JP5065800B2 - Optical fiber cutting device - Google Patents

Description

  The present invention relates to an optical fiber cutting device that cuts an optical fiber by scratching the surface of a glass fiber portion of an optical fiber with a disk-shaped blade member.

As a method for cutting a silica-based optical fiber, a “stress rupture method” is known.
In this stress rupture method, an initial flaw is made on the surface of a glass fiber portion of an optical fiber with a very hard wound blade made of cemented carbide or diamond, and then bending stress is applied to the glass fiber portion. This is a method of obtaining a mirror surface on the fracture surface of the optical fiber by so-called cleavage, in which the optical fiber is broken by addition.

  According to this method, since the mirror surface can be formed in a short time without polishing the cut surface of the optical fiber with a grindstone or the like, it is effective for connection of a large number of optical fibers in an optical cable connection construction site or laboratory. .

An optical fiber cutting device for carrying out this stress rupture method has been developed in which a disk-shaped blade member is moved toward the glass fiber portion of the optical fiber to scratch the surface of the glass fiber portion. Has been.
However, in the case of the type in which the surface of the glass fiber portion of the optical fiber is scratched with the blade member in this way, when the sharpness of the blade member is lowered by repeated use, the fracture surface of the optical fiber is good when it is broken by cleavage. It will not be a specular surface
Therefore, the disk-shaped blade member is attached so that it can be freely rotated when tightened by the screw member, and before the sharpness is reduced, the operator of the device loosens the blade member and removes the blade member from the circle. There has been proposed a structure in which the contact area with the glass fiber portion can be renewed by appropriately rotating around the center of the plate.

  However, the rotation operation of the blade member for updating the contact area with the glass fiber portion is a heavy burden on the operator, and the frequency of update tends to vary depending on the operator, and the contact area of the blade member should be updated. There was also a problem that it was difficult to optimize.

In order to prevent such a problem, an optical fiber cutting device shown in FIGS. 13A and 13B has been proposed.
An optical fiber cutting device 100 shown here is disclosed in Patent Document 1 below, and includes a pair of upper and lower clamp members 104 and 105 that hold a glass fiber portion 103 from which the coating of the optical fiber 102 has been peeled, and these clamps. A disk-shaped blade member 107 that moves below the glass fiber portion 103 fixed by the members 104 and 105 to scratch the outer peripheral surface of the glass fiber portion 103, and a support frame 109 that rotatably supports the blade member 107. And a pillow member 111 that can be moved up and down above the glass fiber portion 103 and applies a bending load to the upper surface of the glass fiber portion 103, and is fixed by the clamp members 104 and 105. After being scratched by the blade member 107, the glass member 103 is bent by the pillow member 111. By applying a weight to obtain a fracture surface by cleaving of the optical fiber.

  In the case of the optical fiber cutting device 100, as shown in FIG. 13B, a gear 113 is integrally provided on the side surface of the blade member 107, and the gear 113 is provided with a first leaf spring for driving the gear. 115 and the second leaf spring 117 for preventing the gear reverse rotation is engaged.

  When the pillow member 111 is lowered, the first leaf spring 115 is pushed down by the operation pin 119 fixedly provided at the base end of the pillow member 111, and rotates the gear 113 in the direction of arrow R in the figure by a predetermined angle. Since the gear 113 is integrated with the blade member 107, the blade member 107 rotates at a certain angle integrally with the gear 113, and the contact area with the glass fiber portion 103 is updated.

  That is, in the optical fiber cutting device 100 shown in FIG. 13, the blade member 107 automatically rotates by a certain angle in conjunction with the lowering operation of the pillow member 111 for cleaving the wound glass fiber portion 103, Since the contact area with respect to the glass fiber portion 103 is updated, the contact area of the blade member can be updated without imposing a burden on the handler, and it is also possible to reduce variation in the frequency of the update.

JP-A-6-186436

By the way, in the above-described optical fiber cutting device 100, the blade member 107 is rotated by a certain angle, for example, every 12 equal parts of the circumference, and the part in contact with the glass fiber part 103 is updated. Due to the workability and processing cost of the gear 113 used to rotate the blade member 107, the fixed angle for rotating the blade member 107 cannot be reduced so much.
Eventually, in the conventional optical fiber cutting device 100, the length of the contact area to be updated at a time is increased, and the number of times that the contact area of the blade member 107 can be updated is limited. There was a problem that it was difficult to extend.

  An object of the present invention relates to solving the above-mentioned problem, and can update the contact area with the glass fiber portion of the blade member automatically without imposing a burden on the operator, and further update the contact area. It is an object to provide an optical fiber cutting device in which the amount of rotation of the blade member can be set arbitrarily small and the life of the blade member can be improved.

The above object of the present invention is achieved by the following configuration.
(1) An optical fiber cutting device that cuts an optical fiber by moving a disk-shaped blade member toward the glass fiber portion of the optical fiber and scratching the surface of the glass fiber portion,
The blade member includes a gear attached integrally, and rotates when the gear member comes into contact with the arm member fixedly provided in the middle of the moving path of the blade member, thereby providing a contact area with the glass fiber portion. An optical fiber cutting device which is renewed.

According to the said structure, when an arm member contacts with a gear at the time of movement of a blade member , a blade member rotates and the contact area with the glass fiber part of a blade member is updated automatically.
Therefore, the contact area with the glass fiber portion of the blade member can be automatically updated without placing a burden on the operator.

(2) The optical fiber cutting device according to (1 ), wherein the arm member includes an elastic member.

If it does in this way, rotation of a blade member can be ensured because an arm member elastically contacts with a gear at the time of movement of a blade member.

( 3 ) One end of the arm member is pivotally attached to a position adjusting mechanism, and the other end is supported so as to be swingable in a direction approaching or moving away from the position adjusting mechanism . light

(4) The optical fiber cutting device according to any one of (1) to (3), wherein the arm member is fixed via a position adjusting mechanism .

If comprised in this way, it will become possible to adjust the contact pressure or contact length between the arm member and gear by a position adjustment mechanism to arbitrary values, and adjustment of the amount of rotation of a blade member will be performed reliably and with high accuracy. can do.

(5) The optical fiber cutting device according to any one of (1) to (4), wherein a cleaning unit that cleans the surface of the blade member is provided in the middle of the movement path of the blade member.

As a result, even if chips generated during the wound of the glass fiber portion adhere to the blade member, the chips attached to the blade member are removed before the next wound treatment by cleaning by the cleaning means. Chips remaining on the top will not affect the next wound treatment.

(6) The blade member is reciprocated, rotated in a forward path, and scratched on the surface of the glass fiber portion without rotating in a return path, according to any one of (1) to (5) Optical fiber cutting device.

(7) The optical fiber cutting device according to any one of (1) to (6), wherein the blade member is provided with a mark that makes the rotation state of the blade member visible.

With the configuration as this, that at the time of rotation of the blade member in conjunction with the movement of the blade member, since the mark provided on the blade member is moved, update of the contact area due to the rotation of the blade member is made to suitability It can be easily confirmed by visual observation, and the adjustment work of the rotation amount of the blade member in conjunction with the movement of the blade member is facilitated.

  According to the optical fiber cutting device of the present invention, the contact area of the blade member with the glass fiber portion is automatically updated by the rotation of the blade member that is interlocked with the movement of the blade member. Therefore, the contact area with the glass fiber portion of the blade member can be updated without imposing a burden on the handler.

Hereinafter, a reference example of an optical fiber cutting device according to the present invention will be described in detail with reference to the drawings.
1 is an external perspective view showing a reference example of an optical fiber cutting device according to the present invention, FIG. 2 is a plan view of the device main body of the optical fiber cutting device shown in FIG. 1, and FIG. FIG. 4 is an explanatory view of the operation of scratching the glass fiber portion with the blade member shown in FIG.

As shown in FIG. 1, the optical fiber cutting device 1 of this reference example is rotated via a hinge member 7 at a lower box 5 provided with a disk-shaped blade member 3 and one end of the lower box 5. It is comprised from the upper box body 9 connected freely.

On the upper surface of the lower box 5, as shown in FIG. 1, a fiber placement portion 19 for positioning the fiber holder 17 that holds the optical fiber 15 is provided.
The fiber holder 17 includes a substrate 21 that supports the optical fiber 15 from below, and a pressing plate 22 that presses the optical fiber 15 against the substrate 21.
The fiber mounting portion 19 is such that the glass fiber portion 16 exposed at the tip of the optical fiber 15 held by the fiber holder 17 moves the blade member 3 on the lower box 5 (the path indicated by the arrow X shown in FIG. 2). The fiber holder 17 is positioned so as to cross.

A support frame 11 that rotatably supports the disk-shaped blade member 3 is supported on the lower box 5 so as to be movable in the direction indicated by the arrow X in FIG. As shown in FIG. 4A, when the one end surface 11a exposed on the side surface of the lower box 5 is pressed, the support frame 11 slides along the pressing direction to move the blade member 3 integrally. .
On the other end side of the support frame 11, as shown in FIG. 4, a spring member 13 that urges the support frame 11 in the direction of pushing back is provided.

As shown in FIG. 4 (b), the support frame 11 exceeds the wound position (position where the blade member 3 comes into contact with the glass fiber portion 16 of the optical fiber 15 described later and attaches the wound) P as shown in FIG. Then, a locking mechanism (not shown) provided in the lower box 5 is engaged and fixed at that position.
After the blade member 3 is fixed beyond the wound position P as shown in FIG. 4 (b), the fiber holder 17 holding the optical fiber 15 is placed on the fiber as shown in FIG. 4 (c). Set in the placement unit 19. By this setting, the glass fiber portion 16 is positioned at the wound position P.

  When the upper box body 9 is closed from the state shown in FIG. 4C (that is, the upper box body 9 is rotated toward the lower box body 5 and pressed against the upper surface of the lower box body 5), the upper box body 9 A disengagement piece (not shown) mounted on the disengages the support frame 11 and the locking mechanism. As a result, the support frame 11 is moved back to the original position at once by the urging force of the spring member 13. By the movement of the blade member 3 at this time, the blade of the blade member 3 comes into contact with the glass fiber portion 16 and the glass fiber portion 16 is wound 24.

In the case of the optical fiber cutting device 1 of the present reference example , the contact area of the blade member 3 with the glass fiber portion 16 is updated by rotating the blade member 3 in conjunction with the movement of the blade member 3 for the wound operation. .
The mechanism for rotating the blade member 3 in conjunction with the movement of the blade member 3 is as follows.

  The rotation linked to the movement of the blade member 3 is caused by the contact friction caused by the contact between the contact member 27 and the blade member 3 that are fixedly installed in the movement path of the blade member 3 when the blade member 3 is moved for the wound operation. Realized by force.

  The contact member 27 is made of a rubber material having a large friction coefficient, and is fixed to the casing of the lower box body 5 via a position adjusting mechanism 28 provided in the middle of the moving path of the blade member 3.

As shown in FIGS. 2 and 3, the blade member 3 includes a feed roller 31 that contacts the contact member 27 and rotates by receiving a contact friction force, and the feed roller 31 is rotated only in one direction. A one-way clutch 33 that transmits the rotational force of 31 to the blade member 3 to cause the blade member 3 to rotate is provided.
In the case of this reference example , the one-way clutch 33 is built in the inner peripheral portion of the feed roller 31, and the output shaft of the one-way clutch 33 is fixed to the central axis of the blade member 3.

The position adjustment mechanism 28 is a plate member having a contact member 27 fixed on the upper surface, and the blade member perpendicular to the rotation axis direction of the disk-shaped blade member 3 (Y direction in FIG. 2) and the rotation axis of the blade member 3. 3 in the three moving directions (X direction in FIG. 2) and three directions orthogonal to both the rotation axis of the blade member 3 and the moving direction of the blade member 3 (Z direction in FIG. 3). The position of the contact member 27 with respect to the feed roller 31 is adjusted by adjusting the position of the position adjusting mechanism 28 in the X, Y, and Z directions. , Y, Z can be adjusted in position.
When the contacted position of the contact member 27 with respect to the feed roller 31 is adjusted, the contact area and the contact pressure between the feed roller 31 and the contact member 27 change, and the contact friction between the feed roller 31 and the contact member 27 is changed. The size can be adjusted.

In the case of this reference example , as shown in FIG. 4, the equipment position of the contact member 27 is set to a position shifted from the wound position P by a predetermined distance in the moving direction of the blade member 3. Therefore, rotation of the blade member 3 due to contact friction with the contact member 27 is performed at a position where the feed roller 31 deviates from the wound position P passing through the wound position P by pressing the support frame 11.

Furthermore, in the optical fiber cutting device 1 of the present reference example , as shown in FIG. 4D, the blade member 3 comes into contact with the blade member 3 in the middle of the return path of the blade member 3, and the surface of the blade member 3. Cleaning means 35 is provided for cleaning.
The cleaning means 35 is attached to the upper box body 9, and when the upper box body 9 is closed, the cleaning means 35 protrudes into the moving path of the blade member 3, and wipes the surface of the blade member 3 by the contact of brush bristles or nonwoven fabric. To do.

In the optical fiber cutting device 1 described above, the blade member 3 rotates in conjunction with the moving operation of the blade member 3 for attaching the wound 24 to the glass fiber portion 16, and the glass fiber portion 16 of the blade member 3 is connected. The contact area is automatically updated.
Therefore, the contact area of the blade member 3 with the glass fiber portion 16 can be automatically updated without placing a burden on the handler.

Further, in the optical fiber cutting device 1 of the present reference example , the rotation of the blade member 3 is performed when the blade member 3 is moved for the wound operation and the contact member 27 and the blade fixedly installed in the movement path of the blade member 3. This is realized by a contact frictional force generated by contact with the member 3.
Further, the blade member 3 is in contact with the contact member 27 and receives a contact friction force, and the rotational force of the feed roller 31 is transmitted to the blade member 3 only when the feed roller 31 rotates in one direction. And a one-way clutch 33 that causes the blade member 3 to rotate.

Therefore, the contact member 27 contacts the feed roller 31 in the forward path and the return path when the blade member 3 for attaching the wound 24 to the glass fiber portion 16 is moved, but either of the forward path or the return path is provided by the one-way clutch 33. The blade member 3 rotates only at one time. Therefore, even if the direction of the contact frictional force acting between the contact member 27 and the feed roller 31 is reversed between the forward path and the return path, the blade member 3 does not rotate and the blade is properly rotated in one direction. The member 3 can be rotated.
Further, by selecting the operating direction of the one-way clutch 33, it is possible to determine whether the blade member 3 is rotated in the forward path or the backward path.

In the above reference example , the blade member 3 is rotated in the forward path, so that the rotation by the contact friction of the feed roller 31 is surely performed. However, the blade member 3 is returned in the return path by the biasing force of the spring member 13. The blade member 3 may be rotated during the movement. However, in such a configuration, the contact member 27 is further imparted with an elastic force to the feed roller 31 by a leaf spring or the like in order to obtain a reliable contact frictional force even with a single movement due to the spring biasing force of the feed roller 31. It is desirable that

Further, in the optical fiber cutting device 1 of the present reference example , the contact member 27 is fixed in the middle of the movement path of the blade member 3 via a position adjusting mechanism 28 that adjusts the contact friction with the feed roller 31. The amount of rotation of the blade member 3 can be adjusted to be small by adjusting the size of the contact friction by the position adjusting mechanism 28.
Thereby, the frequency | count of possible renewal of the contact area of the blade member 3 can be increased, and the lifetime of the blade member 3 can be improved.

Further, in the optical fiber cutting device 1 of the present reference example , the position adjusting mechanism 28 includes the rotation axis direction of the blade member 3 (Y direction in FIG. 2), the moving direction of the blade member 3 (X direction in FIG. 2), and The position of the contact member 27 can be adjusted in three directions that are orthogonal to both the rotational axis of the blade member 3 and the moving direction of the blade member 3 (the Z direction in FIG. 3).

  Therefore, by adjusting the position of the contact member 27 in the direction of the rotation axis of the blade member 3, the contact width between the contact member 27 and the feed roller 31 can be adjusted to an arbitrary value. By adjusting the position of the blade member 3 in the moving direction, the contact length between the contact member 27 and the feed roller 31 can be adjusted to an arbitrary value. It is possible to adjust the contact pressure between the contact member 27 and the feed roller 31 to an arbitrary value by adjusting the position in a direction orthogonal to both the movement direction of the blade member 3 and the blade member 3. By combining these three-direction position adjustments by the position adjustment mechanism 28, the adjustment range of the contact friction force acting between the contact member 27 and the feed roller 31 is increased, and at the same time, the contact friction force is finely adjusted. For example, it is possible to set the rotation amount of the blade member for updating the contact area as small as necessary, thereby further improving the life of the blade member. Further, it is possible to recover the decrease in the contact frictional force accompanying the wear of the contact member 27.

The preferable amount of rotation when the contact area of the blade member 3 is updated is 5 degrees for each update in consideration of the blade span length associated with the contact with the glass fiber portion 16 and the life of the blade member 3. To an appropriate value within the range of 35 to 35 degrees. Thus, if the amount of rotation of the blade member 3 with respect to one update is restricted, the length of the contact area to be updated at one time is not excessive, and the update process can be performed 10 to 72 times. The lifetime of the blade member can be reliably extended by renewal.
Specifically, for example, when the blade member 3 is set to rotate by 15 degrees with respect to one update, the update process can be performed 24 times, while maintaining the sharpness by the blade member 3 favorably, The life of the blade member can be extended.

Further, in the optical fiber cutting device 1 of the present reference example, the blade member 3 is rotated by contact friction with the contact member 27 at a position away from the wound position P on the glass fiber portion 16 by the blade member 3.
Therefore, the contact between the blade member 3 and the glass fiber portion 16 at the wound position P is performed in a state in which the blade member 3 is stationary. Can be reduced.

Further, in the optical fiber cutting device 1 of the present reference example , as shown in FIG. 4D, the blade member 3 is brought into contact with the blade member 3 in the middle of the movement path of the blade member 3 to clean the surface of the blade member 3. Cleaning means 35 is provided.
Therefore, even if chips generated at the time of wounding of the glass fiber portion 16 adhere to the blade member 3, the chips attached to the blade member 3 are removed by the cleaning by the cleaning means 35 before the next wound treatment. The chips remaining on the blade member 3 do not affect the next wound treatment.

Next, a first embodiment of an optical fiber cutting device according to the present invention will be described.
FIG. 5 is a plan view of the apparatus main body according to the first embodiment of the optical fiber cutting apparatus according to the present invention, and FIG. 6 is a view taken in the direction of arrow B in FIG.

Optical fiber cutting device 1A of this first embodiment, except for the mechanism for rotating the blade member 3 in synchronization with the movement of the blade member 3, other configuration is the same as the previous embodiment, same portions The same parts are denoted by the same reference numerals and the description thereof is omitted.
In this embodiment, the rotation that is interlocked with the movement of the blade member 3 includes a gear 37 that is integrally attached to the blade member 3, and an arm that is fixedly installed in the middle of the movement path of the blade member 3 and is in surface contact with the gear 37. This is realized by the member 39.

  In the gear 37, irregularities 41 are continuously formed in a circumferential direction on a ring-shaped outer peripheral surface, and a projection (not shown) that protrudes from a surface facing the blade member 3 is a flat surface corresponding to the blade member 3. It is integrated with the blade member 3 by being fitted into a hole (not shown) formed in the above.

  The blade member 3 with which the gear 37 is integrated is rotatably attached to the support frame 11 with a screw 43 inserted through the center thereof. Also, a disc spring 45 is inserted into the screw 43, and the blade member 3 is mounted by being pressed against the support frame 11 by the disc spring 45 with a pressing force in the range of 1 to 3 kgf. And the mounting accuracy of the blade member 3 is ensured by this pressing force. However, if the pressing force is too high due to the tightening of the screw 43, the blade member 3 becomes difficult to rotate, and if it is too loose, the blade member 3 rotates easily, so that the above range is defined.

The arm member 39 is disposed on the position adjustment mechanism 28, one end is pivotally attached to the position adjustment mechanism 28, and the other end is supported so as to be swingable in a direction approaching or moving away from the position adjustment mechanism 28.
The arm member 39 is urged in the range of a spring load of 78 to 100 gf by a compression spring 47 that is an elastic member interposed between the arm member 39 and the position adjustment mechanism 28 on the other end side that swings, and is applied to the gear 37. The elastic contact is provided.

  At this time, the urging force of the compression spring 47 is such that the gear 37 rotates in contact with the arm member 39 in the forward path when the blade member 3 moves, and the top of the irregularities 41 of the rotated gear 37 contacts the arm member 39. When the member 39 is pressed down most (when the compression spring 47 is compressed most), the size is set so as to suppress the rotation of the gear 37. In the return path of the blade member 3, the state where the gear 37 does not rotate is maintained, so that the glass fiber portion is damaged in the contact area of the blade member 3 updated in the forward path. Note that the rotation of the gear 37 cannot be reliably suppressed only by adjusting the urging force of the compression spring 47. Therefore, the rotation may be controlled by adjusting the pressing force of the blade member 3 against the support frame 11 together.

  It should be noted that the rotation amount of the blade member 3 is changed for each gear 37 by changing the pitch of the projections and depressions 41 of the gear 37, or the rotation amount of the blade member is changed by discontinuously changing the pitch of one gear 37. It can also be.

Also in this case, the amount of rotation when updating the contact area of the blade member 3 is set to an appropriate value within the range of 5 degrees to 35 degrees for one update, as in the case of the previous reference example. By doing so, the length of the contact area to be updated at one time does not become excessive, and it is possible to ensure a sufficient value for the number of times that the update process can be performed, thereby extending the life of the blade member.

In the optical fiber cutting device 1A described above, the one-way clutch used in the previous reference example can be omitted, and the device can be simplified and the manufacturing cost can be reduced.
In the optical fiber cutting device 1A of the present embodiment, the rotation of the blade member 3 is caused by the gear 37 integrated with the blade member 3 and the arm member 39 fixedly arranged in the middle of the movement path of the blade member 3. Realized by contact or elastic contact, the blade member 3 is reliably rotated.

Further, in the reference example and the embodiment described above, the blade member 3 rotates in the forward path at the time of movement, and in the return path, the surface of the glass fiber portion is scratched in the updated contact area, so that the blade member 3 contacts. Since the area is renewed every time immediately before the glass fiber part is scratched, it is always possible to scratch with a fresh sharpness.

A specific structure for fixing the blade member 3 of the gear 37 shown in the first embodiment is not limited to the structure shown in the first embodiment.
Below, 2nd - 4th embodiment which improved the fixation structure to the blade member 3 of the gear 37 shown in 1st Embodiment is demonstrated in order.

FIG. 7 is a plan view of the main part of the apparatus main body according to the second embodiment of the optical fiber cutting apparatus according to the present invention, and FIG. 8 is a view taken along arrow C in FIG.

Optical fiber cutting device 1B of the second embodiment is an improvement of the structure for fixing the blade member 3 of the gear 37 shown in the first embodiment described above, other configuration of the second it It is the same as that of the embodiment, and the same parts and the same parts are denoted by the same reference numerals and description thereof is omitted.

In this embodiment, a circular counterbore 51 in which the gear 37 is fitted and positioned on the flat portion of the surface of the blade member 3, and a non-rotating pin 53 protruding from the bottom surface of the counterbore 51 toward the gear 37 side. And are provided. The circular counterbore 51 restricts the movement of the gear 37 fitted to the counterbore 51 in the direction orthogonal to the central axis.
As shown in FIG. 8, the non-rotating pin 53 is fitted between the concave and convex portions 41 of the gear 37 fitted to the counterbore 51 and restricts the rotation of the gear 37 fitted to the counterbore 51.
An adhesive is applied to the contact surface between the gear 37 and the spot facing 51.

In other words, in the case of the second embodiment, the gear 37 has an adhesive strength by the adhesive, a position regulating force in the direction perpendicular to the central axis by the counterbore 51, and the engagement between the anti-rotation pin 53 and the unevenness 41. The blade member 3 is fixed and integrated with the anti-rotation mechanism.

FIG. 9 is a plan view of the main part of the apparatus main body according to the third embodiment of the optical fiber cutting apparatus according to the present invention, and FIG.

The optical fiber cutting device 1C of the third embodiment is obtained by further improving the structure for fixing the gear 37 to the blade member 3 shown in the second embodiment, and the other configurations are the first. and is the same as the second embodiment, same portions, the same position is described bear the same numbers will be omitted.

In this embodiment, a circular counterbore 51 in which the gear 37 is fitted and positioned on the flat portion of the surface of the blade member 3, and a locking pin 54 that protrudes from the bottom surface of the counterbore 51 toward the gear 37 side. And are provided. The circular counterbore 51 restricts the movement of the gear 37 fitted to the counterbore 51 in the direction orthogonal to the central axis.
As shown in FIGS. 9 and 10, the rotation prevention pin 54 is fitted into the engagement hole 55 provided in the gear 37 fitted to the counterbore 51, and the rotation of the gear 37 fitted to the counterbore 51 is rotated. To regulate.
An adhesive is applied to the contact surface between the gear 37 and the spot facing 51.

That is, in the case of the third embodiment, the gear 37 has an adhesive strength by the adhesive, a position regulating force in the direction perpendicular to the central axis by the counterbore 51, the rotation pin 54, and the engagement hole 55. It is fixed and integrated with the blade member 3 by detent by fitting.

FIG. 11 is a plan view of the main part of the apparatus main body according to the fourth embodiment of the optical fiber cutting apparatus according to the present invention, and FIG. 12 is a view taken along arrow E in FIG.

The optical fiber cutting device 1D of the fourth embodiment is obtained by further improving the structure for fixing the gear 37 to the blade member 3 shown in the second embodiment, and the other configuration is the first. and is the same as the second embodiment, same portions, the same position is described bear the same numbers will be omitted.

In this embodiment, a circular counterbore 51 in which the gear 37 is fitted and positioned in the flat portion of the surface of the blade member 3, and a screw insertion hole formed through the counterbore 51 from the back surface side of the blade member 3. 56 is formed. The circular counterbore 51 restricts the movement of the gear 37 fitted to the counterbore 51 in the direction orthogonal to the central axis.
A male screw 57 is inserted into the screw insertion hole 56 from the back surface side of the blade member 3, and the male screw 57 is screwed into a female screw portion 58 formed through the gear 37 so that the gear 37 fitted into the counterbore 51 is engaged. Regulate rotation.

That is, in the case of the fourth embodiment, the gear 37 has the blade member 3 by the position restricting force in the direction perpendicular to the central axis by the counterbore 51 and screwing by the screwing of the male screw 57 and the female screw portion 58. It is fixed and integrated in
In the fourth embodiment, the state in which the gear 37 is in close contact with the bottom surface of the counterbore 51 can be obtained by the tightening force of the male screw 57, so that reinforcement with an adhesive can be omitted.

Furthermore, in the fourth embodiment, as shown in FIG. 12, marks 61 that make the rotational state visible are provided at a plurality of locations on the blade member 3 that are spaced apart in the circumferential direction.
In the illustrated example, the marks 61 are provided at eight positions at equal intervals in the circumferential direction (at intervals of 45 degrees on the circumference). However, the distance between the marks 61 is not limited to this, for example, 20 to 45 degrees. It is good to set to the appropriate value of the range.

  When the mark 61 is provided as described above, the mark 61 provided on the blade member is not shown in the lower box 5 (see FIG. 1) when the blade member 3 rotates in conjunction with the movement of the blade member 3. Therefore, it is easy to visually check that the contact area is properly updated by the rotation of the blade member, and the amount of rotation of the blade member in conjunction with the movement of the blade member The adjustment work etc. becomes easy. Further, as the mark 61, instead of the triangular mark as shown in the figure, for example, a number that changes in ascending order or descending order may be engraved to clarify the usage amount or remaining usage amount of the blade member 3.

It is a perspective view which shows schematic structure of the reference example of the optical fiber cutting device which concerns on this invention. It is a top view of the apparatus main body of the optical fiber cutting device shown in FIG. FIG. 3 is a view as seen from an arrow A in FIG. 2. It is explanatory drawing of the operation | movement which makes a glass fiber part a wound with a blade member. It is a top view of the apparatus main body of 1st Embodiment of the optical fiber cutting device which concerns on this invention. FIG. 6 is a view taken in the direction of arrow B in FIG. 5. It is a top view of the principal part of the apparatus main body of 2nd Embodiment of the optical fiber cutting device which concerns on this invention. It is C arrow line view of FIG. It is a top view of the principal part of the apparatus main body of 3rd Embodiment of the optical fiber cutting device which concerns on this invention. It is a D arrow line view of FIG. It is a top view of the principal part of the apparatus main body of 4th Embodiment of the optical fiber cutting device which concerns on this invention. It is E arrow line view of FIG. (A) is a perspective view of the principal part of the conventional optical fiber cutting device, (b) is an explanatory view of a mechanism for updating the contact area by rotating the blade member shown in (a).

1, 1A, 1B, 1C, 1D Optical fiber cutting device 3 Blade member 5 Lower box body 7 Hinge member 9 Upper box body 11 Support frame 13 Spring member 15 Optical fiber 16 Glass fiber portion 17 Fiber holder 19 Fiber mounting portion 21 Substrate 22 Presser plate 27 Contact member 28 Position adjustment mechanism 31 Feed roller 33 One-way clutch 35 Cleaning means 37 Gear 39 Arm member 41 Concavity and convexity 45 Belleville spring 47 Compression spring 51 Counterbore 53 Anti-rotation pin 54 Anti-rotation pin 55 Engagement hole 56 Screw insertion Hole 57 Male thread 58 Female thread 61 Mark

Claims (1)

An optical fiber cutting device that cuts an optical fiber by moving a disk-shaped blade member toward the glass fiber portion of the optical fiber and scratching the surface of the glass fiber portion,
The blade member is integrally provided with a gear continuously having irregularities on a ring-shaped outer peripheral surface,
One end is pivotally attached to the position adjustment mechanism in the middle of the movement path of the blade member, and the other end swings via a compression spring.
An arm member supported freely,
The cutting member is reciprocated and rotated by said arm member in the middle of the forward movement path and the gear are in contact, to update the contact area between the glass fiber portion, backward by the urging force of the spring member An optical fiber cutting device characterized by scratching the surface of the glass fiber portion without rotating in the middle of the movement path .

Images