled in order to correct the pitch deviation by controlling the rotary cage or the cable take-up machine with a large inertial force. There is a disadvantage that a large amount of control torque is required to change the torque, and therefore it is necessary to increase the capacity of the torque transmission shaft of the entire apparatus or the transmission system such as gears and belts. In addition, since it is impossible to control a sudden deviation that has a limit in correcting the deviation of the pitch, it is necessary to suppress the rotation pitch of the rotating cage or the take-up speed of the take-up machine to some extent to improve productivity. I had a problem with.

[Means for solving problems]

The present invention has been made in view of the above, and in order to improve the productivity without increasing the capacity of the torque transmission system and capable of responding to a drastic pitch deviation, an optical fiber core wire is provided. Install a twisting machine that twists the spiral groove spacer in the vicinity of the collecting part that accommodates the spiral groove spacer, and control the twist angle of the spiral groove spacer according to the pitch deviation to prevent the pitch deviation. The present invention provides an apparatus for manufacturing a spacer type optical communication cable which is adapted to be corrected.

That is, the manufacturing apparatus of the spacer type optical communication cable according to the present invention comprises a detecting means for detecting a phase difference between the phase of the spiral groove of the spacer with the spiral groove and the rotation phase of the rotary gauge, and the spacer with the spiral groove. And a control means for controlling the amount of twist of the twisting means based on the phase difference of the detecting means.

Hereinafter, the manufacturing apparatus of the spacer type optical communication cable of the present invention will be described in detail.

〔Example〕

FIG. 1 shows an embodiment of the present invention, in which a spacer feeding drum 2 for feeding a spacer 1 with a spiral groove, a hobbin 4 for feeding an optical fiber core wire 3, and a spiral groove pitch of a spacer 1 with a spiral groove provided with a hobbin 4. A rotating cage 5 which rotates at a suitable constant speed, and a projection eye plate 6 which rotates according to a spiral groove pitch and guides and collects the optical fiber core wire 3 into the spiral groove.
And a helix installed near the potentiometer 7 and the potentiometer 6 which outputs a signal V ₈ corresponding to the deviation (phase difference) between the spiral groove pitch and the rotational pitch of the rotary gauge, which is connected to the convex eye plate 6. A twisting machine 8 for twisting the grooved spacer, a control section 9 for controlling the twisting machine 8 based on the signal V _{8 from the} potentiometer 7, a phase difference θ based on the signal V ₈ and a variation d thereof. Calculation unit 11 that calculates ₈ / d _t and calculation result θ and d ₈ / d _t
The twisting machine drive section 12 controlled by the control section 9 based on
a, a take-up machine drive unit 12b and a rotary cage drive unit 12c, and a take-up capstan 13 for taking out the spacer 1 with a spiral groove.

2 (a) and 2 (b) are enlarged views showing the projection eye plate 6 having the potentiometer 7. FIG. As shown,
The projection eye plate 6 has a projection 6a to be inserted into the spiral groove of the spiral grooved spacer 1, a fiber passage hole 6b for guiding the optical fiber core wire 3 to the spiral grooved spacer 1 and a gear 6c formed on the outer periphery thereof. It is provided and is rotatably attached to the collecting plate 10 by a bearing 10a. The collecting plate 10 rotates in the same manner as the rotating cage 5 and supports the gear 7a which is rotated by the gear 6c by the bearing 10b so as to revolve. The signal V ₈ corresponding to the rotation speed of the gear 7a is a potentiometer. It is output from 7.

The operation of the above configuration will be described. The spiral grooved spacer 1 delivered from the spacer delivery drum 2 passes through the center of the rotating cage 5 and is sent to the projection-provided eye plate 6. on the other hand,
The optical fiber core wire 3 is paid out from the bobbin 4 in the rotating cage 5 and sent to the projection eye plate 6. At this time, the rotating cage 5
Is the optical fiber, the core wire 3 is the spiral groove of the spacer 1 with the spiral groove.
To be surely accommodated along 1a, in other words, the third
As shown in the figure, the pitch of the spiral groove 1a and the take-up capstan
It rotates at a speed corresponding to the take-up speed of 13. The potentiometer 7 is rotated by the gear 6a of the projection eye plate 6 which rotates at a speed corresponding to the pitch of the spiral groove 1a of the spacer 1 and the take-up speed of the spacer 1, and is revolved by the rotation of the collecting plate 10. in response to rotation of the gear 7a outputs a rotation gauge 5 and the signal V ₈ in accordance with the deviation of the pitch of the spiral groove 1a of the spacer 1. The control unit 9 causes the calculation unit 11 to perform a predetermined calculation based on the signal V ₈ . In this calculation, the phase difference θ between the phase of the spiral groove 1a and the rotation phase of the rotation cage 5,
The change amount d ₈ / d _{t of the} phase difference θ is calculated and output to the control unit 9. The control unit 9 controls the twisting machine driving unit 12a to control the twisting machine 8a.
Is driven to twist the spiral grooved spacer 1 in accordance with the phase difference θ. FIG. 3 (a) shows a state where the twisting machine 8 does not twist the spiral grooved spacer 1 because there is no pitch deviation, and FIG. 3 (b) shows the twisting machine 8 depending on the phase difference θ. The state where the spiral grooved spacer 1 is twisted by an angle θ is shown. The twisting direction is clockwise or counterclockwise depending on whether the phase difference θ is advanced or delayed.

In the present embodiment, the pitch deviation is corrected by twisting the spacer 1 with a spiral groove. However, when the phase difference θ is differentiated with respect to time t, and there is a sharp deviation, that is, d ₈ / d _t is predetermined. Only when it exceeds the level of
When there is a slight deviation, that is, when d ₈ / d _t is below a predetermined level, the take-up machine drive unit 12b or the rotary cage drive unit 1c is controlled to increase or decrease the rotational speed of the rotary cage 5 or the take-up speed of the take-up machine. It is also possible to use the same method together.

[Effects of the Invention] As described above, according to the spacer type optical communication cable manufacturing apparatus of the present invention, a spiral grooved spacer is provided by providing a twisting machine that is smaller and lighter in weight and smaller in inertia than a rotating cage or a take-up machine. By twisting, the gap between the spiral groove pitch of the spiral grooved spacer and the rotation pitch of the rotating cage is corrected by controlling the amount of twist of this twisting machine, so it is possible to deal with sudden pitch deviations etc. Therefore, the take-up speed can be improved and the productivity can be improved. Further, since it is only necessary to install a twisting machine as equipment, it is possible to suppress an increase in capacity of the torque transmission shaft or the transmission system such as gears and belts.

[Brief description of drawings]

FIG. 1 is an explanatory view of a spacer type optical communication cable manufacturing apparatus of the present invention. 2 (a) and 2 (b) are explanatory views of a projection eye plate and a potentiometer. FIGS. 3A and 3B are explanatory views of angle correction by the twisting machine. FIGS. 4A and 4B are cross-sectional views of the spacer type optical communication cable. Explanation of code 1 …… Spacer with spiral groove 2 …… Spacer feeding drum 3 …… Optical fiber core wire 4 …… Bobbin 5 …… Rotation cage 6 …… Eye plate with protrusions 7 …… Potentiometer 8 …… Twisting machine 9 ... Control part 11 ... Arithmetic part 12a ... Twisting machine drive part 12b ... Take-up machine drive part 12c ... Rotation cage drive part 13 ... Take-up capstain

Claims (1)

[Claims] 1. An optical fiber assembling machine in which an optical fiber is inserted into a spiral grooved spacer by using a rotation cage, and detection is performed to detect a phase difference between the phase of the spiral groove of the spiral grooved spacer and the rotation phase of the rotary gauge. Means for twisting the spacer with a spiral groove, and control means for controlling the twist amount based on the phase difference of the detection means. apparatus.