JPH092736A - Optical fiber winding machine, and winding method thereof - Google Patents

Abstract

PURPOSE: To effectively prevent damage of an optical fiber which is already wound on a winding bobbin without providing a conventional dummy roller. CONSTITUTION: In an optical fiber winding method of winding an optical fiber 1 in lamination while traversing it in a drum length direction of a winding bobbin 4, traversing speed of the optical fiber 1 is increased to wind the optical fiber 1 after desired winding quantity to the winding bobbin 4 is obtained and before cutting the optical fiber 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber winding machine and a winding method thereof.

[0002]

2. Description of the Related Art An optical fiber is cut in order to replace it with a new bobbin when a predetermined amount has been wound on a winding bobbin. However, during this cutting, the optical fiber is pulled and a large tension is generated. Therefore, the optical fiber may sink into the laminated body of the optical fibers already wound and damage the outer surface of the laminated fiber.

Therefore, conventionally, before cutting the optical fiber, the line of the optical fiber is preliminarily changed to a relief portion called a dummy roller. The control of the winding speed of the winding machine including the dummy roller and the winding bobbin detects the vertical movement of the dancer roll provided on the upstream side, and the drive motor of the winding machine is controlled based on the detected value. Although it was performed by feedback control, this method cannot immediately respond to the change in the moving speed of the optical fiber due to the sudden change in the diameter when the optical fiber runs from the winding bobbin to the dummy roller, and therefore a large tension is applied. There is a defect that the optical fiber is generated and damages the optical fiber as in the case of the above cutting.

Therefore, in response to a command for the optical fiber to run from the bobbin to the dummy roller, control is performed so as to reduce the winding rotation speed corresponding to the ratio of the winding diameter of the winding bobbin to the cylinder diameter of the dummy roller. There is a method, and according to this method, a rapid increase in the moving speed of the optical fiber is suppressed to prevent a sharp increase in tension, and the outer surface of the optical fiber is not damaged (Japanese Patent Laid-Open No. 4-159973). reference).

[0005]

However, in the control method described in the above publication, since the winding speed is reduced in accordance with the ratio of the winding diameter of the winding bobbin to the drum diameter of the dummy roller, When the winding amount is changed, or when the bobbin is switched while the winding bobbin is not wound up, the winding diameter of the bobbin differs from the initially set winding diameter. Occurs and the tension suddenly changes.

Further, even if a winding control command is output so as to reduce the winding rotation speed in accordance with the diameter of the dummy roller as in the conventional case, the winding bobbin and the driving means for rotating the winding bobbin are driven. Due to the inertia (inertia), the actual speed of the bobbin does not instantaneously become the rotation speed as the command value, so in any case, a large tension may be generated in the optical fiber due to the difference in the rotation speed.

Further, in the means for riding the optical fiber on the dummy roller (wound winding portion), the winding may become poor at the boundary between the dummy roller and the winding bobbin, and the optical fiber may be broken during the bobbin rotation. For this reason, the unwound optical fibers may be entangled with each other or hitting the already wound optical fibers, which may significantly deteriorate product quality such as scratches and deterioration of transmission characteristics.

In view of the above situation, the present invention provides an optical fiber winding machine and a winding method thereof, which can effectively prevent the damage of the optical fiber already wound on the winding bobbin without providing a dummy roller. The purpose is to provide.

[0009]

In order to achieve the above object,
The present invention has taken the following technical measures. That is, the method of the present invention is a method of winding an optical fiber in which the optical fiber is wound in a laminated shape while traversing in the barrel length direction of the winding bobbin, and a desired winding amount for the winding bobbin is obtained. After that, and before cutting the optical fiber, the traverse speed of the optical fiber is increased to wind the optical fiber (claim 1).

In this case, for a reason described below, after the desired winding amount for the winding bobbin is obtained, the traverse range of the optical fiber is limited to a part of the body of the winding bobbin to form the protective layer. It is preferable to increase the traverse speed of the optical fiber in the portion where the protective layer is formed so that the optical fiber is wound (claim 2).

Further, the apparatus of the present invention comprises a rotation driving means for rotating the winding bobbin of the optical fiber in the winding direction, a traverse means for traversing the optical fiber in the longitudinal direction of the winding bobbin, and the winding. An optical fiber winding machine comprising: a detection sensor that detects a winding amount of the optical fiber with respect to a bobbin; and a cutting unit that cuts a line of the optical fiber after a desired winding amount is obtained. A control means is provided for increasing the traverse speed of the optical fiber by the traverse means before actuating the cutting means, based on the signal that the detection sensor has detected that the desired take-up amount for the take-up bobbin has been reached. (Claim 3).

In this case, the control means has a function of limiting the traverse range of the optical fiber by the traverse means to a part of the body portion of the winding bobbin, and the light by the traverse means is limited in this limited traverse range. A device that increases the traverse speed of the fiber can be adopted (claim 4).

[0013]

In the present invention, the traverse speed of the optical fiber 1 is increased after the desired winding amount for the winding bobbin 4 is obtained and before the optical fiber 1 is cut.
The optical fiber 1 is spirally wound in a state of being inclined with respect to the laminated body 31 which has already been wound.

Therefore, as shown in FIG. 2 (c), even if the optical fiber 1 is cut and the tension F acts on the fiber 1, the tension F is applied in the longitudinal direction of the outermost circumference. It is carried by the plurality of fiber layers 32 arranged side by side, which prevents the optical fiber 1 from sinking inside the laminated body 31.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an optical fiber winder adopting the method of the present invention. In the figure, in the manufacturing line of the optical fiber 1, a take-up machine 3 for taking the optical fiber 1 and sending it downstream, and a take-up machine for taking up the optical fiber 1 taken out from the take-up bobbin 4 rotating in a fixed direction. And 5 are provided.

The take-up machine 3 is provided with a capstan 7 driven by a take-up motor 6 and an annular belt 8 which contacts the outer peripheral surface of the capstan 7 and circulates. The annular belt 8 and the capstan 7 are provided. By driving the capstan 7 with the optical fiber 1 sandwiched between them,
I try to pick up at a constant speed. The take-up motor 6 is provided with means 6A for detecting the number of rotations thereof. The rotation speed detection means 6A is connected to a winding speed control means 21 described later, and the moving speed of the optical fiber 1 is measured based on the rotation speed by the rotation speed detection means 6A. A tachometer, a pulse generator or the like can be used as the rotation speed detecting means 6A.

The moving speed of the optical fiber 1 is measured by a speed sensor provided near the optical fiber 1 flowing in a fixed direction,
Although it can be measured by a detector or the like which detects the number of rotations of the guide roller 16 described later, it is preferable to detect the speed of the optical fiber 1 from the number of rotations of the pulling machine 3 as described above. The reason is that the take-up machine 3 is a drive mechanism that determines the speed of the optical fiber 1, and since it is a structure that is particularly considered so that slippage of the optical fiber 1 does not occur, the most accurate optical fiber 1 Because you can know the speed.

The optical fiber winding machine 5 of the present embodiment has a winding bobbin 4 for the optical fiber 1, a drive shaft 9 for coaxially supporting the bobbin 4, and a rotary motor for rotating the drive shaft 9 ( (Rotational driving means) 10, a slider 11 that supports the drive shaft 9 so as to reciprocate in the axial direction, and a traverse motor 12 that reciprocates the slider 11 in the axial direction.
And.

As shown in FIG. 1, the take-up bobbin 4 has flange portions 12 fixed to both ends of an open cylindrical body portion 13, and the body portion 13 is inserted in the axial direction of the drive shaft 9. It is attached to the coaxial 9 so that it can be inserted and removed freely. Therefore, when the winding of the optical fiber 1 around one winding bobbin 4 is completed, the bobbin 4 is pulled out of the drive shaft 9, and another new bobbin 4 is inserted into the drive shaft 9.

Since the drive shaft 9 is supported by the slider 11 which is reciprocally moved by the traverse motor 12, the optical fiber 1 is wound around the barrel portion 13 of the winding bobbin 4 in the stack length direction while being distributed in the barrel length direction. Will be done.
Then, the optical fiber 1 is wound from the slider 11 and the traverse motor 12 that drives the slider 11 to the bobbin 4
Traverse means 15 for traversing the body length direction is configured.

As the traverse means 15,
The guide roller 16 provided immediately upstream of the winding machine 5 may be configured to move in the cylinder length direction of the winding bobbin 4, but according to this, the line itself of the optical fiber 1 is reciprocated left and right. Therefore, it is preferable to move the winding bobbin 4 itself in the trunk length direction as in the present embodiment, because excessive tension may be generated.

A pair of front and rear pulleys 17 are provided in parallel between the take-up machine 3 and the winder 5, and a dancer roll 18 is provided between the pulleys 17 so as to be vertically movable. The dancer roll 18 is pivotally supported by a tip end portion of a vertically swingable guide arm 19, and a dancer position detector including a sensor for detecting an inclination angle of the arm 19 is provided at a base end portion of the guide arm 19. 20 are provided.

The dancer position detector 20 is connected to a winding speed control means 21 which feedback-controls the number of revolutions of the winding machine 5 in response to a change in the speed of the optical fiber 1 accompanying the winding thickening of the winding bobbin 4. The winding speed control means 21 is connected to the amplifier 22 of the rotary motor 10.
That is, when the winding diameter of the winding bobbin 4 increases and the moving speed of the optical fiber 1 during winding gradually increases, the tension received from the optical fiber 1 increases and the dancer roll 18 rises. Position detector 20
Is detected by

Therefore, based on the value detected by the dancer position detector 20, the winding speed control means 21 issues a command to the amplifier 22 to decrease the rotation speed of the rotary motor 10, whereby the light in the take-up machine 3 is driven. The rotation speed of the winding machine 5 is always set to an appropriate value in accordance with the moving speed of the fiber 1. The optical fiber 1 that has passed through the pulley 17
Is the guide roller 16 provided immediately upstream of the drive shaft 10.
And then wound onto the winding bobbin 4.

The optical fiber winding machine 5 of this embodiment further includes a detection sensor 23 for detecting the winding amount of the optical fiber 1 with respect to the winding bobbin 4, and the optical fiber after the desired winding amount is obtained. Cutting means 24 for cutting the line 1;
Based on the detection signal from the detection sensor 23, the cutting means 2
4 is operated, the traverse speed control means 25 increases the traverse speed of the optical fiber by the traverse means 15.

The traverse speed control means 25 includes a normal speed setting section 26, an acceleration setting section 27, and a speed control section 2.
8 is internally provided, and the speed control unit 28 is connected to either the normal speed setting unit 26 or the speed increasing setting unit 27 via a changeover switch 29, and the changeover switch 29
Is connected to the detection sensor 23. The speed control unit 28 is connected to the winding speed control unit 21 and the amplifier 30 of the traverse motor 12, and the optical fiber input from either the normal speed setting unit 26 or the speed increasing setting unit 27. 1 traverse speed of the amplifier 30
Output to

The normal speed setting unit 26 is provided for the slider 11
The traverse speed of the optical fiber 1, that is, the traverse speed of the optical fiber 1, is set to a speed at which the bobbin 4 moves in the trunk length direction by about the diameter of the optical fiber 1 while the optical fiber 1 is wound around the bobbin 4 once. is there. Therefore, when the take-up bobbin 4 is traversed at the set speed V1 of the normal speed setting unit 26, the optical fiber 1 is taken up so that each turn is almost in close contact as shown in FIG. 2 (a). Become.

On the other hand, the speed-up setting unit 27 uses the optical fiber 1
The traverse speed is set to a speed at which the bobbin 4 moves in the trunk length direction from several times to several tens of times the diameter of the optical fiber 1 while the optical fiber 1 is wound around the bobbin 4 once. Therefore, when the winding bobbin 4 is traversed at the set speed V2 in the speed increasing setting unit 27,
As shown in FIG. 2B, a direction in which one turn of the optical fiber 1 is spirally wound away in the body length direction and inclined with respect to the laminated body 31 of the already wound optical fibers 1. Then, the optical fiber 1 is wound up.

Switching to the acceleration setting unit 27 is performed by the detection sensor 23 and the changeover switch 29 described above. That is, the normal speed setting unit 26 and the speed increase setting unit 27 are connected in parallel to the speed control unit 28 via the changeover switch 29, and the changeover switch 29 is always connected to the normal speed setting unit 26 side. Detection sensor 2
When the signal from 3 is issued, it is connected to the speed increasing setting section 27 side.

The winding speed control means 21 and the traverse speed control means 25 can actually be incorporated in the same CPU. In this case, whether or not the traverse speed control means 25 is provided is operated by a program. You can deal with it. Further, as the detection sensor 23, the optical fiber 1 is determined based on the number of rotations of the guide roller 16 and the take-up motor 6.
It is possible to employ a measuring device for measuring the transport length of the bobbin, an optical sensor for actually measuring the winding diameter of the bobbin 4, a limit switch, or the like.

The cutting means 24 comprises a cutter provided between the guide roller 16 and the winding bobbin 4, and is connected to the speed control section 28. Therefore, the speed control unit 28 is internally provided with a delay circuit or a timer so as to activate the cutting means 24 after a while after increasing the traverse speed of the optical fiber 1. Next, a method of winding the optical fiber 1 by the optical fiber winding machine 5 and its action will be described.

First, while the optical fiber 1 is normally wound on the winding bobbin 4, the changeover switch 29 is grounded on the side of the normal speed setting section 27, and the traverse speed V1 set by the same section 27 is used. The optical fiber 1 is traversed. Therefore, the optical fibers 1 are wound in a laminated form so as to be in close contact with each other as shown in FIG.

After that, when the detection sensor 23 detects that the winding is full, the changeover switch 29 of the traverse speed control means 25 is switched to the speed increasing setting section 27, and the optical fiber is set at the traverse speed V2 set by the same section 27. 1 is traversed. Then, at such traverse speed V2, the bobbin 4 moves in the trunk length direction from several times to several tens of times the diameter of the optical fiber 1 while the bobbin 4 makes one rotation, as shown in FIG. 2 (b). In addition, the optical fiber 1 is spirally wound in a state of being inclined with respect to the laminated body 31 which has already been wound.

In this case, V speed is increased without increasing the traverse speed.
Assuming that the optical fiber 1 is cut as it is at 1, as shown in FIG. 3, the tension F generated at the time of the cutting acts on the radial direction of the fiber laminated body 31 and the line of the optical fiber 1 is concerned. It may sink into the laminated body 31 and damage the already wound optical fiber 1. In a severe case, the optical fibers 1 may be entangled with each other and the entire bobbin 4 may become useless.

In this respect, in the present embodiment, since the optical fiber 1 is wound in a state of being inclined with respect to the laminated body 31 already wound, the optical fiber 1 is cut in such a state and tension is applied to the same. Even if F acts, as shown in FIG. 2 (c), the tension F will be taken up by the plurality of fiber layers 32 lined up in the trunk length direction and wound around the outermost circumference. The optical fiber 1 is prevented from sinking inside the laminated body 31.

Then, after the line of the optical fiber 1 is cut by the cutting means 24, the optical fiber 1 is transferred to the adjacent winding bobbin 4 arranged in tandem. As described above, according to the present embodiment, even if the tension of the optical fiber 1 increases at the time of cutting, it is possible to prevent the optical fiber 1 from sinking into the laminated body 31 on the bobbin 4. Therefore, even if the conventional dummy roller is not provided, the optical fiber 1 is not provided. The damage of 1 can be prevented.

Since the dummy roller is not necessary, the following problems can be solved. (1) The optical fiber 1 does not sink into the laminated body 31 of the bobbin 4 and damage the fiber 1 due to the increase in the tension generated when the optical fiber 1 rides on the dummy roller. (2) It is possible to prevent the optical fiber 1 from being damaged at the boundary between the dummy roller and the bobbin 4 due to bad winding, collapse of winding, entanglement, and hitting. (3) Since the dummy roller does not have to be provided, the mechanical structure is simplified and the equipment cost and maintenance cost can be reduced. (4) Since the speed control when the optical fiber 1 runs on the dummy roller is also unnecessary, the facility cost and the maintenance cost can be reduced, and the success rate of switching the bobbin 4 can be improved and the production efficiency can be improved. (5) The optical fiber 1 wound around the dummy roller becomes scrap, but the production efficiency is improved by eliminating it.

FIG. 4 shows another embodiment of the present invention. In this case, the traverse speed control means 25 is different from the winding machine 5 of the above embodiment in that
Take up the traverse range of the optical fiber 1 by the bobbin 4
The traverse means 1 is provided with a function of limiting it to a part of the body 13 of the traverse means 1.
5 to increase the traverse speed of the optical fiber 1.

That is, in this example, as shown in FIG. 4A, after the desired winding amount for the winding bobbin 4 is obtained, the traverse range of the optical fiber 1 is changed to the body portion 13 of the winding bobbin 4. The protective layer 33 composed of several layers of the optical fiber 1 is formed by limiting to only a part of
As shown in FIG. 4B, the traverse speed of the optical fiber 1 is increased at the portion where the protective layer 33 is formed to be wound.

For this reason, the optical fiber 1 forming the above-mentioned protective layer 33 is damaged only by the tension at the time of cutting. Therefore, even if the optical fiber 1 is damaged even after the speed-up traverse, There is an advantage that only the protective layer 33 needs to be rewound. It should be noted that the above embodiments are illustrative and not restrictive. That is,
The scope of the present invention is shown by the claims described above, and all modifications that come within the meaning of the claims are included in the invention of the present application.

[0041]

As described above, according to the present invention,
Since the damage to the optical fiber 1 already wound on the winding bobbin 4 can be effectively prevented without providing a dummy roller, the equipment cost and maintenance cost of the winding machine 5 can be reduced, and the production efficiency of the optical fiber 1 can be reduced. Can be improved (claims 1 and 3).

When the traverse speed is increased in the protective layer 33 formed by limiting the traverse range, even if the optical fiber 1 is damaged, only the protective layer 33 needs to be rewound. The production efficiency can be further improved (claims 2 and 4).

[Brief description of drawings]

FIG. 1 is a control configuration diagram of an optical fiber winding machine.

2A is a side view of a winding bobbin during normal winding, FIG. 2B is a side view of the winding bobbin after speedup, and FIG. 2C is an enlarged view thereof.

FIG. 3 is a side view of a take-up bobbin showing a sinking phenomenon of an optical fiber.

FIG. 4A is a side view of the winding bobbin during normal winding, and FIG. 4B is a side view of the winding bobbin after speedup.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical fiber 4 Winding bobbin 5 Winding machine 10 Rotation drive means (rotation motor) 13 Body part 15 Traverse means 23 Detection sensor 24 Cutting means 25 Traverse speed control means 31 Laminated body 33 Protective layer

Front Page Continuation (72) Inventor Shigeo Hiruma 2-3-3 Niihama, Arai-cho, Takasago-shi, Hyogo Kobe Steel Works Takasago Works

Claims (4)

[Claims] 1. A bobbin (4) for winding an optical fiber (1)
In a winding method of an optical fiber which is wound in a laminated shape while being traversed in the body length direction of the optical fiber, the optical fiber (1) is obtained after a desired winding amount for the winding bobbin (4) is obtained. Before cutting the optical fiber (1), the traverse speed of the optical fiber (1) is increased and the optical fiber (1) is wound up. 2. The traverse range of the optical fiber (1) is limited to a part of the body (13) of the winding bobbin (4) after the desired winding amount for the winding bobbin (4) is obtained. A protective layer (33) is formed in advance, and the traverse speed of the optical fiber (1) is increased at the portion where the protective layer (33) is formed to wind the optical fiber (1). The method of winding an optical fiber according to claim 1. 3. A bobbin (4) for winding an optical fiber (1)
A rotation driving means (10) for rotating the optical fiber (1) in the winding direction, a traverse means (15) for traversing the optical fiber (1) in the longitudinal direction of the winding bobbin (4), and the winding bobbin (4). A detection sensor (23) for detecting the winding amount of the optical fiber (1) with respect to, and a cutting means (24) for cutting the line of the optical fiber (1) after a desired winding amount is obtained. In the optical fiber winder equipped with, the cutting means (24) is operated based on a signal that the detection sensor (23) detects that the desired winding amount for the winding bobbin (4) has been reached. An optical fiber winding machine characterized by further comprising a control means (25) for increasing the traverse speed of the optical fiber (1) by the traverse means (15) before the operation. 4. The control means (25) has a function of limiting the traverse range of the optical fiber (1) by the traverse means (15) to a part of the body part (13) of the winding bobbin (4). The traverse speed of the optical fiber (1) by the traverse means (15) is increased in the limited traverse range.
The optical fiber winding machine described in 1.