JP4676475B2 - Optical fiber cutting device - Google Patents

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 optical fiber includes a recovery unit that recovers the cut optical fiber waste (see, for example, Patent Document 1). Here, the optical fiber cutting device disclosed in Patent Document 1 includes a recovery mechanism having a feed roller and a driven roller as recovery means for sandwiching optical fiber scraps from above and below and recovering them in a recovery box. The recovery mechanism is arranged on the lower side, a feed roller that rotates only in one direction by a one-way clutch is molded from rubber, and a driven roller that is arranged on the upper side and rotates following the rotation of the feed roller is made of stainless steel or the like. Molded from metal.

JP 2005-301142 A

  By the way, an optical fiber cutting device that collects optical fiber waste in a collection box grips the optical fiber waste by both rotating rollers and conveys it to the recovery box. To do. For this reason, when the optical fiber cutting device repeats the operation of cutting the optical fiber, there is a problem that repulsion occurs between the charged optical fiber scraps, and the optical fiber scraps jump out of the collection box. In this case, it is conceivable to neutralize the charging of the optical fiber debris with an ionizer or the like, but there are problems that it is expensive as an antistatic measure and the use place of the optical fiber cutting device is limited.

  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 can easily prevent the optical fiber waste from jumping out of the collection box and that does not limit the place of use. To do.

  In order to solve the above-described problems and achieve the object, an optical fiber cutting device of the present invention is an optical fiber cutting device that holds optical fiber scraps cut from an optical fiber by a pair of rollers and collects them in a collection box. And the said collection box has the charging part which can be charged in the reverse polarity to the said optical fiber waste in at least one part, It is characterized by the above-mentioned.

  Moreover, the optical fiber cutting device of the present invention is characterized in that, in the above invention, the charging portion is electrically connected to one of the pair of rollers that are frictionally charged in the opposite polarity to the optical fiber scrap. .

  Moreover, the optical fiber cutting device of the present invention is characterized in that, in the above invention, the charging unit is a bottom wall or a side wall of the collection box.

  The optical fiber cutting device of the present invention is characterized in that, in the above invention, the charging unit is a charging member having a charging needle and provided on a bottom wall of the recovery box.

  Moreover, the optical fiber cutting device of the present invention is characterized in that, in the above invention, the collection box is formed from a conductive resin or a synthetic resin having a conductive treatment applied to the surface, for example, conductive plating. To do.

  In the optical fiber cutting device of the present invention, the recovery box that holds and collects the optical fiber waste by the roller has at least a part of the charging portion that can be charged with the opposite polarity to the optical fiber waste. Since the optical fiber waste is electrostatically attracted by being charged with a polarity opposite to that of the optical fiber waste, the optical fiber waste can be easily prevented from jumping out of the collection box, and the use place is not limited. There is an effect.

  Embodiments of the optical fiber cutting device of the present invention will be described below 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, the optical fiber held by the optical fiber holder H (see FIG. 1) is set in the concave groove 3b of the main body 3, and then the lid 5 is attached as shown in FIG. When closed, 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).

  As described above, the optical fiber cutting operation includes (1) setting the optical fiber held by the optical fiber holder H at a predetermined position (concave groove 3b), and (2) closing the lid 5 of the optical fiber cutting device 1. And (3) operating the lever 20, and the optical fiber is cut. That is, after the lid 5 is closed, the optical fiber is cut only by operating the lever 20.

  Then, after the optical fiber is cut, when the pressing operation portion 20a of the operation lever 20 is further pushed down, the gripping of the optical fiber by the clamps 8 to 11 is released, and the collection having the feeding roller 55d and the driven roller 6a is performed. The mechanism 50 operates, 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. An optical fiber 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 optical fiber 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, the concave groove 3b may be provided with a magnet to hold the optical fiber holder H with a magnetic force, or may be sandwiched between a plunger and 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, as shown in FIG. 20, the main body 3 has an arrangement port 3g formed in the bottom plate 3f, and a base 4 is screwed to the arrangement port 3g. The main body 3 has a rubber foot G (FIG. 20) 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 does not need to have the rubber feet G, and the flat bottom plate 3f may be directly placed on a work table or the like.

  As shown in FIG. 4, the base 4 is provided with a slide member 30 on the upper surface, and the slide member 30 and the drive mechanism 40 are operated by a link mechanism. The geared lever 52 operated by the lever 20 and the recovery mechanism 50 are operated by a gear transmission mechanism and are electrically connected to each other. 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 portion thereof. The driven roller 6a is a roller that rotates with the rotation of the abutting feed roller 55d, and is formed from an elastic body such as rubber, sponge, cork, or wood. 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 Here, as shown in FIG. 2, the hand-held portion 7 is provided with an insertion hole 7 c in the wall surface. The insertion hole 7c is used for inserting a driver when changing the position of the blade along the circumferential direction of the blade 32 described later.

  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.

  As shown in FIGS. 1 and 4, the pressing member 12 is disposed between the clamps 10 and 11, and includes a holder 12a and a pusher 12b. 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 walls 20c and 20d are respectively provided with an insertion hole 20f (see FIG. 7) and a mounting hole 20g (see FIG. 4) at corresponding positions on the lower side of the engaging portion 20b. 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, in the operation lever 20, the pressing operation portion 20a is formed on an inclined surface so that the upper surface of the pressing operation portion 20a is slightly higher toward the front 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 21, 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 21, the slide guide 4 e is supported by a support member 4 c provided on the base 4.

  The blade 32 is a circular blade that scratches the optical fiber, and is held by the second holding component 34 by a screw (not shown) that is screwed to the first holding component 33. The blade 32 has a number indicating the position of the blade along the circumferential direction on the outer periphery, and the position of the blade is changed every predetermined number of times of use.

  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 the 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 slide position of the slide member 30 is regulated by the engagement projection 34 a of the second holding component 34 coming into contact with the stoppers 4 a and 4 b provided on the upper surface of the base 4. 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 replacing the blade 32, if the base 4 screwed to the arrangement opening 3g of the bottom plate 3f is taken out together with the slide member 30 as shown in FIG. 21, the replacement 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. 6). 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 5 in addition to the driven roller 6a. is doing.

  The collection box 51 accommodates optical fiber scraps cut by the drive mechanism 40, and is placed on the placement portion 4e (see FIG. 5) extended to the base 4, and the side wall abuts on the support member 4c. And stored in the handheld unit 7. The collection box 51 is a substantially rectangular parallelepiped box in which an opening 51a is formed on the extension line of the clamps 8 and 9, and most of the box is formed of a synthetic resin. However, as shown in FIG. The charging portion 51b is formed by forming the bottom wall of metal or synthetic resin. For this reason, when the collection box 51 is placed on the placement portion 4 e, the charging portion 51 b comes into contact with the base 4 and is electrically connected to the feed roller 55 d of the rotating member 55 via the base 4.

  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 mounted with a torsion coil spring 53 for returning the pressing portion 52b to an initial position, for example, an initial state in which the pressing portion 52b is horizontal (see FIG. 6). Here, in the lever 52 with gear, a locking hole 52c (see FIG. 13) corresponding to the locking hole 20h of the operation lever 20 is formed in 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. 5, the rotating member 55 has a gear 55b and a feed roller 55d attached to a rotating 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. As shown in FIG. 4, the feed roller 55d has a friction resistance portion Pf formed on the surface of a metal roller such as stainless steel. The frictional resistance portion Pf only needs to be formed on at least a portion of the feed roller 55d where the optical fiber scrap comes into contact. For example, the frictional resistance portion Pf is formed by spraying a ceramic piece mainly made of white alumina having an average particle diameter of 400 μm. . As shown in FIG. 8, the feed roller 55d is disposed such that the rotation center Cf is shifted rearward in the horizontal direction with respect to the center Cd of the driven roller 6a when viewed in the feed-out direction in which the optical fiber waste Fcw is sent to the collection box 51. Yes. Therefore, the recovery mechanism 50 grips the optical fiber waste Fcw by the driven roller 6a and the feed roller 55d, and sends the optical fiber waste Fcw to the recovery box 51 with the front end of the optical fiber waste obliquely downward.

  Accordingly, when the cut optical fiber waste is gripped and conveyed by the driven roller 6a and the feed roller 55d, the glass is made positive by contact and separation between the optical fiber waste made of glass and the driven roller 6a and the feed roller 55d. The driven roller 6a made of rubber and the feed roller 55d made of metal are negatively charged. However, the feed roller 55 d is electrically connected to the collection box 51 via the base 4. For this reason, the collection box 51 is negatively charged with a polarity opposite to that of the optical fiber waste and electrostatically attracts the optical fiber waste.

  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 by a length sufficient for placing the end of the optical fiber on the feed roller 55 d and held by the fiber holder H. After removing the coating to expose the bare fiber for a predetermined length and cleaning the optical fiber with alcohol or the like, the optical fiber holder H is inserted into the groove 3b formed on the holder base 3a of the main body 3 as shown in FIG. Deploy.

  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. Thereby, the optical fiber holder H is pressed by the elastic body 5d to the concave groove 3b, and is hold | maintained at the concave groove 3b. Further, the optical fibers extending a predetermined length from the optical fiber 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 optical fiber 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. Therefore, the arm member 6 is slightly lifted, the catcher 6b and the magnet 3i are not engaged, and the driven roller 6a is in relation 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. 9 is a timing chart showing the 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. 9 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 operation lever 20 is operated with the other hand, and as shown in FIG. 10, the pressing operation portion 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. 6), and the drive mechanism 40 (see FIG. 6) starts to operate and the protrusion 20i (see FIG. 4). Pushes down the roller 42. 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 shown in FIG.

  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. Moved in the direction. As a result, the blade 32 scratches the optical fiber, and the pressure adjusting portion 12c that has been in contact with the engaging portion 34b of the second holding component 34 is detached from the engaging portion 34b, and the pusher 12b opposes the optical fiber against the scratch. The optical fiber is cut by pressing from the side. This operation is displayed as a circled number 1 in the timing chart of the operation lever in FIG. 9 (hereinafter, each operation is similarly numbered). 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. 9, 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. Further, 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 52a and the pressing part 52b of the geared lever 52 (see FIG. 9 with a circled number 2 and FIG. 15). 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. In FIG. 15, it is difficult to determine the difference from the previous state, but it can be seen from the drawing that the distal end side of the arm member 6 is lowered from the positional relationship with the lid 5. 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 turning the operation lever 20 is started (see FIG. 9).

  Further, the pressing operation unit 20a is pushed down to the lowest position (see FIG. 9, circled numeral 3, FIGS. 16 to 18). As a result, the geared lever 52 rotates together with the operation lever 20 around the shaft member 3j, and the recovery 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, the optical fiber debris held by the driven roller 6a and the feed roller 55d is discharged to the collection box 51 side and dropped, and is accommodated from the opening 51a to the inside.

  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. 9), the optical fiber debris 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. 19, 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. After the work is completed, if the worker holds the protruding piece 5a and pulls it upward, as shown in FIG. 9, all members return to their original states. 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.

  Here, when the operation lever 20 is returned, the slide member 30 is returned to the original position on the operation lever 20 side by the spring force of the tension spring 35, and the drive mechanism 40 is returned to the original state. 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 in 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 FIG. 8, the optical fiber cutting device 1 of the present invention has a charging portion 51b in which the collection box 51 is electrically connected to the feed roller 55d. For this reason, when the cut optical fiber waste is gripped and conveyed by the driven roller 6a and the feed roller 55d, for example, as the feed roller 55d is negatively charged, the collection box 51 is also negatively charged through the charging unit 51b. Is charged. For this reason, for example, positively charged optical fiber waste is electrostatically attracted to the reverse polarity recovery box 51 and recovered. Therefore, the optical fiber cutting device 1 can easily prevent the optical fiber debris from jumping out by providing the charging unit 51b without the optical fiber debris jumping out of the collection box even when the optical fiber is repeatedly cut. Moreover, since the collection box 51 is provided only with the charging unit 51b, the place of use is not limited.

(Modification 1)
Here, as shown in FIG. 22, the collection box 51 may form the charging portion 51 c by configuring the side wall in contact with the support member 4 c of the base 4 with a conductive metal or synthetic resin. Even if the recovery box 51 is configured in this way, the charging portion 51c is electrically connected to the feed roller 55d. For this reason, the collection box 51 is negatively charged through the charging portion 51c as the feed roller 55d is negatively charged by cutting the optical fiber. Therefore, the optical fiber cutting device 1 can electrostatically attract and collect the positively charged optical fiber waste Fcw, and can easily prevent the optical fiber waste Fcw from jumping out of the recovery box. The place of use is not limited.

(Modification 2)
Further, as shown in FIG. 23, the collection box 51 may be provided with a charging member 56 having a charging needle 56a on the bottom wall. With this configuration, in the collection box 51, the charging needle 56a is electrically connected to the feed roller 55d. At this time, when the charging needle 56a is erected in the center of the collection box 51, the optical fiber waste Fcw is electrostatically adsorbed around the charging needle 56a. Therefore, the optical fiber cutting device 1 can easily prevent the optical fiber waste from popping out while increasing the recovery rate of the optical fiber waste Fcw, and the place of use is not limited.

(Modification 3)
Furthermore, as shown in FIG. 24, the collection box 51 may be formed of a conductive resin kneaded with a conductor Mc such as carbon, metal powder, carbon fiber, etc., so that the entire box may be used as a conductive portion. Even if comprised in this way, since the collection box 51 is electrically connected to the feed roller 55d, the fiber waste Fcw is electrostatically adsorbed. Therefore, the optical fiber cutting device 1 can easily prevent the optical fiber waste from popping out, and the place of use is not limited. In this case, the collection box 51 may be provided with conductivity by performing a conductive treatment, for example, conductive plating or conductive coating on the surface of the synthetic resin, instead of being molded from the conductive resin.

  The optical fiber cutting device 1 is configured to operate the operating arm 20 on a movable portion such as the slide member 30, the drive mechanism 40, or the recovery mechanism 50 instead of electrically connecting the feed roller 55d and the recovery box 51. It is also possible to provide a negatively charged static electricity generating portion having a polarity opposite to that of the optical fiber scrap and to charge the collection box 51 to a negative charge by operating the operating arm 20 empty.

  Also, as shown in FIG. 25, 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.

  Further, the optical fiber cutting device 1 described in the embodiment has been described as simply performing the operation from the cutting of the optical fiber to the collection of the optical fiber debris only by the operation of pushing the operating lever 20 to the end. However, the optical fiber cutting device of the present invention may be an optical fiber cutting device that collects optical fiber scraps cut from the end of the optical fiber into a collection box by means of a roller. An optical fiber cutter disclosed in Japanese Patent Laid-Open No. 2000-89034 may be used.

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. In FIG. 4, it is the perspective view seen from the back surface side of the arm member. In FIG. 2, it is the right view of the optical fiber cutting device which removed the main body and the lid | cover. 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 sectional drawing explaining arrangement | positioning of the charging part of a collection box mounted in the mounting part of a base, a feed roller, and a driven roller. 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 the perspective view which looked at the optical fiber cutting device from the bottom face side. 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 sectional drawing which shows the 1st modification of a collection box. It is sectional drawing which shows the 2nd modification of a collection box. It is sectional drawing which shows the 3rd modification of a collection box. It is a perspective view of the optical fiber cutting device which shows the modification which provided the box cover which covers opening to 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 33 First holding component 34 Second holding component 35 Tension spring 40 Drive mechanism 41 Arm 42, 43 Roller 50 Recovery mechanism 51 Recovery box 51b Charging unit 51c Charging unit 56 Charging member 56a Charging needle 52 Geared lever 53 Torsion coil spring 54 Transmission member 55 Rotating member 55d Feeding roller G Rubber foot Mc Conductor

Claims (4)

An optical fiber cutting device that grips optical fiber scraps cut from an optical fiber by a pair of rollers and collects them in a recovery box,
The recovery box has at least a part of a charging part that can be charged with a polarity opposite to that of the optical fiber waste ,
The optical fiber cutting device , wherein the charging unit is electrically connected to one of the pair of rollers that are frictionally charged in the opposite polarity to the optical fiber scrap . The optical fiber cutting device according to claim 1, wherein the charging unit is a bottom wall or a side wall of the collection box. The optical fiber cutting device according to claim 1, wherein the charging unit includes a charging needle and is a charging member provided on a bottom wall of the collection box. The optical fiber cutting device according to claim 1, wherein the collection box is formed of a conductive resin, and the entire collection box is the charging unit.

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