JP2009244403A - Optical fiber cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an optical fiber cutting device which eliminates a need of work of changing a blade rotation position. <P>SOLUTION: The optical fiber cutting device includes a clamp grasping an optical fiber, a slide member which is moved in a direction crossing a lengthwise direction of the optical fiber and has a disk-like blade for notching the optical fiber, a pressing member which presses the optical fiber from a side opposite to the notch to cut the optical fiber, a lever for performing a series of operations from notching to cutting, and a driving mechanism which moves the slide member to sequentially execute notching and cutting of the optical fiber. The slide member 30 has a pinion 32c which is attached to a support shaft 32a of the blade 32 through a one-way clutch 32b and is turned by a rack 36 disposed in the vicinity of the slide member, and the pinion is turned by the rack 36 to rotate the disk-like blade at a prescribed angle after the optical fiber is notched. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an optical fiber cutting device.

  2. Description of the Related Art Conventionally, an optical fiber cutting device that cuts an end surface of an optical fiber into a mirror surface is used for fusion splicing of optical fibers (see, for example, Patent Document 1). When cutting an optical fiber with this optical fiber cutting device, hold both sides of the cutting position of the optical fiber from which the coating has been removed with a clamp, and move the slide member attached with a disk-shaped blade in a direction perpendicular to the fiber axis And scratch the cutting position. Next, the optical fiber is pressed from the opposite side of the scratched position, and the optical fiber is cut into a mirror surface along the cleavage plane at the scratched portion.

JP 2001-296430 A

  By the way, since the blade is worn by scratching the optical fiber, the optical fiber cutting device needs to change the circumferential position of the blade by rotating the disk-shaped blade every predetermined number of times of use. However, there is a problem that the operation of changing the rotational position of the blade is complicated.

  The present invention has been made in view of the above, and an object of the present invention is to provide an optical fiber cutting device that eliminates the need to change the rotational position of the blade.

  In order to solve the above-described problems and achieve the object, an optical fiber cutting device of the present invention moves in a direction intersecting the longitudinal direction of the optical fiber and a plurality of clamps for gripping the optical fiber, A slide member having a disk-shaped blade for scratching the optical fiber between a plurality of clamps, a pressing member for pressing and cutting the optical fiber from the opposite side of the scratch, and from scratching the optical fiber to cutting A lever that performs a series of operations, and a drive mechanism that is driven by the lever and moves the slide member to sequentially perform scratching and cutting of the optical fiber, and the optical fiber is operated by the lever operation. The slide member is attached to a support shaft of the disk-shaped blade via a one-way clutch, A rotating member that is rotated by a driving unit disposed in the vicinity of the ride member, and the rotating member is rotated by the driving unit after scratching the optical fiber, and the disc shape The blade is rotated by a predetermined angle.

  In the optical fiber cutting device of the present invention, the predetermined angle is not a divisor of 360 °.

  In the optical fiber cutting device according to the present invention, in the above invention, the driving means is a rack, and the rotating member is a pinion that is disposed along the sliding direction of the slide member and meshes with the rack. It is characterized by being.

  In the optical fiber cutting device according to the present invention, in the above invention, the driving means is a friction member disposed along a sliding direction of the slide member, and the rotating member is pressed against the friction member. It is a roller.

  Further, the optical fiber cutting device according to the present invention is the above-described invention, wherein the driving means is a claw disposed on the sliding direction end side of the slide member when the optical fiber is scratched by the disk-shaped blade. It is a member, The said rotation member is a claw wheel rotated one or more teeth by the said nail | claw member, It is characterized by the above-mentioned.

  In the optical fiber cutting device of the present invention, the slide member has a rotation member attached to the support shaft of the disk-shaped blade via a one-way clutch, and the rotation member is a drive disposed in the vicinity of the slide member. After turning the optical fiber and scratching the optical fiber, it is rotated by the driving means to rotate the disk-shaped blade by a predetermined angle, so that the rotation operation of the blade is incorporated into the work of cutting the optical fiber. There is an effect that the operation of changing the rotational position of the blade can be made unnecessary.

(Embodiment 1)
Hereinafter, a first embodiment of the optical fiber cutting device of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a state in which a lid is opened in the optical fiber cutting device of the present invention. FIG. 2 is a perspective view showing a state in which the lid of the optical fiber cutting device of FIG. 1 is closed. FIG. 3 is a perspective view showing a state in which the optical fiber cutting device of FIG. 2 is held with one hand.

  The optical fiber cutting device 1 is a device for cutting the end face of an optical fiber into a mirror shape when the optical fiber is fusion spliced or the like, and as shown in FIG. The clamps 8 to 11 gripped at two points, the pressing member 12 that presses and cuts the damaged optical fiber, the operating lever 20, the slide member 30 having the blade 32, and the recovered optical fiber waste in the collection box 51. The operation lever 20 performs a series of operations from the cutting of the optical fiber to the recovery of the optical fiber debris.

  When the optical fiber cutting device 1 cuts the optical fiber, after setting the holder H (see FIG. 1) holding the optical fiber in the concave groove 3b of the main body 3, the lid 5 is closed as shown in FIG. The arm member 6 is closed in conjunction with the lid 5. The optical fiber cutting device 1 is used by gripping the hand-held portion 7 by hand (see FIG. 3), but may be used by placing it on a work table or the like. At this time, when the optical fiber cutting device 1 closes the lid 5, the clamps 8 and 9 provided on the main body 3 side and the clamps 10 and 11 provided on the lid 5 side grip the optical fiber. Next, when the pressing operation portion 20a of the operation lever 20 is pushed down, the slide member 30 in FIG. 1 is moved from the near side to the far side, and the lower portion of the optical fiber is damaged and then the damaged portion Is pressed from above by the pressing member 12, and the optical fiber is cut (the end face of the optical fiber is substantially mirror-like).

  Thus, the optical fiber cutting operation includes (1) setting the holder H holding the optical fiber at a predetermined position (concave groove 3b), (2) closing the lid 5 of the optical fiber cutting device 1, ( 3) The operation lever 20 is operated in three operations, whereby the optical fiber is cut. That is, after the lid 5 is closed, the optical fiber is cut only by operating the operation lever 20.

  When the optical fiber cutting device 1 cuts the optical fiber and then pushes down the pressing operation portion 20a of the operation lever 20 further downward, the holding of the optical fiber by the clamps 8 to 11 is released and the feed roller 55d The collection mechanism 50 having the driven roller 6 a is operated, and the cut optical fiber waste is collected in the collection box 51. Hereinafter, the configuration of the optical fiber cutting device 1 will be described in more detail. In addition to the above, the optical fiber cutting device 1 is operated by the operation lever 20 to move the slide member 30 in a direction orthogonal to the optical fiber. A drive mechanism 40 is provided.

  As shown in FIG. 1, the housing 2 includes a main body 3, a base 4 (see FIG. 4 and the like), a lid 5, an arm member 6, and a hand-held portion 7.

  As shown in FIG. 1, the main body 3 has a holder base 3a on one side and a recovery box 51 on the other side, and clamps 8 and 9 are provided therebetween. The main body 3 is provided with a support wall 3c on the front side where the holder base 3a is disposed and a support bracket 3d on the back side. The holder base 3a has a concave groove 3b formed on the upper surface along the longitudinal direction. A holder H (see FIG. 1) that holds a single-core or multi-core optical fiber to be cut is detachably disposed in the concave groove 3b. The holder H is obtained by connecting two parts made of a magnetic material with a hinge, and holds the optical fiber between the two parts by a magnetic force. For this reason, a magnet may be provided in the concave groove 3b to hold the holder H with a magnetic force, or it may be sandwiched between a plunger or an elastic body. Further, the main body 3 is formed with an opening 3e between the clamps 8 and 9 in which the slide member 30 is movably disposed. Here, in the main body 3, an arrangement opening 3g is formed in the bottom plate 3f, and a base 4 is screwed to the arrangement opening 3g (see FIG. 6). In addition, the main body 3 has a rubber foot G (see FIG. 6) having a bottom surface 3f formed on a flat surface in consideration of using the optical fiber cutting device 1 on a work table or the like and having a frictional property at an appropriate place. Is attached). At this time, the main body 3 may not have the rubber feet G, and the bottom plate 3f made of a flat surface may be directly placed on a work table or the like.

  As shown in FIG. 4, a slide member 30 is installed on the upper surface of the base 4, and the slide member 30 slides along the upper surface of the base 4 by the drive mechanism 40. The geared lever 52 and the recovery mechanism 50 operated by the operation lever 20 are operated by a gear transmission mechanism. When the base 4 is screwed to the arrangement opening 3g, the slide member 30 is movably arranged between the clamps 8 and 9, and the upper part projects from an opening 3e formed in the main body 3 as shown in FIG. . As shown in FIG. 4, the base 4 is provided with stoppers 4 a and 4 b for regulating the movement position and the return position of the slide member 30 on the upper surface.

  As shown in FIG. 1, the lid 5 is supported by a rotary shaft 13 attached to a support bracket 3 d of the main body 3 so as to be opened and closed, and is attached to the holder base 3 a side of the main body 3. The lid 5 is formed with a protruding piece 5a that opens and closes on the front side. The protruding piece 5a is provided with a catcher 5b and an engaging groove 5c formed into a concave groove on the lower surface. The catcher 5b engages with a magnet 3h provided on the upper surface of the support wall 3c, and holds the lid 5 closed by magnetic force. The lid 5 is provided with an elastic body 5d, clamps 10 and 11, and a pressing member 12 on the lower surface. The elastic body 5d is made of rubber or the like, and is provided at a position corresponding to the holder base 3a. The clamps 10 and 11 are provided at positions corresponding to the clamps 8 and 9 of the main body 3. Here, the lid 5 is provided with a pin (not shown) protruding on the side surface on the side of the arm member 6, and is connected to the arm member 6 by this pin.

  The arm member 6 constitutes a part of the recovery mechanism 50 and is supported together with the lid 5 on the rotary shaft 13 as shown in FIG. The arm member 6 has a driven roller 6a rotatably attached to a lower portion thereof, and a catcher 6b provided at an end thereof. The driven roller 6a rotates with the rotation of the abutting feed roller 55d. The catcher 6b engages with the magnet 3i provided on the main body 3 side, and holds the arm member 6 in a fallen state by magnetic force even when the optical fiber cutting device 1 is used in an inclined posture. As shown in FIG. 4, the arm member 6 has a long hole 6 c formed on the surface on the lid 5 side, and the pin provided on the lid 5 is engaged with the arm member 6. As a result, the arm member 6 stands up in conjunction with at least the operation of opening the lid 5. The arm member 6 has a timing arm 6d extending to the lid 5 side, and a protrusion 6e serving as an engagement adjusting portion is provided at the tip of the timing arm 6d.

  As shown in FIG. 1, the hand-held portion 7 is a cover that is provided on the collection box 51 side and becomes a part of the housing 2. A cutout 7 a is formed on the collection box 51, and the collection box 51 is stored therein. The

  As shown in FIG. 1, the clamps 8 to 11 are configured such that the clamp 8 and the clamp 10 and the clamp 9 and the clamp 11 are paired with each other, and hold the optical fiber at two points along the longitudinal direction. At this time, the clamps 8 and 9 are supported on a support member provided on the main body 3 side, and the clamps 10 and 11 are supported on a support member provided on the lower surface of the lid 5.

  The pressing member 12 is disposed between the clamps 10 and 11, and has a holder 12a and a pusher 12b as shown in FIGS. The pusher 12b is urged downward by a push spring (not shown) disposed immediately above the holder 12a, and presses and cuts the optical fiber from the opposite side of the scratch. The pusher 12b is provided with a pressure adjusting portion 12c that cooperates with the slide member 30 to start the pressing operation of the pressing member 12 after the blade 32 is damaged and presses the optical fiber from the opposite side of the scratch. Yes. At this time, the pressing spring is held between a lid 5 and a holding plate (not shown) screwed to the upper portion of the holder 12a.

  The operation lever 20 causes the operation of the drive mechanism 40, release of the cut optical fiber, and collection operation of the optical fiber debris to be sequentially executed with a minimum number of operations at a predetermined timing. As shown in FIGS. 2 and 4, the operation lever 20 has a pressing operation portion 20a formed at one upper end portion and an engagement portion 20b formed above the release arm 20j extending to the other end side. . The pressing operation portion 20a is formed with a recess 20e in the lower portion for arranging the geared lever 52 by the vertical walls 20c and 20d. The vertical wall 20c is provided with an insertion hole 20f (see FIGS. 6 and 7) in the lower part on the engagement portion 20b side, and the vertical wall 20d has an attachment hole 20g (see FIG. 4) at a position corresponding to the insertion hole 20f. Is provided. The shaft portion of the shaft member 3j having a head attached to the support wall 3c is inserted through the insertion hole 20f. On the other hand, as shown in FIG. 4, a receiving member 21 that receives the shaft portion of the shaft member 3j and a torsion coil spring 22 that urges the pressing operation portion 20a upward are mounted adjacent to the mounting hole 20g. . Further, the vertical wall 20d is provided with a protrusion 20i whose lower surface is lowered toward the vertical wall 20c side at the lower part on the pressing operation unit 20a side. Here, the operation lever 20 has a pressing operation portion 20a formed on an inclined surface so that the upper surface of the pressing operation portion 20a is slightly higher toward the front of the gear portion 52a than the upper surface of the release arm 20j. (See FIG. 7).

  The slide member 30 is driven by the drive mechanism 40 and moves from the front side to the back side in FIG. 1 to scratch the lower portion of the optical fiber between the clamps 8 and 9. As shown in FIGS. 1, 4, and 8, the slide member 30 includes a slider 31, a blade 32, a first holding component 33, and a second holding component 34.

  The slider 31 is slidably attached to the slide guide 4d as shown in FIGS. As shown in FIGS. 7 and 8, the slide guide 4 e is supported by a support member 4 c provided on the base 4.

  The blade 32 is a disk-shaped blade that scratches the optical fiber, and is supported between the first holding component 33 and the second holding component 34 by a support shaft 32a attached to the center. At this time, one end of the support shaft 32a is rotatably supported by the first holding component 33, and the other end extended from the second holding component 34 has only one direction as shown in FIGS. A pinion 32c is attached via a one-way clutch 32b that allows rotation. The teeth of the pinion 32c mesh with the teeth of the rack 36. Here, FIGS. 9 and 10 clearly show the configuration of the slide member 30 installed on the base 4 and other members are omitted.

  When the blade 32 damages the optical fiber by sliding the slide member 30, the blade 32 receives a reaction force from the optical fiber in FIG. For this reason, the one-way clutch 32b uses a clutch having an allowable torque that overcomes the reaction force acting at this time. Further, the rack 36 is supported between support columns (not shown) provided on the stoppers 4a and 4b of the base 4, for example.

  As a result, when the slide member 30 moves from the front side to the back side in FIG. 1 and scratches the lower part of the optical fiber between the clamps 8 and 9, the blade 32 is fixed without rotating. However, when returning to the initial position after cutting the optical fiber, the optical fiber is rotated by a predetermined angle, for example, an angle that is not a divisor of 360 °, as indicated by the arrow shown in FIG. It is.

  As shown in FIG. 4, the first holding component 33 is a plate-like member attached to the second holding component 34, and an engagement piece 33 a that engages with the protrusion 6 e of the arm member 6 is provided on the upper portion. The engagement piece 33a is provided at a position where the slide member 30 is engaged with the protrusion 6e in an initial state where the slide member 30 is located on the operation arm 20 side.

  As shown in FIGS. 1 and 4, the second holding component 34 is a plate-like member disposed on the holder base 3 a side of the main body 3 and is attached to the slider 31. The second holding component 34 is provided with a tension spring 35 between the base 4, an engagement protrusion 34 a is provided in the vertical direction on the back side of the surface on which the blade 32 is disposed, and the upper part is formed in a step shape. The engaging portion 34b is formed. The engaging portion 34b is a timing at which the pusher 12b presses and cuts the optical fiber from the opposite side of the wound after the pressing adjustment portion 12c of the pusher 12b abuts from above so that the optical fiber is scratched by the blade 32. Adjust.

  Here, the sliding range of the slide member 30 is restricted by the stoppers 4a and 4b on the upper surface of the base 4, and the initial position where the engaging protrusion 34a of the second holding component 34 contacts the stopper 4b on the upper surface of the base 4 and the stopper 4a. Slide between the slide position that is in contact with. The first holding component 33 is provided with an adjustment screw 33b (see FIG. 4) for adjusting the vertical position of the blade 32 on the operation lever 20 side. When the vertical position of the blade 32 is adjusted, the locking hole 20h (see FIGS. 1 and 2) of the operating lever 20 and the locking hole 52c (see FIGS. 1 and 2) of the geared lever 52 described later are used. The adjustment screw 33b is operated in a state where the locking pin is inserted and the operating lever 20 is locked to the geared lever 52. On the other hand, when exchanging the blade 32, if the base 4 screwed to the arrangement port 3g of the bottom plate 3f is taken out together with the slide member 30 (see FIG. 8), the exchanging operation can be easily performed.

  The drive mechanism 40 moves the slide member 30 in a direction orthogonal to the optical fiber, thereby scratching the optical fiber with the blade 32 and cutting the optical fiber with the pressing member 12. As shown in FIG. 4, the drive mechanism 40 includes a substantially L-shaped arm 41 that is operated by the operation lever 20, and rollers 42 and 43 that are rotatably attached to both ends of the arm 41. In the arm 41, a shaft 41a provided at one end is rotatably supported by a support member 3k provided in the main body 3 (see FIG. 11). As shown in FIG. 4, when the drive mechanism 40 is in the initial position before the operation, the arm 41 is in contact with the protruding portion 20 i of the operation lever 20 against the roller 42 at one end, and the roller 43 at the other end is the second holding component. 34 is in contact with the engaging protrusion 34a.

  The collection mechanism 50 collects optical fiber waste, and includes a collection box 51, a geared lever 52, a transmission member 54, and a rotation member 55 as shown in FIGS. 4 and 6 in addition to the driven roller 6a. is doing.

  The collection box 51 accommodates the optical fiber scraps cut by the drive mechanism 40, and is placed on the placement portion 4e (see FIG. 6) extended to the base 4, and the side wall is in contact with the support member 4c. And stored in the handheld unit 7. The collection box 51 has an opening 51 a on the extension line of the clamps 8 and 9.

  As shown in FIGS. 1 and 2, the geared lever 52 is a plate-like member provided with a mounting hole (not shown) on one end in the longitudinal direction and a gear portion 52a on the other end. A pressing portion 52b that is pressed by the operation lever 20 is formed in the vicinity of the portion 52a. The geared lever 52 is disposed in the recess 20e of the operating lever 20, and the operating lever 20 is inserted by inserting the shaft portion of the shaft member 3j with the mounting hole, the insertion hole 20f and the mounting hole 20g of the operating lever 20 being aligned. At the same time, it is rotatably supported by the support wall 3c. At this time, the geared lever 52 is fitted with the torsion coil spring 53 that returns the pressing portion 52b to the initial position, for example, the initial state in which it is horizontal (see FIG. 11). Here, the lever 52 with gear is formed with a locking hole 52c (see FIG. 16) corresponding to the locking hole 20h of the operation lever 20 at the lower portion of the pressing portion 52b.

  The transmission member 54 transmits the rotation of the geared lever 52 to the rotation member 55, and has a support shaft 54a, a first gear 54b, and a second gear 54c as shown in FIG. The support shaft 54a is rotatably supported by the main body 3. The first gear 54 b meshes with the gear portion 52 a of the geared lever 52. The transmission member 54 is provided with a one-way clutch (not shown) with a cover 54d between the first gear 54b and the second gear 54c, and rotates in one direction in response to the rotation of the geared lever 52. To do.

  As shown in FIG. 6, the rotation member 55 has a gear 55b and a feed roller 55d attached to a rotation shaft 55a. The rotation shaft 55 a is rotatably supported by the main body 3, and the gear 55 b meshes with the second gear 54 c of the transmission member 54. The rotating shaft 55a rotates in response to the rotation of the geared lever 52 accompanying the depression of the operation lever 20, but does not rotate as the geared lever 52 returns to the initial state. The feeding roller 55 d operates together with the driven roller 6 a of the arm member 6 to grip the optical fiber waste and sends it to the collection box 51.

  The optical fiber cutting device 1 is configured as described above, and cuts the optical fiber as follows. First, the end of the optical fiber to be cut is extended to a length sufficient to be placed on the feeding roller 55d, and the holder H holds the optical fiber. After removing the coating to expose the bare fiber for a predetermined length and cleaning the optical fiber with alcohol or the like, the holder H is placed in the concave groove 3b formed in the holder base 3a of the main body 3 as shown in FIG.

  Next, the lid 5 is closed with the protruding piece 5a. Then, the arm member 6 is laid down in conjunction with the lid 5, the catcher 5b and the magnet 3h are engaged, and the lid 5 is held closed as shown in FIG. As a result, the holder H is pressed against the concave groove 3b by the elastic body 5d and is held in the concave groove 3b. Further, the optical fibers extending a predetermined length from the holder H are gripped at two points by the corresponding clamps 8 and 10 and the clamps 9 and 11, respectively. Here, the holder base 3a may be provided with a magnet in the concave groove 3b and hold the holder H in the concave groove 3b by the magnetic force of the magnet.

  At this time, the arm member 6 is laid down by the lid 5, but the protrusion 6 e provided on the timing arm 6 d is engaged with the engagement piece 33 a of the first holding component 33. For this reason, the arm member 6 is in a slightly raised state, the catcher 6b and the magnet 3i are not engaged, and the driven roller 6a is relative to the feed roller 55d as shown in FIGS. Slightly separated.

  Further, as shown in FIG. 4, in the pressing member 12, since the pressing adjusting portion 12 c is in contact with the engaging portion 34 b of the second holding component 34, the pusher 12 b does not press the optical fiber. On the other hand, the operating lever 20 and the geared lever 52 are urged by the torsion coil springs 22 and 53, and as shown in FIG. 7, the pressing operation portion 20a is positioned upward, and the pressing portion 52b is in the initial position, for example, horizontally. Is retained. Here, FIG. 12 is a timing chart showing respective operating states of the lid 5, the arm member 6, the pressing member 12, the operation lever 20, the blade 32, and the feed roller 55d of the recovery mechanism 50, and refer to FIG. 12 as appropriate below. The operation of the optical fiber cutting device 1 will now be described.

  And after closing the lid | cover 5 and the arm member 6, as shown in FIG. 3, the hand-held part 7 is hold | gripped with one hand. In this state, the operating lever 20 is operated with the other hand, and as shown in FIG. 13, the pressing operation unit 20a is pushed down until it becomes substantially horizontal. When the pressing operation portion 20a is pushed down, the operation lever 20 rotates about the shaft member 3j (see FIG. 11), and the drive mechanism 40 (see FIG. 11) starts to operate and the projection 20i (see FIG. 4). Pushes down the roller 42. Then, as shown in FIG. 14, as the pressing operation unit 20a is depressed, the arm 41 rotates about the shaft 41a to the position indicated by the dotted line in the counterclockwise direction.

  As a result, the roller 43 moves upward while pressing the engaging protrusion 34a of the second holding component 34, and the slide member 30 moves away from the operation lever 20 against the tension spring 35 as shown in FIG. Slides in the direction, and the engaging projection 34a comes into contact with the stopper 4a to stop the sliding. At this time, in the optical fiber cutting device 1, the pinion 32c meshing with the rack 36 is rotated in the clockwise direction in FIG. 10 as the slide member 30 is slid, but the pinion 32c and the support shaft 32a are opposite to each other. A one-way clutch 32b that allows rotation only in the clockwise direction is arranged. For this reason, in the slide member 30, even if the pinion 32c rotates, the support shaft 32a does not rotate, and therefore the blade 32 does not rotate.

  As described above, the slide 32 slides the optical fiber, and the blade 32 damages the optical fiber, and the pressing adjusting portion 12c that is in contact with the engaging portion 34b of the second holding component 34 is disengaged from the engaging portion 34b. 12b presses the optical fiber from the opposite side of the scratch, and the optical fiber is cut. This operation is displayed as a circled number 1 in the operation lever timing chart of FIG. 12 (hereinafter, each operation is numbered in the same manner). When the operation lever 20 becomes substantially horizontal, a slight gap is formed between the upper portion of the recess 20e and the pressing portion 52b of the geared lever 52, as shown in FIG.

  As shown in FIG. 12, the optical fiber is scratched and cut by the engaging portion 34b and the press adjusting portion 12c of the second holding component 34 at different timings. Further, immediately after the start of the movement of the slide member 30, the engagement between the projection 6 e of the timing arm 6 d and the engagement piece 33 a of the first holding component 33 is released. As a result, the distal end side of the arm member 6 is lowered by the engagement of the catcher 6b and the magnet 3i by its own weight and magnetic force, and the driven roller 6a comes into contact with the feed roller 55d of the rotating member 55 as shown in FIG. The system to discharge trash is prepared. At this time, the driven roller 6a may be engaged with the feed roller 55d by biasing the arm member 6 with a spring force instead of its own weight. When the driven roller 6a and the feed roller 55d are engaged, the operation lever 20 and the geared lever 52 are in the positional relationship shown in FIG.

  Next, the pressing operation part 20a is pushed down by a slight gap between the pressing part 20a and the pressing part 52b of the geared lever 52 (see the rounded numeral 2 in FIG. 12 and FIG. 18). Accordingly, the release arm 20j slightly pushes up the protruding piece 5a, and thus the lid 5, by at least the diameter of the optical fiber corresponding to the gap. Thereby, the holding force by the clamps 8 to 11 is relaxed in the optical fiber. However, the cut optical fiber scrap is already gripped by the driven roller 6a and the feed roller 55d immediately after the operation of rotating the operation lever 20 is started (see FIG. 12).

  When the pressing operation portion 20a is pushed down to the lowest position (see FIG. 12, circled numbers 3, 19, 6, and 8), the geared lever 52 rotates together with the operation lever 20 around the shaft member 3j. The collection mechanism 50 is driven. By driving the recovery mechanism 50, the rotation of the geared lever 52 is transmitted to the rotary shaft 55a via the first gear 54b → the second gear 54c → the gear 55b, and the feed roller 55d rotates. As a result, in the optical fiber cutting device 1, the optical fiber debris held by the driven roller 6a and the feed roller 55d is discharged to the collection box 51 side and falls, and is accommodated inside through the opening 51a.

  At this time, the drive mechanism 40 simply rotates with the roller 42 contacting the side surface of the vertical wall 20d, and the arm 41 does not rotate. Further, since the holding of the optical fiber by the clamps 8 to 11 has already been released (see FIG. 12), the optical fiber waste is smoothly discharged by the driven roller 6a and the feed roller 55d. Further, as the operation lever 20 rotates, the engaging portion 20b pushes up the protruding piece 5a from below, and the lid 5 is slightly opened as shown in FIG. As a result, the engagement between the catcher 5b and the magnet 3h is released. However, as shown in FIG. 22, the lid 5 is locked in a slightly opened state by the operation lever 20 because the engaging portion 20 b at the end of the release arm 20 j is engaged with the engaging groove 5 c. For this reason, the lid 5 is not closed by its own weight and magnetic force even when the pressing of the pressing operation unit 20a is released.

  As described above, in the optical fiber cutting device 1, the operation from the cutting of the optical fiber to the collection of the optical fiber waste can be easily performed only by the operation of pushing the operating lever 20 to the end. And after completion | finish of work, if an operator pulls up the lid | cover 5 with the protrusion piece 5a, as shown in FIG. 12, all the members will return to the original state. That is, when the lid 5 is raised by holding the protruding piece 5a, the arm member 6 rises together with the lid 5 from the main body 3, the engagement of the engaging portion 20b with the engaging groove 5c is released, and the lid 5 by the operation lever 20 is released. Is unlocked. Accordingly, the operating lever 20 and the geared lever 52 are returned to their original positions by the spring forces of the torsion coil springs 22 and 53, respectively.

  When the operation lever 20 returns, the spring member 35 returns to the initial position where the slide member 30 abuts against the stopper 4b, and the drive mechanism 40 returns to the initial position shown in FIG. On the other hand, when the geared lever 52 returns, the rotation of the geared lever 52 is transmitted to the first gear 54b. However, the one-way clutch (not shown) provided on the transmission member 54 does not transmit the rotation accompanying the return of the geared lever 52, and the rotation member 55 and the feed roller 55d do not rotate.

  As described above, the optical fiber cutting device 1 can easily perform the operation from the cutting of the optical fiber to the collection of the optical fiber waste simply by operating the operation lever 20. Further, the optical fiber cutting device 1 is not only installed on a work table, but also can be used by an operator and is excellent in usability.

  At this time, as shown in FIGS. 9 and 10, the optical fiber cutting device 1 of the present invention supports the support shaft 32 a of the blade 32 between the first holding component 33 and the second holding component 34. One end of the shaft 32a is rotatably supported by the first holding component 33, and the other end extended from the second holding component 34 is attached with a pinion 32c that meshes with the rack 36 via a one-way clutch 32b. ing. Therefore, the optical fiber cutting device 1 incorporates the rotation operation of the blade in the work of cutting the optical fiber.

  For this reason, the optical fiber cutting device 1 is moved to the rack shown in FIG. 9 in accordance with the movement of the engagement protrusion 34a of the slide member 30 to the initial position where it abuts against the stopper 4b on the upper surface of the base 4 by the spring force of the tension spring 35. The pinion 32c meshing with 36 rotates counterclockwise. As the pinion 32c rotates in one direction, the one-way clutch 32b also rotates in the direction indicated by the arrow in the drawing together with the support shaft 32a. As a result, the blade 32 rotates in the reverse direction by a predetermined angle, for example, an angle that is not a divisor of 360 °. To do. As a result, the circumferential position of the blade 32 that damages the optical fiber is changed.

  This movement of rotating the blade 32 by a non-divisor angle of 360 ° is automatically repeated after the optical fiber has been damaged and before the next optical fiber is damaged. For this reason, the optical fiber cutting device 1 does not require an operation for changing the rotational position of the blade 32 or a tool therefor, and the blade 32 always scratches the optical fiber at a new portion, so that the cutting performance can be improved for a long time. Over a long period of time.

  Here, in consideration of the functions as described above, the optical fiber cutting device 1 is set so that the peripheral length of the pinion 32 c becomes longer with respect to the movement stroke of the slide member 30. In particular, as shown in FIG. 23, the rotation angle θ (= S / L) of the blade 32 (= pinion 32c), which is the ratio of the moving stroke S of the slide member 30 and the circumferential length L of the pinion 32c, is a value that cannot be divided. If set so, the blade 32 rotates by an angle that is not a divisor of 360 °, so that the blade 32 can be used for scratching all over the entire circumference. For this reason, the optical fiber cutting device 1 can reduce the replacement frequency of the blade 32.

(Embodiment 2)
Next, a second embodiment of the optical fiber cutting device of the present invention will be described in detail with reference to the drawings. The optical fiber cutting device according to the first embodiment uses a rack and pinion gear mechanism to change the rotational position of the blade. On the other hand, the optical fiber cutting device according to the second embodiment uses a roller and a friction member to change the rotational position of the blade.

  Here, the optical fiber cutting device of each embodiment described below is the optical fiber cutting device of the first embodiment except that the structure for changing the rotational position of the disk-shaped blade in the slide member 30 is partially different. The device and structure are the same. Therefore, the optical fiber cutting device of each embodiment described below will be described by assigning the same reference numerals to components having the same structure as the optical fiber cutting device of the first embodiment. FIG. 24 is an essential part enlarged perspective view showing the structure of a roller that is a rotating member of a slide member and a friction member that is a driving means for rotating the roller in the optical fiber cutting device according to the second embodiment. FIG. 25 is a plan view of FIG.

  As shown in FIGS. 24 and 25, the optical fiber cutting device according to the second embodiment supports a disc-shaped blade 32 that scratches the optical fiber between the first holding component 33 and the second holding component 34. One end of the supporting shaft 32a is rotatably supported by the first holding component 33, and the other end extended from the second holding component 34 is rotated via a one-way clutch 32b that allows rotation only in the counterclockwise direction. A roller 32d as a member is attached. The roller 32d is supported by a friction member 37, which is supported between support columns (not shown) provided on the stoppers 4a and 4b of the base 4 and serves as driving means. Here, the roller 32d and the friction member 37 are preferably made of a rubber material having a large friction coefficient.

  Since the optical fiber cutting device according to the second embodiment uses the roller 32d and the friction member 37 configured as described above, the friction member 37 is pressed against the friction member 37 by sliding the slide member 30 when the optical fiber is cut. The roller 32d thus rotated rotates. At this time, the slide member 30 is provided with a one-way clutch 32b that allows rotation in only one direction between the roller 32d and the support shaft 32a. For this reason, in the slide member 30, even if the roller 32d rotates, the support shaft 32a does not rotate, and therefore the blade 32 does not rotate.

  On the other hand, when the cutting of the optical fiber is finished and the cover 5 is pulled up with the protruding piece 5a to return all the members to the original state, the following operation is performed. That is, the roller 32d pressed against the friction member 37 is reversed by the movement of the slide member 30 returning to the initial position where the engagement protrusion 34a contacts the stopper 4b on the upper surface of the base 4 by the spring force of the tension spring 35. Rotate in the direction. By rotating the roller 32d in the reverse direction, the one-way clutch 32b also rotates in the reverse direction together with the support shaft 32a. As a result, the blade 32 rotates in the reverse direction by a predetermined angle, for example, an angle that is not a divisor of 360 °.

  As a result, the blade 32 automatically changes the position of the upper edge that damages the optical fiber every time the slide member 30 returns to the initial position. For this reason, the optical fiber cutting device according to the second embodiment does not require the operation of changing the rotational position of the blade 32, and the blade 32 always scratches the optical fiber at a new portion, so that the cutting performance is prolonged. Over a long period of time. As described above, when the roller 32d and the friction member 37 are used, the rotation angle of the blade 32 can be changed by changing the diameter of the roller 32d as compared with the optical fiber cutting device according to the first embodiment using the pinion 32c and the rack 36. It can be set arbitrarily.

(Embodiment 3)
Next, a third embodiment of the optical fiber cutting device of the present invention will be described in detail with reference to the drawings. The optical fiber cutting device according to the first embodiment uses a rack and pinion gear mechanism to change the rotational position of the blade. On the other hand, the optical fiber cutting device of Embodiment 3 uses a claw member and a claw gear to change the rotational position of the blade. FIG. 26 is an enlarged perspective view of a main part showing the structure of a claw wheel that is a rotating member included in a slide member and a claw member that is a driving unit that rotates the claw wheel in the optical fiber cutting device according to the third embodiment. . FIG. 27 is a plan view of FIG.

  As shown in FIGS. 26 and 27, the optical fiber cutting device of Embodiment 3 supports a disc-shaped blade 32 that scratches the optical fiber between the first holding component 33 and the second holding component 34. One end of the supporting shaft 32a is rotatably supported by the first holding component 33, and the other end extended from the second holding component 34 is rotated via a one-way clutch 32b that allows rotation only in the counterclockwise direction. A claw wheel 32e is attached as a member. Each time the slide member 30 slides toward the stopper 4a with the cutting operation of the optical fiber, the claw wheel 32e is moved by the claw member 38 as a driving means supported by a support column (not shown) provided near the stopper 4a of the base 4. The teeth are rotated counterclockwise.

  Here, as shown in FIG. 26, the claw member 38 is supported by the main body 38a with the claw 38b facing the claw wheel 32e. The claw 38b is held substantially horizontally by a pressing spring 38c disposed between the main body 38a.

  The optical fiber cutting device according to the third embodiment uses the claw wheel 32e and the claw member 38 configured as described above. For this reason, in the optical fiber cutting device, when the slide member 30 slides toward the stopper 4a side along with the cutting operation of the optical fiber, and the scratching and cutting of the optical fiber by the blade 32 is completed, the engagement protrusion 34a becomes the base 4 It contacts the stopper 4b on the upper surface. Thereby, the claw wheel 32e contacts the claw member 38 and is rotated by one tooth or more.

  As a result, in the optical fiber cutting device according to the third embodiment, after scratching the optical fiber with the blade 32, the claw wheel 32e that is a rotating member is rotated by one or more teeth by the claw member 38 that is a driving means, The blade 32 rotates a predetermined angle, for example, an angle that is not a divisor of 360 °. Accordingly, the position of the upper edge of the blade 32 that damages the optical fiber is automatically changed.

  In the optical fiber cutting device 1, the driven roller 6a is formed of an elastic body such as rubber, sponge, cork or wood, the feed roller 55d is a metal roller such as stainless steel, and the average particle diameter is 400 μm, for example. When the friction resistance portion is formed by thermal spraying a ceramic piece made mainly of white alumina, it is possible to avoid wear of the feed roller 55d due to friction with the optical fiber waste collected in the collection box 51.

  At this time, since the driven roller 6a does not convey the optical fiber waste, it does not rotate and wear due to friction with the optical fiber waste does not occur. In this case, if the driven roller 6a is made of metal like the feed roller 55d, the optical fiber waste is crushed and cut when gripped between the follow roller 6a and the feed roller 55d. However, since the driven roller 6a is formed of an elastic body, the optical fiber cutting device 1 can prevent the optical fiber waste from being cut.

  As shown in FIG. 28, the optical fiber cutting device 1 is provided with a slide type box cover 51b that covers the opening 51a of the collection box 51 and is manually opened and closed in the direction of the arrow by the operation unit 51c. The fall of the optical fiber waste from the collection box 51 can be prevented.

It is a perspective view which shows the state which opened the cover of the optical fiber cutting device concerning this invention. It is a perspective view which shows the state which closed the lid | cover in the optical fiber cutting device of FIG. It is a perspective view which shows the state which hold | gripped the optical fiber cutting device of FIG. 2 with one hand. FIG. 2 is a perspective view showing an arm member, a pressing member, an operation lever, a slide member installed on a base, a drive mechanism, and a recovery mechanism by partially removing the casing from the optical fiber cutting device of FIG. 1. It is the perspective view which looked at the optical fiber cutting device from the bottom face side. In FIG. 4, it is the perspective view seen from the back surface side of the arm member. In FIG. 2, it is a front view of the optical fiber cutting device which removed the main body, the lid | cover, and the handheld part. It is a perspective view which shows the state which removed the base which installed the slide member from the optical fiber cutting device below. It is a principal part expansion perspective view which shows the structure of the rack which is a pinion which is the rotation member which a slide member has, and the drive means which rotates a pinion. FIG. 10 is a plan view of FIG. 9. In FIG. 2, it is the right view of the optical fiber cutting device which removed the main body and the lid | cover. It is a timing chart which shows each operation state of a lid, an arm member, a press member, an operation lever, a blade, and a feed roller of a recovery mechanism. It is a perspective view of an optical fiber cutting device showing the state where a pressing operation part of an operation lever was pushed down to become substantially horizontal. It is a figure which shows rotation of the arm in the drive mechanism by the protrusion part of an operation lever. FIG. 5 is a perspective view corresponding to FIG. 4 showing movement of a slide member by a drive mechanism driven by an operation lever. FIG. 7 is a right side view corresponding to FIG. 6 in a state where the slide member has moved. It is a front view corresponding to Drawing 7 in the state where a slide member moved. FIG. 3 is a perspective view corresponding to FIG. 2 in a state in which the pressing operation portion of the operating lever is pushed down by a slight gap between the pressing portion of the lever with gear. FIG. 3 is a perspective view corresponding to FIG. 2 in a state where a pressing operation portion of an operation lever is pushed down to the lowest position. FIG. 5 is a perspective view corresponding to FIG. 4 in a state where a pressing operation portion of the operation lever is pushed down to the lowest position. FIG. 8 is a front view corresponding to FIG. 7 in a state where the pressing operation portion of the operation lever is pushed down to the lowest position. It is a schematic diagram which shows the state which the engaging part of the release arm edge part engaged with the engaging groove provided in the cover, and was locked in the state by which the cover was opened by the operation lever. It is a figure explaining the rotation angle of the blade which is a ratio of the moving stroke of a slide member and the peripheral length L of a pinion. It is a principal part expansion perspective view which shows the structure of the roller which is a rotation member which the slide member in the optical fiber cutting device of Embodiment 2 has, and the friction member which is a drive means to rotate a roller. It is a top view of FIG. It is a principal part expansion perspective view which shows the structure of the claw wheel which is a rotation member which the slide member in the optical fiber cutting device of Embodiment 3 has, and the claw member which is a drive means which rotates a claw wheel. It is a top view of FIG. It is a perspective view of the optical fiber cutting device which shows the modification of a collection box.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical fiber cutting device 2 Case 3 Main body 4 Base 5 Lid 6 Arm member 6a Follower roller 7 Hand holding part 8, 9 Clamp 10, 11 Clamp 12 Press member 13 Rotating shaft 20 Operation lever 22 Torsion coil spring 30 Slide member 31 Slider 32 Blade 32a Support shaft 32b One-way clutch 32c Pinion 32d Roller 32e Claw wheel 33 First holding part 34 Second holding part 35 Tension spring 36 Rack 37 Friction member 38 Claw member 38a Main body 38b Claw 38c Push spring 40 Drive mechanism 41 Arm 42, 43 Roller 50 Collection mechanism 51 Collection box 52 Lever with gear 53 Torsion coil spring 54 Transmission member 55 Rotating member G Rubber foot

Claims (5)

A plurality of clamps for gripping the optical fiber;
A slide member having a disk-shaped blade that moves in a direction intersecting the longitudinal direction of the optical fiber and scratches the optical fiber between the plurality of clamps;
A pressing member that presses and cuts the optical fiber from the opposite side of the scratch;
A lever for performing a series of operations from scratching the optical fiber to cutting;
A drive mechanism that is driven by the lever, moves the slide member, and sequentially performs scratching and cutting of the optical fiber;
An optical fiber cutting device for cutting the optical fiber by operating the lever,
The slide member is attached to a support shaft of the disk-shaped blade via a one-way clutch, and has a rotation member that is rotated by a driving unit disposed in the vicinity of the slide member, and the rotation member The optical fiber cutting device is characterized in that, after scratching the optical fiber, the disk-shaped blade is rotated by a predetermined angle by being rotated by the driving means.   The optical fiber cutting device according to claim 1, wherein the predetermined angle is not a divisor of 360 °. The drive means is a rack;
The optical fiber cutting device according to claim 1, wherein the rotating member is a pinion that is disposed along a sliding direction of the slide member and meshes with the rack. The drive means is a friction member disposed along the slide direction of the slide member,
The optical fiber cutting device according to claim 1, wherein the rotating member is a roller pressed against the friction member. The drive means is a claw member disposed on the end side in the slide direction of the slide member when the optical fiber is scratched by the disk-shaped blade,
The optical fiber cutting device according to claim 1 or 2, wherein the rotating member is a claw wheel rotated by one or more teeth by the claw member.

Images