JP6169060B2 - Optical fiber ribbon manufacturing method and optical fiber ribbon manufacturing apparatus - Google Patents

Description

  The present invention relates to an optical fiber ribbon manufacturing method and an optical fiber ribbon manufacturing apparatus in which a plurality of optical fiber strands are bonded in parallel.

  As an optical fiber for transmitting a large amount of data at a high speed, an optical fiber tape core in which a plurality of optical fiber strands are arranged in parallel and bonded is used for easy storage in a cable and work. ing. As the optical fiber ribbon, a fiber in which parallel optical fibers are fixed with a resin over the entire length is used, and there are optical fiber tapes in which optical fiber strands are intermittently bonded to each other. Intermittent bonding of optical fiber strands has features such as an increase in concentrating density, a reduction in transmission loss due to bending, and ease of single-core operation.

  As a means for applying an adhesive member for intermittently bonding optical fiber strands, one that is discharged and adhered by a dispenser (for example, Patent Document 1), one that uses a shutter mechanism (for example, Patent Document 2), A device using a coating method by transfer from a rotating body (for example, Patent Document 3) has been devised. In addition, a resin that partially cures the applied resin to obtain an intermittent adhesive portion has been devised.

JP 2001-264604 A JP 2010-33010 A JP 2012-252196 A

  In order to obtain an optical fiber tape core wire in which optical fiber strands are intermittently bonded at an arbitrary interval, it is necessary to synchronize the speed of the optical fiber strands and the operation of resin application to the optical fiber strands. There is. Therefore, the switching speed with and without resin coating is a major factor that determines the manufacturable linear speed. For this reason, in order to manufacture an optical fiber ribbon at high speed, it is necessary to increase the switching speed.

  However, in the method as disclosed in Patent Document 1, the resin is pushed out onto the fiber strand while pressure is applied, but there is a limit speed in the switching operation of the presence or absence of pressurization by the dispenser. As you move up, you reach an area where the action of the dispenser cannot follow. Therefore, in this patent, the linear velocity is limited to 15 to 100 m / min.

  In addition, if the temperature of the resin used for tape formation is equal, the higher the viscosity of the resin, the worse the temporal response of the flow to a change in pressure. For this reason, when a high viscosity resin is used by extruding the resin to the surface of the fiber, the time difference between when the pressure on the resin in the flow path is stopped and when the resin finishes flowing increases. The time during which the resin is actually applied onto the fiber strand becomes longer with respect to time. That is, the higher the viscosity of the resin, the more difficult it is to discharge the resin in a short time.

Similarly, even when a shutter mechanism as shown in Patent Document 2 is used, the linear speed is limited by the operating speed of the shutter.
In addition, when the transfer from the rotating body as shown in Patent Document 3 is used, the resin adhering to the surface of the rotating body is scattered by the centrifugal force generated by the rotation, and the amount of adhesion to the fiber is not stable. There is a problem. Also, this effect becomes more prominent during high-speed manufacturing.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a method of manufacturing an intermittently bonded optical fiber ribbon that can be manufactured at high speed.

In order to achieve the above-described object, the first invention is a method of manufacturing an optical fiber ribbon in which a plurality of optical fiber strands are bonded intermittently in the longitudinal direction. An optical fiber ribbon manufacturing apparatus comprising: an application roll having a plurality of application holes communicating with the space; a pressure unit disposed in the space; and an adhesive member supply unit that supplies an adhesive member to the space. A plurality of the application holes are intermittently formed in the circumferential direction on the outer peripheral surface of the application roll, and a plurality of the application holes are provided in the width direction. The application holes having a predetermined length include a plurality of small holes. The pressurizing unit is fixed in the vicinity of the position where the adhesive member is applied to the optical fiber, and the adhesive member is supplied to the space by the adhesive member supply unit while rotating the application roll. Supplied by the pressure unit Then, the adhesive member is extruded from the application hole to the outer peripheral surface, and the adhesive member is intermittently applied between the plurality of optical fiber strands aligned at a predetermined interval, and the optical fiber strands are bonded to each other. An optical fiber ribbon manufacturing method characterized by the above.

  The plurality of optical fiber strands may be aligned at a predetermined interval by an alignment roll having a V-groove before an adhesive member is applied by the application roll. The plurality of optical fiber strands may be coated with an adhesive member in a state of being aligned at a predetermined interval by a V-groove formed in the coating roll.

  According to the first aspect, since the adhesive member is applied by the application roll, it is easy to synchronize with the linear velocity of the optical fiber. At this time, since the adhesive member is applied to the optical fiber from the inside of the application roll through the application hole, it is easy to control the application pitch and the like. Moreover, since an adhesive member is hold | maintained inside an application | coating roll, it can prevent that an adhesive member scatters by rotation of an application | coating roll.

  In particular, since the adhesive member is pushed out to the outer surface of the application roll by the rotation of the application roll and the pressurization unit installed in the roll, an almost constant amount of the adhesive member can be applied according to the size of the application hole. .

  Further, since the optical fiber strands are aligned at a predetermined interval by the alignment roll having V grooves, the adhesive member can be reliably applied to the gap between the optical fiber strands.

  Further, by forming the V-groove on the coating roll, an alignment roll is not necessary, and an optical fiber ribbon can be manufactured with a simpler structure.

  In addition, the coating hole having a predetermined length is configured by arranging a plurality of small holes, so that the extrusion amount of the adhesive member is stabilized, and a substantially uniform amount of the adhesive member in the range where the coating hole is formed is formed on the optical fiber element. Can be applied to the wire.

A second invention is an optical fiber tape manufacturing apparatus for intermittently bonding a plurality of optical fiber strands in a longitudinal direction, and has a space inside and a plurality of coating holes communicating with the space on an outer peripheral surface. A coating roll, a pressure unit disposed in the space, and an adhesive member supply unit that supplies an adhesive member to the space, and the coating hole is circumferential in the outer peripheral surface of the coating roll. A plurality of the application holes having a predetermined length, the plurality of small holes being aligned, and applying the adhesive member to the optical fiber An apparatus for manufacturing an optical fiber ribbon, wherein an adhesive member that moves with rotation of the coating roll can be pushed out from the coating hole to an outer peripheral surface by the pressure unit fixed in the vicinity of the position. It is.

  According to the second invention, the optical fiber ribbon can be manufactured at a high speed, and intermittent adhesive portions can be formed.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method etc. of the intermittently bonding type | formula optical fiber tape core wire which can respond also to manufacture at high speed can be provided.

The perspective view which shows the optical fiber tape core wire 1. FIG. It is a figure which shows the optical fiber tape core wire 1, (a) is a top view, (b) is the sectional view on the AA line of (a). 1 is a schematic plan view showing a configuration of an optical fiber ribbon manufacturing apparatus 10. FIG. 1 is a schematic front view showing a configuration of an optical fiber tape core manufacturing apparatus 10. FIG. (A) is the perspective view which shows the V-groove roll 15, (b) is the perspective view which shows the application roll 17. FIG. The enlarged front view of the application roll 17 vicinity. It is sectional drawing of the application | coating roll 17 grade | etc., And the GG sectional view taken on the line of FIG. Sectional drawing of the application | coating roll 17a. (A) is a perspective view of the application roll 17b, (b) is an enlarged view of the application hole 25a. The figure which shows the state which has arrange | positioned the V-groove roll 15 before and behind the application roll 17b. The figure which shows the state which installed the air cylinder 37 in the die | dye 31. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an optical fiber ribbon 1. 2 is a view showing the optical fiber ribbon 1, FIG. 2 (a) is a plan view, and FIG. 2 (b) is a cross-sectional view taken along line AA in FIG. 2 (a). The optical fiber ribbon 1 is configured by bonding a plurality of optical fiber strands 3a, 3b, 3c, and 3d in parallel. In the following description, an example constituted by four optical fiber strands 3a, 3b, 3c, 3d is shown, but the present invention is not limited to this, and an optical fiber tape core comprising a plurality of optical fiber strands. Any wire can be applied.

  In the optical fiber ribbon 1, adjacent optical fiber strands 3 a, 3 b, 3 c, 3 d are bonded by an adhesive member 5 intermittently at a predetermined interval. Adhering portions between adjacent optical fiber strands are arranged in a staggered manner with respect to the longitudinal direction of the optical fiber ribbon 1.

  That is, as shown in FIG. 2A, the bonding position between the optical fiber strands 3b and 3c with respect to the longitudinal direction of the optical fiber ribbon 1 is between the adjacent optical fiber strands 3a and 3b and the optical fiber strand. With respect to the bonding position between 3c and 3d, they are formed at the same pitch with a substantially half-pitch shift. Therefore, the bonding position in the longitudinal direction between the optical fiber strands 3a and 3b and the bonding position in the longitudinal direction between the optical fiber strands 3c and 3d are the same position.

  Here, the length and the coating pitch at which the adhesive members 5 between all the adjacent optical fiber strands 3a, 3b, 3c, and 3d in the longitudinal direction of the optical fiber ribbon 1 are applied are the same. The coating length is, for example, about 50 mm, and the coating pitch may be about 150 mm. Therefore, the non-application length in this case is about 100 mm.

  Moreover, as shown in FIG.2 (b), it is desirable to expose the adhesive member 5 in the groove part above and below the contact part of optical fiber strands. That is, it is desirable that the adjacent optical fiber strands 3 a, 3 b, 3 c, 3 d are bonded on the upper and lower surfaces of the optical fiber ribbon 1.

  Next, a method for manufacturing the optical fiber ribbon 1 will be described. FIG. 3 is a schematic plan view showing the configuration of the optical fiber ribbon manufacturing apparatus 10, and FIG. 4 is a schematic front view showing the configuration of the optical fiber ribbon manufacturing apparatus 10. The optical fiber ribbon manufacturing apparatus 10 mainly includes supply units 11a, 11b, 11c, 11d, alignment rolls 13a, 13b, 13c, 13d, a V-groove roll 15, a coating roll 17, a push-up roll 19, an alignment unit 21, It comprises an ultraviolet irradiation unit 23 and the like. In addition, you may install the guide etc. which abbreviate | omitted illustration suitably so that the optical fiber strands 3a, 3b, 3c, and 3d may pass along an appropriate course.

  Supply part 11a, 11b, 11c, 11d is a site | part which supplies optical fiber strand 3a, 3b, 3c, 3d, respectively. Supply part 11a, 11b, 11c, 11d is a bobbin, for example. The optical fiber strands 3a, 3b, 3c and 3d are fed out with a predetermined tension while rotating the bobbin around which the optical fiber strands 3a, 3b, 3c and 3d are wound.

  The optical fiber strands 3a, 3b, 3c, and 3d fed from the supply units 11a, 11b, 11c, and 11d are respectively sent to the alignment rolls 13a, 13b, 13c, and 13d. The optical fiber strands 3a, 3b, 3c, and 3d are gathered at a certain distance from each other by the aligning rolls 13a, 13b, 13c, and 13d, and are sent to the V-groove roll 15 and the coating roll 17 almost in parallel.

  The optical fiber strands 3a, 3b, 3c, and 3d sent from the alignment rolls 13a, 13b, 13c, and 13d first come into contact with the V-groove roll 15. FIG. 5A is a perspective view showing the V-groove roll 15. The V groove roll 15 has a plurality of V grooves 29 on the outer periphery. The V grooves 29 are formed continuously in the circumferential direction of the V groove roll 15 and are provided at predetermined intervals in the axial direction. Each V-groove 29 can hold the optical fiber strands 3a, 3b, 3c, and 3d. That is, the V-groove roll 15 is a backup roll for aligning the optical fiber strands 3a, 3b, 3c, and 3d at a predetermined interval. The V-groove roll 15 aligns the optical fiber strands 3a, 3b, 3c, and 3d with a predetermined gap therebetween.

  The optical fiber strands 3 a, 3 b, 3 c, 3 d aligned by the V-groove roll 15 are sent to the coating roll 17. FIG. 5B is a perspective view showing the application roll 17. The coating roll 17 is a roll that applies an adhesive member to the optical fiber strands 3a, 3b, 3c, and 3d. The coating roll 17 is a roll whose inside is hollow, and one side surface is opened. In the vicinity of the outer periphery of the opening of the coating roll 17, a side wall 27 is provided so as to block a part of the opening.

  A plurality of application holes 25 are formed on the outer peripheral surface of the application roll 17. The coating hole 25 communicates the space inside the coating roll 17 with the outside. The application hole 25 is formed by a long hole having a predetermined width and length. The width of the application hole 25 corresponds to the application width of the adhesive member 5, and the length of the application hole 25 corresponds to the application length of the adhesive member 5. A plurality of application holes 25 are formed at a predetermined pitch in the circumferential direction of the application roll 17 (longitudinal direction of the application holes 25). The pitch in the circumferential direction of the application holes 25 corresponds to the application pitch of the adhesive member 5.

  A plurality of application holes 25 are provided in the width direction of the application roll 17 in accordance with the number of optical fiber strands to be bonded. For example, in order to bond four optical fiber strands 3a, 3b, 3c, 3d, three rows of coating holes 25 are provided. The application holes 25 adjacent to the width direction of the application roll 17 are provided so as to be shifted from each other by a half pitch. That is, a plurality of application holes 25 are provided in a staggered manner in the width direction of the application roll 17. The details of the method for applying the adhesive member by the application roll 17 will be described later.

  The optical fiber strands 3 a, 3 b, 3 c, 3 d that have passed through the coating roll 17 are arranged in parallel so as to be adjacent to each other on the same plane at the alignment unit 21 via the push-up roll 19. The push-up roll 19 is disposed above the application roll 17. Accordingly, the optical fiber strands 3a, 3b, 3c, and 3d are lifted upward by the push-up roll 19. For this reason, the optical fiber strands 3a, 3b, 3c, and 3d can be reliably brought into contact with the coating roll 17.

  For example, a metal die or roll can be applied to the aligning portion 21. For example, a die having a tapered portion that narrows from the introduction side of the optical fiber wires 3a, 3b, 3c, and 3d toward the concentrating portion is used in the alignment portion 21. By doing in this way, optical fiber strand 3a, 3b, 3c, 3d can be made to contact mutually.

  Further, when an ultraviolet curable resin is used as the adhesive member 5, the adhesive member 5 applied by the application roll 17 is cured by the ultraviolet irradiation unit 23. The optical fiber ribbon 1 manufactured as described above is wound up by winding means or the like (not shown).

  6 is an enlarged front view showing the vicinity of the coating roll 17, and FIG. 7 is a sectional view taken along the line GG of FIG. The optical fiber strands 3a, 3b, 3c and 3d are sent to the V-groove roll 15 (in the direction of arrow B in the figure). The V-groove roll 15 is rotated by optical fiber strands 3a, 3b, 3c, and 3d (in the direction of arrow C in the figure). The optical fiber strands 3 a, 3 b, 3 c, 3 d aligned by the V groove roll 15 are sent to the coating roll 17.

  As described above, the coating roll 17 has a space inside. Moreover, one side surface of the coating roll 17 is opened, and a side wall portion 27 is formed in a rib shape on the outer peripheral side. The side wall portion 27 protrudes in the center direction from the outer peripheral surface of the application roll 17 and closes a part of the outer peripheral side of the opening portion of the application roll 17.

  Inside the coating roll 17, the adhesive member 5 is continuously supplied from the opening by the adhesive member supply unit 33. The adhesive member 5 is held on the inner surface of the application roll 17 by centrifugal force due to the rotation of the application roll 17 (in the direction of arrow D in the figure). The coating roll 17 is rotated at the same level as the conveying speed of the optical fiber strands 3a, 3b, 3c, and 3d by a rotation driving mechanism such as a motor.

  Inside the coating roll 17 and in the vicinity of the contact portion with the optical fiber strands 3a, 3b, 3c, and 3d, a die 31 that is a local pressurizing portion is provided. The die 31 is a rigid body and is fixed by an arm or the like (not shown). Accordingly, the position of the die 31 does not move regardless of the rotation of the coating roll 17.

  By rotating the coating roll 17, the adhesive member 5 held on the inner surface of the coating roll 17 moves to the position of the die 31. The adhesive member 5 that has moved to the die 31 is pushed into the gap between the die 31 and the inner surface of the coating roll 17. Here, as shown in FIG. 6, the die 31 has a tapered portion on the surface facing the inner surface of the coating roll 17. That is, the distance between the die 31 and the inner surface of the coating roll 17 in the introduction portion of the adhesive member 5 of the die 31 is wide, and the distance between the die 31 and the inner surface of the coating roll 17 is gradually narrowed with respect to the rotation direction of the coating roll 17. A die 31 is disposed on the surface.

  As shown in FIG. 7, when the application hole 25 of the application roll 17 is positioned on the outer peripheral side of the die 31, the adhesive member 5 between the die 31 and the inner surface of the application roll 17 is pushed out of the application hole 25 by the die 31. (In the direction of arrow F in FIG. 6). At this time, since the die 31 is tapered, the adhesive member 5 can be reliably pushed out from the coating hole 25. The dice 31 do not come into contact with the inner surface of the coating roll 17, and a slight gap is formed between the dies 31 even at the narrowest interval. By doing in this way, abrasion of the die | dye 31 or the application | coating roll 17 inner surface can be prevented.

  As described above, the optical fiber strands 3 a, 3 b, 3 c, 3 d are aligned at a predetermined interval by the V groove 29 of the V groove roll 15. The coating hole 25 is located between the optical fiber strands 3a, 3b, 3c, and 3d. Therefore, the adhesive member 5 pushed out from the application hole 25 is applied between the optical fiber strands 3a, 3b, 3c, and 3d. The optical fiber strands 3a, 3b, 3c, and 3d coated with the adhesive member 5 having a predetermined length at predetermined intervals are sent to the next process (arrow E in FIG. 7).

  At this time, the adhesive member 5 applied from the upper part of the optical fiber strands 3a, 3b, 3c, 3d is separated from each other by gravity or surface because the optical fiber strands 3a, 3b, 3c, 3d are spaced apart from each other. Flows downward due to tension or the like. Therefore, the adhesive member 5 is also applied to the lower side of the optical fiber wires 3a, 3b, 3c, and 3d.

  In the above-described example, the optical fiber strands 3a, 3b, 3c, and 3d are aligned at a predetermined interval using the V-groove roll 15, but the present invention is not limited to this. For example, as shown in FIG. 8, a coating roll 17a having a V groove 29 on the outer peripheral surface can also be used.

  Similar to the V-groove roll 15, the coating roll 17 a is formed with a continuous number of V-grooves 29 corresponding to the optical fiber strands 3 a, 3 b, 3 c, and 3 d in the circumferential direction. The application hole 25 is formed between the V grooves 29. By doing in this way, the optical fiber strands 3a, 3b, 3c, and 3d can be aligned by the application roll 17a, and the adhesive member 5 can be applied. Therefore, the V groove roll 15 is not always necessary.

  As described above, according to the present embodiment, it is easy to synchronize the linear velocity of the optical fiber and the application of the adhesive member 5, and it is possible to cope with a high linear velocity. Further, the adhesive member 5 is pushed out to the outer peripheral surface of the application roll 17 by the die 31. That is, the adhesive member 5 is held inside the application roll 17 except during application. Therefore, compared with the case where the adhesive member 5 is held on the outer peripheral surface of the application roll 17, the adhesive member 5 is not blown away by the centrifugal force due to the rotation of the application roll 17.

  Further, the optical fiber strands 3a, 3b, 3c, and 3d are aligned at a predetermined interval by the V-groove roll 15 or the coating roll 17a. Therefore, the adhesive member 5 can be reliably applied between the optical fiber strands 3a, 3b, 3c, and 3d.

  The die 31 is provided in a tapered shape. For this reason, the pressure of the adhesive member 5 can be raised and the adhesive member 5 can be reliably extruded from the application hole 25. At this time, a side wall 27 is formed in the opening of the coating roll 17. For this reason, it is possible to prevent the adhesive member 5 pushed and spread in the width direction of the application roll 17 by the dice 31 from flowing out from the opening of the application roll 17.

  Thus, according to the present invention, a plurality of optical fiber strands can be intermittently joined in a staggered manner. Therefore, the optical fiber ribbon can be manufactured at high speed.

  In the present invention, the coating roll 17b shown in FIG. 9 can also be used. FIG. 9A is a perspective view of the coating roll 17b, and FIG. 9B is an enlarged view of the coating hole 25a. The coating roll 17b has substantially the same configuration as the coating roll 17, but the form of the coating hole is different.

  The application roll 17 b is provided with an application hole 25 a instead of the application hole 25. The application hole 25a is not a single continuous long hole, but a plurality of small holes 35 arranged in a line. That is, the coating hole 25a is formed by continuously arranging a plurality of small holes 35 with a predetermined width and a predetermined length.

  Thus, by using the application hole 25a instead of the application hole 25, the extrusion amount of the adhesive member 5 is stabilized. For example, in the case of the coating hole 25, the adhesive member 5 is not only pushed out of the coating roll 17 (on the side of the optical fiber strand) but also pushed out in the forming direction of the coating hole 25. For this reason, there is a possibility that the amount of the adhesive member 5 to be pushed out is not stable depending on the position of the application hole 25. However, since each small hole 35 is independent in the application hole 25a, a substantially constant adhesive member 5 is pushed out from each small hole 35. Therefore, a substantially constant amount of the adhesive member 5 can be pushed out to the application hole 25a (the formation range of the small holes 35). For this reason, the application amount of the adhesive member to the optical fiber is stabilized.

  Moreover, in this invention, as shown in FIG. 10, you may arrange | position so that the application | coating roll 17b may be pinched | interposed with a pair of V groove roll 15. FIG. In this case, the optical fiber strands 3a, 3b, 3c, and 3d are in contact with the coating roll 17b. In FIG. 10, other coating rolls 17 and 17a may be used instead of the coating roll 17b.

  Moreover, in this invention, as shown in FIG. 11, you may make it press the die | dye 31 with the predetermined | prescribed load toward the extrusion direction of the adhesive member 5. As shown in FIG. In the example of FIG. 11, an air cylinder 37 is provided on the arm that holds the die 31. The air cylinder 37 presses the die 31 with a constant load toward the application side of the adhesive member 5 to the optical fiber strands 3a, 3b, 3c, and 3d. In FIG. 11, other application rolls 17 a and 17 b may be used instead of the application roll 17. Further, instead of the air cylinder 37, an elastic member such as a spring may be provided.

Examples of the present invention are shown below.
Example 1
Four fibers were run with the optical fiber tape core manufacturing apparatus 10 shown in FIGS. 3 and 4 to evaluate whether or not the tape core could be manufactured. A V-groove roll shown in FIG. 5A was used for aligning the fibers. The application roll shown in FIG. 9 was installed at a position facing the V-groove roll. The V-groove roll and the application roll were connected to a motor via a gear or the like, and the fiber traveling speed and the rotational speed of both rolls were set to be approximately the same.

  The groove interval on the V groove roll was 0.5 mm, and the groove depth was 0.1 mm. The discharge holes on the coating roll had an outer diameter of 0.3 mm and a hole pitch of 0.6 mm. The circumferential lengths of the V groove roll and the coating roll were both 320 mm, and the distance between both rolls was 0.4 mm. A die (pressure part) made of resin or metal was placed in the coating roll. The die was installed so that the interval between the inner surface of the coating roll and the die was narrowed by the rotation of the roll. In this case, the distance between the inner surface of the coating roll and the die was set to 1 mm. The closest contact point is the lowest end in FIG.

  An ultraviolet curable resin having a viscosity of 2000 cP was used as the coating material, and this was supplied into the coating roll by a pressure tank. The tape core wire formed by changing the traveling speed of the fiber to 200, 400, 600 m / min, and changing the distance between the inner surface of the coating roll and the pressing portion to 1.6, 1.3, 1.0 mm accordingly. As a result of observation, it was possible to realize intermittent application and intermittent bonding between the fibers.

(Example 2)
The same evaluation as in Example 1 was performed except that the application roll shown in FIG. 8 was used instead of the V-groove roll and application roll used in Example 1. In addition, the V groove interval on the roll was 0.5 mm, and the groove depth was 0.1 mm. The application hole of the application roll was configured as shown in FIG. Discharge holes were formed between the V grooves on the roll, and the discharge holes had an outer diameter of 0.3 mm and a hole pitch of 0.6 mm. The circumference of the coating roll was 320 mm. The pressurizing part in the coating roll and the coating agent used are the same as in Example 1.

  Tape running cords formed by changing the traveling speed of the fiber to 200, 400, and 600 m / min, and changing the distance between the inner surface of the coating roll and the pressing portion to 1.6, 1.3, and 1.0 mm accordingly. As a result, intermittent coating between the fibers and intermittently bonded tape core wire were realized.

(Example 3)
Evaluation was performed in the same manner as in Example 1 except that the coating roll shown in FIG. 9 was installed between two V-groove rolls as shown in FIG. That is, the coating roll was brought into contact with the fiber. The application roll is connected to a motor through gears, etc., and the traveling speed of the fiber and the rotation speed of both rolls are set to be approximately the same. I did it. The groove interval on the V groove roll was 0.5 mm, and the groove depth was 0.1 mm. The discharge holes on the coating roll had an outer diameter of 0.3 mm and a hole pitch of 0.6 mm. The circumferential length of the V groove roll was 100 mm, and the circumferential length of the coating roll was 320 mm. The pressurizing part in the coating roll and the coating agent used are the same as in Example 1.

  Tape running cords formed by changing the traveling speed of the fiber to 200, 400, and 600 m / min, and changing the distance between the inner surface of the coating roll and the pressing portion to 1.6, 1.3, and 1.0 mm accordingly. As a result, intermittent coating between the fibers and intermittently bonded tape core wire were realized.

Example 4
As shown in FIG. 11, it was set as the structure similar to Example 1 except having connected the air cylinder to the die | dye. The groove interval on the V groove roll was 0.5 mm, and the groove depth was 0.1 mm. The discharge holes on the coating roll had an outer diameter of 0.3 mm and a hole pitch of 0.6 mm. The circumferential lengths of the V groove roll and the coating roll were both 320 mm, and the distance between both rolls was 0.4 mm. The pressurizing part in the coating roll and the coating agent used are the same as in Example 1.

  As shown in FIG. 11, an air cylinder was connected to the pressurizing unit, and the pressurizing unit was pressed with a constant load in the direction of the coating roll. Moreover, the board | plate material for avoiding a contact of a pressurization part and an application | coating roll was provided.

  When the traveling speed of the fiber was changed to 200, 400, and 600 m / min, the load applied to the pressurizing part was changed to 120, 240, and 360 g, and the formed tape core wire was observed. The tape core wire, which was intermittently applied and adhered, could be realized.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

DESCRIPTION OF SYMBOLS 1 ... Optical fiber ribbon 3a, 3b, 3c, 3d ... Optical fiber 5 ... Adhesive member 10 ... Optical fiber ribbon manufacturing apparatus 11a, 11b, 11c, 11d ... Supply section 13a, 13b, 13c, 13d ......... Alignment roll 15 ......... V-groove roll 17, 17a, 17b ......... Application roll 19 ......... Push-up roll 21 ......... Alignment section 23 ......... UV irradiation section 23 ......... Adhesive member holding parts 25, 25a ......... Hole 27 ......... Side wall part 29 ......... V-groove 31 ......... Dies 33 ......... Adhesive member supply part 35 ......... Small hole 35 ......... Air cylinder

Claims (5)

A method of manufacturing an optical fiber ribbon in which a plurality of optical fibers are intermittently bonded in a longitudinal direction,
A coating roll having a space inside and having a plurality of coating holes communicating with the space on the outer peripheral surface;
A pressurizing part disposed in the space;
An adhesive member supply section for supplying an adhesive member to the space;
Using an optical fiber ribbon manufacturing apparatus having
A plurality of the application holes are intermittently formed in the circumferential direction on the outer peripheral surface of the application roll, and a plurality of the application holes are provided in the width direction.
The coating hole of a predetermined length is configured by arranging a plurality of small holes,
The pressure part is fixed in the vicinity of the application position of the adhesive member to the optical fiber,
While rotating the application roll, the adhesive member supply unit supplies the adhesive member to the space, and the pressure unit extrudes the adhesive member from the application hole to the outer peripheral surface,
An optical fiber ribbon manufacturing method, wherein an adhesive member is intermittently applied between a plurality of the optical fiber strands arranged at a predetermined interval, and the optical fiber strands are bonded to each other.   The pressurizing unit is configured by a rigid body disposed in a space inside the coating roll, and the rigid body is configured such that a gap between the rigid body and the inner surface of the coating roll is gradually narrowed with respect to a rotation direction of the coating roll. 2. The method of manufacturing an optical fiber ribbon according to claim 1, wherein an adhesive member that is provided on the outer periphery and is moved by the rigid body along with the rotation of the coating roll is extruded from the coating hole to the outer peripheral surface.   3. The plurality of optical fiber strands are aligned at a predetermined interval by a backup roll having a V-groove before an adhesive member is applied by the application roll. 4. Manufacturing method of optical fiber ribbon.   4. The adhesive member is applied to the plurality of optical fiber strands in a state of being aligned at a predetermined interval by a V-groove formed on the application roll. The manufacturing method of the optical fiber tape core wire of description. An optical fiber tape manufacturing apparatus for intermittently bonding a plurality of optical fiber strands in the longitudinal direction,
A coating roll having a space inside and having a plurality of coating holes communicating with the space on the outer peripheral surface;
A pressurizing part disposed in the space;
An adhesive member supply section for supplying an adhesive member to the space;
Comprising
A plurality of the application holes are intermittently formed in the circumferential direction on the outer peripheral surface of the application roll, and a plurality of the application holes are provided in the width direction.
The coating hole of a predetermined length is configured by arranging a plurality of small holes,
The pressure member fixed in the vicinity of the application position of the adhesive member to the optical fiber strand can extrude the adhesive member moving with the rotation of the application roll from the application hole to the outer peripheral surface. An apparatus for manufacturing an optical fiber ribbon.

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