JP4446142B2 - Optical fiber cutting device and cutting method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cutting apparatus and a cutting method for a bare glass optical fiber exposed by removing a coating when a single optical fiber is fusion-spliced.
[0002]
[Prior art]
When connecting optical fibers or coupling an optical fiber to an optical component, the tip of the optical fiber strand (hereinafter also used to include an optical fiber core coated with an optical fiber strand) is used. The coating is removed to expose a glass optical fiber (hereinafter referred to as an optical fiber). The surface of the optical fiber exposed after the coating is removed is wiped off with a gauze containing a solvent, and the like. Thereafter, the optical fiber is cut with a fiber cutter so as to have a predetermined cut length to obtain a mirror cut surface. A series of these optical fiber end processing steps are individually performed using each single tool or performed by an automated apparatus.
[0003]
When cutting an optical fiber, the cut surface of the optical fiber is required to be a mirror surface that is perpendicular to the axial direction and has a smooth surface. Conventionally, various methods for performing such cutting have been proposed. For example, there are a method in which an optical fiber is scratched with a blade and then the optical fiber is bent and cut, a method in which both sides of the damaged portion of the optical fiber are fixed and the damaged portion is pressed and cut. In these cutting methods, a member for applying pressure or bending to the optical fiber at the time of cutting is a factor that touches the surface of the optical fiber and damages it after the fusion splicing. There is a method of scratching and cutting an optical fiber with a scratching blade in a state where tensile tension is applied to the optical fiber that solves such a problem.
[0004]
FIG. 10 is a view showing an example of a method of scratching and cutting with a scratching blade in a state where a tensile tension is applied to a conventional optical fiber (see Japanese Patent Laid-Open No. 7-80798). In the figure, 1 is a base table, 2 is a first clamp table, 3 is a first clamp, 4 is a second clamp table, 5 is a second clamp, 6 is a slider, 7 is a scratching blade, 9 is a tilting mechanism, 10 Is an optical fiber, 10a is a glass optical fiber, and 10b is an optical fiber coating.
[0005]
In this optical fiber cutting device, a first clamp table 2 and a second clamp table 4 are integrally disposed on a base table 1, and a slider 6 provided with a scratching blade 7 is disposed between both clamp tables. It is configured. The first clamp base 2 is provided with a groove for receiving the optical fiber 10, and the front end portion of the optical fiber coating 10 b (hereinafter referred to as coating) is fixed by closing the first clamp 3. The second clamp table 4 is provided with a groove for accommodating a bare glass optical fiber 10a (hereinafter referred to as an optical fiber) from which the coating 10b of the optical fiber 10 is removed, and by closing the second clamp 5, The tip portion of the glass optical fiber 10a is fixed. Further, a spring 8 is disposed on the first clamp table 2 and is normally biased in a direction away from the second clamp table 4.
[0006]
The first clamp base 2 is moved toward the second clamp base 4 against the spring 8, and the optical fiber 10 having the tip end removed is connected to the first clamp base 2 and the second clamp base 4 as shown in the figure. When set to, tensile tension is applied to the optical fiber 10a. In this state, when the slider 6 is slid in a direction orthogonal to the axial direction of the optical fiber 10a, the optical fiber 10a is damaged by the scratching blade 7. The damaged optical fiber 10a is cut by expanding the damaged portion by tensile tension. In Japanese Patent Laid-Open No. 7-80798, there is provided a tilting mechanism for gradually increasing the tensile tension after the optical fiber 10a is damaged.
[0007]
In the above-described optical fiber cutting device, the scratching blade 7 is slid in a direction orthogonal to the axial direction of the optical fiber 10a, so that the scratch depth needs to be adjusted in advance. When the depth of damage is insufficient, it is not cut with the applied tensile tension, and when the depth of damage is excessive, the cut surface does not become a mirror surface and the variation in the cutting angle increases. For this reason, it is necessary to strictly adjust the tensile tension and the damage depth to the optical fiber 10a, and it is necessary to provide a mechanism for gradually increasing the tensile tension after the damage. Requires an adjustment mechanism. Further, since the blade portion of the wound blade 7 is fixed, it is necessary to constantly monitor the wear state of the blade portion and replace the wound blade. When using a circular blade, the position of the blade portion is changed. There is a need.
[0008]
[Problems to be solved by the invention]
The present invention has been made in view of the above-described circumstances, and does not require adjustment of the tensile tension or the flaw depth of the optical fiber, and the wear of the flawed blade is small, and the fiber is accurately obtained without requiring skill. It is an object of the present invention to provide an optical fiber cutting device and a cutting method capable of cutting.
[0009]
[Means for Solving the Problems]
The optical fiber cutting device of the present invention removes the coating of the single-core optical fiber or the end of the optical fiber, and applies tensile tension to the exposed glass optical fiber to add the glass optical fiber. An optical fiber cutting device for scratching and cutting to a predetermined length by a wound blade, the first clamp portion for clamping the coated portion of the optical fiber strand or the optical fiber core wire from which the coating of the end portion has been removed; A second clamp portion for clamping the exposed glass optical fiber portion; Rotation is given by drive motor The wound blade is formed with a circular rotary blade. By drive motor While rotating, feed vertically toward the axis of the exposed glass optical fiber section. Hurt A cutter mechanism is provided.
[0010]
Further, the optical fiber cutting method of the present invention provides a glass optical fiber by applying a tensile tension to a glass optical fiber exposed by removing a coating of a single optical fiber or an end of the optical fiber. An optical fiber cutting method in which an optical fiber strand or an optical fiber core wire from which an end portion has been removed is clamped at a covering portion. After holding the clamp part and the exposed glass optical fiber part with a second clamp part and applying tensile tension to the glass optical fiber, Rotation is given by drive motor Using a circular rotary blade, By drive motor While rotating, feed vertically toward the axis of the exposed glass optical fiber section. Hurt It is characterized by that.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view in which a part of the optical fiber cutting device is broken, and FIG. 2 is a diagram showing a clamped state of the optical fiber. In the figure, 10 is an optical fiber, 10a is a bare glass optical fiber, 10b is an optical fiber coating, 11 is an apparatus housing, 12 is a first clamp part, 13 is a second clamp part, and 14 is a cutter mechanism. , 15 is a control unit, 16 is a drive switch, 16b is a power switch, 16c is an LED (orange, green), 17 is a slide base, 18 is a first clamp base, 19 is a first clamp member, and 20 is a hinge shaft , 21 is a spring member, 22 is a V groove, 23 is a pressing member, 24 is a magnet, 25 is a second clamp base, 26 is a second clamp member, 27 is a guide, 28 is an elastic member, 30 is a rotary blade, 31 Is a rotary blade drive motor, 32 is a driven member, 33 is a guide member, 34 is a cam member, and 35 is a cam drive motor.
[0012]
As shown in FIG. 1, the optical fiber cutting device includes a first clamp unit 12, a second clamp unit 13, a cutter mechanism unit 14, a control unit 15, a drive switch 16a, a power switch 16b, and an LED 16c. Are arranged. The 1st clamp part 12 clamps the coating | coated part 10b of the optical fiber strand 10 (it is used in the meaning also including the optical fiber core wire which further coat | covered the optical fiber strand further hereafter). The 2nd clamp part 13 clamps the edge part side of the bare glass optical fiber 10a (henceforth an optical fiber) exposed.
[0013]
As shown in FIG. 2, the optical fiber 10 a clamped by closing the first clamp portion 12 and the second clamp portion 13 moves the first clamp portion 12 away from the second clamp portion 13. By energizing, tensile tension is given. When the tension mechanism is applied to the optical fiber 10a and the cutter mechanism unit 14 is gradually driven upward by the control unit 15, the optical fiber 10a is gradually damaged by the rotary blade, and the minimum damage corresponding to the tensile tension is applied. Cut at depth. Details of each unit will be described below.
[0014]
The first clamp portion 12 is configured such that a clamp base 18 is slidably mounted on a slide base 17 having a guide groove, and a first clamp member 19 is attached to the first clamp base 18 so as to be opened and closed by a hinge shaft 20. Is done. The first clamp base 18 is biased in a direction away from the second clamp portion 13 by the spring member 21. The spring member 21 may be a metal spring such as a coiled tension spring, a non-metallic spring formed of rubber or synthetic resin, or a fluid spring using air or oil. The first clamp base 18 is formed of metal, ceramic, or the like, and a V-groove 22 into which a covered portion of the optical fiber is put is provided on the upper surface.
[0015]
On the inner surface side of the first clamp member 19, a pressing member 23 that presses the coated portion of the optical fiber strand against the V groove 22 is provided. As this pressing member, a member having a certain degree of elasticity is used so as not to give an excessive pressing force to the optical fiber 10 and to surely prevent the movement in the axial direction. For example, an elastic body such as rubber is used. The thing of the structure which bonded the thin metal layer to the surface of this can be used. In addition, a magnet 24 is embedded in one or both of the first clamp base 18 and the first clamp member 19, and the clamped state is held by the attraction force. Instead of using the attracting force of the magnet 24, a mechanical locking means can be used.
[0016]
The second clamp portion 13 is configured by mounting a second clamp member 26 on the second clamp base 25 so as to be opened and closed by the hinge shaft 20. By providing a guide 27 with a V-shaped cutout 27a at the outer end of the second clamp base 25, the tip of the optical fiber 10a is guided to accurately position the optical fiber 10a in a predetermined direction. be able to. Unlike the V-groove for storing and holding the optical fiber, the guide 27 easily positions the tip position of the optical fiber. Although the guide 27 has a simple configuration, the workability is extremely improved. Further, by providing the guide 27, the optical fiber 10a can be set accurately, the scratching blade can be applied perpendicularly to the optical fiber 10a, and the variation in the cutting angle at the cut end face can be reduced. it can.
[0017]
The elastic member 28 may be provided on both or either one of the clamp surfaces sandwiching the optical fiber 10a of the second clamp base 25 and the second clamp member 26 (the other is a V-groove). The elastic member 28 is made of an elastic member such as neoprene rubber, and is brought into close contact with the outer peripheral surface of the optical fiber 10a by elastic deformation, so that a large clamping force can be obtained without twisting the optical fiber. If the optical fiber is cut in a twisted state, the cutting angle may vary. Further, similarly to the first clamp portion 12, the magnet 24 can be embedded in one or both of the second clamp base 25 and the second clamp member 26, and the clamped state can be held by the attraction force.
[0018]
The cutter mechanism unit 14 guides the driven member 32 and the driven member 32 by moving the rotary blade 30 that scratches the optical fiber 10a, the rotary blade drive motor 31 that applies a predetermined rotation to the rotary blade 30, and the rotary blade 30 upward. It comprises a guide member 33, a cam member 34 that drives the driven member 32, and a cam drive motor 35 that drives the cam member 34. The rotary blade 30 is disposed immediately below the optical fiber 10a, is pushed up toward the axis of the optical fiber 10a while rotating, and damages the optical fiber 10a to which tensile tension is applied.
[0019]
The rotary blade 30 is sharp when a diamond coating blade in which a diamond having a particle size of 3 μm to 8 μm is coated with CVD on a blade portion of a substrate made of a cemented carbide or the like suitable for glass cutting is used. A high-quality cut surface can be obtained by scratching. If the outer diameter of the rotary blade 30 is 20 mm, the rotational speed is 210 to 250 rpm (1100 to 1300 mm / sec in terms of the linear speed of the blade), and the upward feed speed is about 0.19 to 0.21 mm / sec. It is preferable to do this. Since the rotary blade 30 damages the optical fiber by its rotation, the outer peripheral blade portion is evenly worn and has a long life.
[0020]
As shown in FIG. 1, for example, the upper feed mechanism of the rotary blade 30 is brought into contact with the rotary blade drive motor 31 integrated with the rotary blade 30 at the upper end of the driven member 32, and the lower end of the driven member 32. The cam member 34 can be brought into contact with this. The cam member 34 may have various shapes such as an eccentric circular plate, but may be configured by rotation-linear conversion using a gear mechanism such as a worm gear without using the cam member. Further, by interposing a speed reduction mechanism between the cam member 34 and the cam drive motor 35, the accuracy and resolution of the feed rate of the rotary blade 30 can be improved. In the figure, an example is shown in which separate motors of the rotary blade drive motor 31 and the cam drive motor 35 are used. However, since the rotary blade 30 is rotated and fed simultaneously, one drive source is used. It can also be driven.
[0021]
The control unit 15 detects the set state of the optical fiber 10 with a sensor (not shown) and performs position control and drive control of the rotary blade 30 described above. For example, a state in which the optical fiber 10a is cut and the first clamp portion 12 returns to the origin position is detected by a photo interrupter or the like (not shown) to notify the end of cutting of the optical fiber. It is detected whether or not the rotary blade 30 is at the start point (origin) of the operation stroke, and control is performed to return to the origin position after the end of cutting, and when the power is turned off during the processing operation, the power is turned on again. Is used for control to return to the origin position. From the viewpoint of preventing danger, it is detected whether or not the optical fiber is in a clamped state, and control is performed so that the rotary blade 30 is rotated and fed only when it is in the clamped state. Furthermore, it is possible to detect the upper limit position of the rotary blade 30 and perform control so that the feed does not overrun.
[0022]
The optical fiber cutting device configured as described above can be operated in a sequence as shown in FIG. 3, for example. First, in step S1, the power switch 16b of the apparatus is turned on. When the rotary blade 30 is stopped at a midway position by turning on the power, control to return to the origin position is performed. During the return operation to the origin position, the LED (orange) 16c is turned on. After returning to the origin position, the LED (green) 16c is lit to indicate that it is in a standby state. When the rotary blade 30 is at the origin position from the beginning, the LED (green) 16c is lit to indicate that it is in a standby state.
[0023]
In the next step S2, the optical fiber strand 10 is set. The optical fiber 10 is housed in the V-groove 22 of the first clamp base 18 with the optical fiber 10a exposed by previously removing the coating on the tip. At this time, the first clamp member 19 is accommodated by adjusting the cut length of the optical fiber 10a so that the tip of the covering portion 10b is aligned with the inner end of the first clamp base 18 or protruding a predetermined length. Close and clamp the optical fiber 10. Then, the 1st clamp base 18 is moved to the 2nd clamp base 25 side against the spring member 21, and this state is locked. The first clamp base 18 may be moved before housing the optical fiber 10.
[0024]
The optical fiber 10a from which the coating has been removed is placed on the second clamp base 25, the tip portion is passed through the V groove of the guide 27, and then the second clamp member 26 is closed to clamp the optical fiber 10a. To do. Thereafter, the movement lock of the first clamp base 18 may be released, but may be released in conjunction with the driving switch 16a described below.
[0025]
In the next step S3, the drive switch 16a is turned on. By turning on the drive switch 16a, the rotary blade drive motor 31 and the cam drive motor 35 are simultaneously rotated, and the rotary blade 30 is rotated and sent upward toward the axis of the optical fiber 10a to damage the optical fiber 10a. . In this state, the LED (orange) 16c is lit to indicate that it is in an operating state. Since tensile tension is applied to the optical fiber 10a, the damage gradually proceeds at a constant speed, and the optical fiber 10a is cut at the same time as the damage depth reaches a predetermined value.
[0026]
The damage depth at which cutting is caused by the rotary blade 30 on which the optical fiber 10a rotates varies depending on the applied tensile tension. In the present invention, the tensile tension applied to the optical fiber 10a is automatically determined by the elastic force of the spring member 21, and this tensile tension determines the damage depth. That is, the tensile tension applied to the optical fiber 10a is always cut with the minimum damage depth, and it is not necessary to set the damage depth for blade pressure adjustment in advance. Therefore, even if it does not depend on a skilled person, an optical fiber 10a is not damaged, and an exact fiber cut can be performed without giving an excessive damage. The average deflection angle of the cut surface in the conventional optical fiber cutting method (method of FIG. 10) was 0.7 °, whereas the average deflection angle of the cut surface in the optical fiber cutting method of the present invention was 0.7 °. Was 0.45 °.
[0027]
In step S4, the optical fiber 10a is cut, and the first clamp base 18 is returned to the original position by the spring member 21. Moreover, it detects that the 1st clamp base 18 returned to the original position, stops a rotary blade drive motor, reverses rotation of the cam drive motor 35, and returns the rotary blade 30 to a lower origin position. At this time, the LED (orange) 16c is turned on to indicate that the rotary blade 30 is in the origin return state.
[0028]
In step S5, it is detected that the rotary blade 30 has returned to the origin position, and the drive of the cam drive motor 35 is stopped. As a result, the LED (green) 16c is turned on to indicate that it is in a standby state for performing the next disconnection.
[0029]
4 to 6 show a second embodiment of the present invention, in which an optical fiber holder 40 that can be attached to and detached from the first clamp portion 12 is used. In the figure, 36 is a holder support base, 37 and 38 are holder holders, 39 is a V-groove base, and 40 is an optical fiber holder. For other reference numerals, the same reference numerals are used for components having the same functions as those in FIG. 4, 5, and 6 are diagrams showing examples in which different types of optical fiber holders 40 are used and the clamping methods are different.
[0030]
By using the detachable optical fiber holder 40 for the clamp of the optical fiber strand 10 of the first clamp part 12, the versatility of the optical fiber cutting device can be provided. For example, when the coated outer diameter of the optical fiber 10 is different, the same optical fiber cutting device can be used by using an optical fiber holder having a storage groove corresponding to the coated outer diameter.
[0031]
Moreover, it is necessary to change the cut length of the optical fiber 10a of the optical fiber 10 in the case of the high-strength fusion splicing and the case of the non-high-strength fusion splicing, but by changing the shape of the optical fiber holder 40 It is possible to use the same optical fiber cutting device by clamping so as to obtain a predetermined cut length in advance. The high-strength fusion splicing means that the cut length of the optical fiber 10a is shortened and the coating tip portion is clamped and fusion spliced, and the non-high-strength splicing is the cut length of the optical fiber 10a. Is increased, and the tip end portion thereof is held by the V-groove substrate to be fusion-bonded. Prior to detailed description of FIGS. 4 to 6, the configuration of the optical fiber holder 40 will be described.
[0032]
7 shows a first holder example, FIG. 7 (A) shows an unclamped state, FIGS. 7 (B) and 7 (C) show a clamped state, FIG. 7 (B) and FIG. 7 (C) Indicates a state in which the protruding amount of the tip of the coating 10b of the optical fiber 10 is varied. FIG. 8 shows a second holder example, FIG. 8A is an unclamped state, and FIG. 8B is a diagram showing a clamped state. FIG. 9 shows a third holder example, FIG. 9 (A) shows an unclamped state, and FIG. 9 (B) shows a clamped state. 7 to 9, in the drawings, 41 is a holder base, 42 is a clamp member, 43 is a hinge shaft, 44 is a V groove, 45 is an elastic member, 46 is a magnet, 47 is an extension, 48 is a concave groove, Reference numeral 49 denotes a positioning protrusion.
[0033]
The optical fiber holder 40 shown in FIG. 7 is configured by connecting a clamp member 42 to a holder base 41 so as to be rotatable by a hinge shaft 43. On the holder base 41 side, a V-groove 44 for receiving the covering portion 10b of the optical fiber 10 is provided. An elastic member 45 that effectively presses the optical fiber 10 housed in the V-groove 44 may be disposed on the clamp member 42 side. Further, the magnet 46 can be embedded in one or both of the holder base 41 side and the clamp member 42 side, and the clamped state can be held by the attractive force of the magnet 46. Further, a magnet (not shown) may be embedded on the bottom side of the holder base 41 and attached to the holder support base 36 (see FIG. 4) by the magnet's attracting force. The optical fiber 10 is clamped by changing the protruding amount of the coating 10b from the end of the optical fiber holder 40 according to the required cut length of the optical fiber 10a.
[0034]
The optical fiber holder 40 shown in FIG. 8 is the same as the example of FIG. 7 in that a clamp member 42 is rotatably coupled to a holder base 41 by a hinge shaft 43. In FIG. 8, the extension 47 is integrally provided at one end of the holder base 41, and the V-groove 44 is continuously provided from the holder base 41. The coating 10b of the optical fiber 10 is housed so as to extend in the V-groove portion of the extension 47, and when set in the optical fiber cutting device, it is clamped at the tip of the extension 47 to cut the optical fiber 10a. Shorten the length and enable high strength fusion splicing.
[0035]
The optical fiber holder 40 shown in FIG. 9 has a structure in which a clamp member 42 is rotatably coupled to a holder base 41 by a hinge shaft 43, and an extension 47 is integrally provided at one end of the holder base 41. This is the same as the example of FIG. In FIG. 9, a groove 48 is formed on the base side of the extension 47, and a positioning protrusion 49 is provided on the front portion of the groove 48. Further, the V-groove ahead of the concave groove 48 is formed at such a depth that the exposed optical fiber 10a has the same storage height position as the holder base 41. The optical fiber 10 can be positioned by bringing the tip of the coating 10b into contact with the positioning protrusion 49, and the cutting position of the optical fiber 10a from the tip of the coating 10b can be accurately performed. This optical fiber holder 40 is suitable for a case where a non-strength fusion splicing is performed by increasing the cut length of the optical fiber 10a when the coating thickness is large such that the optical fiber coating outer diameter is 0.9 mm. Yes.
[0036]
Next, returning to FIGS. 4 to 6, a second embodiment will be described. FIG. 4 is a view showing an example in which the optical fiber holder 40 having the form shown in FIGS. 7A and 7B is used for the first clamp portion 12. The first clamp portion 12 is configured by slidably mounting a holder support base 36 on a slide base 17 having a guide groove, and placing the optical fiber holder 40 shown in FIG. 7 on the holder support base 36. The optical fiber holder 40 is positioned and placed on a support portion 36a having a stepped portion of the holder support base 36 in a state in which the optical fiber strand 10 from which the coating of the tip portion has been removed is clamped, and holds the holder press 37 and the like. Fixed by means.
[0037]
Further, the holder support base 36 is urged in the direction away from the second clamp portion 13 by the spring member 21 in the same manner as the configuration of FIG. 1, and after the optical fiber holder 40 is mounted or just before the mounting, Is moved to the clamp 13 side and locked. The optical fiber 10a from which the coating has been removed is clamped in the same manner as described with reference to FIG. After setting the optical fiber 10, the cutting operation is performed in the sequence described with reference to FIG.
[0038]
FIG. 5 is a view showing an example in which the optical fiber holder 40 having the form shown in FIGS. 7A and 7C is used for the first clamp portion 12. The first clamp portion 12 has the same configuration as that of FIG. 4 in which the holder support base 36 is slidably mounted on the slide base 17 having the guide groove. However, the difference is that a V-groove base 39 is provided at the front portion of the holder support base 36, the holder presser 38 is L-shaped, and an elastic member 38a is attached to the tip thereof. In the optical fiber 10 clamped by the optical fiber holder 40, the tip of the coating 10 b protrudes more than the end of the optical fiber holder 40. When the optical fiber holder 40 is placed on the holder support base 36, the tip end portion of the coating 10 b is accommodated in the V-groove base 39 and held by the elastic member 38 a at the tip end of the holder press 38. By using the configuration of FIG. 5, the cut length of the optical fiber 10a can be shortened to enable high-strength fusion splicing.
[0039]
FIG. 6 is a diagram showing an example in which the optical fiber holder 40 having the configuration shown in FIG. The first clamp portion 12 has a configuration in which a holder support base 36 is slidably mounted on a slide base 17 having a guide groove, and an L-shaped holder press 38 and an elastic member 38a are the same as in FIG. However, FIG. 6 is different in that the V-groove base 39 is provided on the optical fiber holder 40 side. By using the optical fiber holder 40 of FIG. 8, a clamp having the same function as that of FIG. 5 can be performed. Also, the optical fiber holder 40 having the configuration shown in FIG. 9 is similarly placed in FIG. 6, and the cut length of the optical fiber 10 a is increased to enable non-strength fusion splicing.
[0040]
【The invention's effect】
As is clear from the above description, the rotary blade is By drive motor Rotate and feed toward the optical fiber axis Hurt Accordingly, it is possible to always cut with the minimum damage depth with respect to the tensile tension applied to the optical fiber. Further, since the rotating blade damages the optical fiber by the rotation, the outer peripheral blade portion is evenly worn and has a long life. Therefore, it is not necessary to set the damage depth for adjusting the tension of the optical fiber and the blade pressure in advance, and even if not by a skilled person, the optical fiber is not damaged and may be excessively damaged. And accurate fiber cutting can be performed. Further, by setting the optical fiber using the optical fiber holder, it is possible to cope with cases where the outer diameter of the optical fiber coating is different or the cut length of the optical fiber is different.
[Brief description of the drawings]
FIG. 1 is a perspective view of an optical fiber cutting device for explaining a first embodiment of the present invention.
FIG. 2 is a diagram showing a clamped state of an optical fiber according to the first embodiment of the present invention.
FIG. 3 is a diagram showing an operation sequence of the present invention.
FIG. 4 is a diagram showing a first example for explaining a second embodiment of the present invention;
FIG. 5 is a diagram showing a second example for explaining the second embodiment of the present invention;
FIG. 6 is a diagram showing a third example for explaining the second embodiment of the present invention;
FIG. 7 is a diagram showing a first example of an optical fiber holder used in the second embodiment.
FIG. 8 is a diagram showing a second example of an optical fiber holder used in the second embodiment.
FIG. 9 is a diagram showing a third example of an optical fiber holder used in the second embodiment.
FIG. 10 is a diagram illustrating an example of a conventional optical fiber cutting device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Optical fiber strand, 10a ... Glass optical fiber, 10b ... Optical fiber coating, 11 ... Apparatus housing | casing, 12 ... 1st clamp part, 13 ... 2nd clamp part, 14 ... Cutter mechanism part, 15 ... Control 16, drive switch, 16 b, power switch, 16 c, LED (orange, green), 17, slide base, 18, first clamp base, 19, first clamp member, 20, hinge shaft, 21, spring member , 22 ... V-groove, 23 ... pressing member, 24 ... magnet, 25 ... second clamp base, 26 ... second clamp member, 27 ... guide, 28 ... elastic member, 30 ... rotary blade, 31 ... rotary blade drive motor 32 ... driven member, 33 ... guide member, 34 ... cam member, 35 ... cam drive motor, 36 ... holder support, 37, 38 ... holder presser, 39 ... V groove base, 40 ... optical fiber holder, 41 ... holder Base 4 ... clamp member, 43 ... hinge shaft, 44 ... V groove, 45 ... elastic member, 46 ... magnet, 47 ... extension 48 ... groove, 49 ... positioning projection.

Claims (6)

A single-fiber optical fiber or a coating on the end of the optical fiber core is removed, tensile tension is applied to the exposed glass optical fiber, and the glass optical fiber is scratched with a scratching blade to a predetermined length. An optical fiber cutting device that cuts into a length, and clamps an exposed glass optical fiber portion and a first clamp portion that clamps the coated portion of the optical fiber strand or the optical fiber core wire from which the coating of the end portion is removed the second includes a clamp portion, the axis of the pressure to the wound edge to form a rotating blade of a circular given rotation by the drive motor, the exposed glass optical fiber portion while rotating the scratching blade by a drive motor optical fiber cutting apparatus characterized in that it comprises a cutter mechanism you scratching I feed vertically toward.   2. The optical fiber according to claim 1, wherein the first clamp portion is configured to be slidably biased in a direction away from the second clamp portion, and the second clamp portion is fixed. Cutting device.   3. The light according to claim 1, wherein the first clamp portion is configured to clamp the coated portion of the optical fiber strand or the optical fiber core wire by detachably attaching an optical fiber holder. Fiber cutting device.   4. The guide according to claim 1, further comprising: a guide provided with a V-shaped notch for guiding a tip portion of the glass optical fiber portion at an end of the second clamp portion. 5. The optical fiber cutting device described in 1. A single-fiber optical fiber or a coating on the end of the optical fiber core is removed, tensile tension is applied to the exposed glass optical fiber, and the glass optical fiber is scratched with a scratching blade to a predetermined length. An optical fiber cutting method for cutting an optical fiber strand or an optical fiber core wire from which an end coating is removed, a first clamp portion for clamping the coating portion, and an exposed glass optical fiber portion. After holding the second clamp portion to be clamped and applying tensile tension to the glass optical fiber, a circular rotary blade that is rotated by a drive motor is used for the scratching blade, and the scratching blade is driven by the drive motor. optical fiber cutting method comprising scratching to Rukoto I send perpendicularly towards the axis of the exposed glass optical fiber portion while rotating.   6. The light according to claim 5, wherein the optical fiber strand or the optical fiber core wire from which the coating of the end portion is removed is detachably held by the first clamp portion using an optical fiber holder. Fiber cutting method.

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