JP2003315641A - Method of manufacturing ribbon-laminated optical fiber drop cable and apparatus therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a ribbon-laminated optical fiber drop cable from having disordering of the array of coated optical fiber ribbons, jacketing material peeling of the coated optical fiber ribbons, and deterioration of optical fibers. <P>SOLUTION: The ribbon-laminated optical fiber drop cable 1 is constituted by uniting a long-sized optical element part 9, constituted by jacketing coated optical fiber ribbons 3 of two or more stacked ribbons and a 1st tensile body 5 which is arranged in parallel to the coated optical fiber ribbons 3 with a cable sheath 7 and a long-sized cable support wire part 15, constituted by coating a 2nd tensile body 11 with a sheath 13, in parallel to each other. When this ribbon stack type optical fiber drop cable 1 is manufactured by extrusion molding, two or more coated optical fiber ribbons 3 are arrayed while sandwiched between a plurality of guide bodies 33 so as to come into contact with each other and sent out to an extrusion head, so that the laminated coated optical fiber ribbons 3 are smoothly run through a passage hole of a nipple for extrusion molding. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for manufacturing a tape-laminated optical fiber drop cable.

[0002]

2. Description of the Related Art Conventionally, FTTH (Fiber to the Home)
That is, in order to be able to send and receive high-speed broadband information such as ultra-high-speed data at home or office, the optical fiber cable of the access system extended from the central office is used for the subscriber's home such as a building or general residence. Lines have been dropped and suitable fiber optic drop cables have been used to route them. That is, the optical fiber drop cable (outdoor line) is a cable used when the optical fiber is pulled into the home from the pole.

Referring to FIG. 7, in particular, the structure of the tape-laminated optical fiber drop cable 101 is such that, for example, a pair of conductive metal wires, for example, a diameter of 0 is provided on both sides of two or more laminated tape core wires 103. A tensile strength member 105 made of a steel wire of 0.4 mm is additionally provided. These are all PVC
The optical element portion 109 covered with a cable sheath 107 made of a thermoplastic resin such as a flame-retardant PE and a support wire 111 as a tensile strength member made of a metal wire, for example, a steel wire having a diameter of 1.2 mm, PVC or the like. A cable supporting wire portion 115, which is covered with a sheath 113 made of a thermoplastic resin such as flammable PE, is integrally connected to each other via a neck portion 117 which is parallel to each other and is narrowed.

A notch portion 119 for tearing the cable is provided on the side surface of the cable sheath 107 on the left-right direction side in FIG. 7 so as to take out the optical fiber core wire 103.

Referring to FIG. 6, there is shown a manufacturing line for molding the tape-laminated optical fiber drop cable 101. The tape core wire 103, the tensile strength member 105 and the support wire 111 are bobbins 121, 123 and 125, respectively. Is supplied to the inside of the extrusion head 131 of the extrusion molding machine 129 through the distributor 127. A pair of strength members 105 are arranged in parallel on both sides of the tape core wire 103 and are supplied to a predetermined position in the extrusion head 131 of the extrusion device 129, and the support wire 111 is also supplied to a predetermined position in the extrusion head 131. It

As shown in FIG. 8, the extrusion head 131 has a support wire 111 and a tensile strength member 10 in order from the left as shown in FIG.
5, a nipple 135 having through holes 133A, 133B, 133C and 133B through which the tape core wire 103 and the strength member 105 pass are provided. In addition, through hole 133A
Is a support wire 111, the through hole 133B is a tensile strength member 105, and the through hole 133C is a tape core wire 103 in which two or more sheets are laminated.

Further, the common thermoplastic resin for the cable sheaths 107 and 113 of the optical element portion 109 and the cable supporting wire portion 115 is extruded and covered at once in the extruding head 131, and both are fixed integrally. It That is, when the cable core 107 and the tensile strength member 105 are covered with the cable sheath 107, the support wire 111 is also covered with the sheath 113 in the extrusion head 131 at the same time. In this case, the cable sheath 107 and the sheath 113 are a common sheath.

[0008]

However, the conventional method for manufacturing the tape-laminated optical fiber drop cable 101 has the following problems.

(1) A plurality of laminated tape core wires 103
The array of is broken. Therefore, it becomes difficult to arrange the tape core wires 103 at predetermined positions, which causes a problem of deterioration of transmission loss characteristics, temperature characteristics, and mechanical characteristics. Further, since the plurality of tape core wires 103 are arranged without being in close contact with each other, the thermoplastic resin wraps around the laminated tape core wires 103, and the tape core wires 10
There is a problem that transmission loss characteristics, temperature characteristics, and mechanical characteristics are deteriorated because a slight bend is added to No. 3.

(2) A plurality of laminated tape core wires 103
It becomes difficult to wire everything through the hole 133C through the nipple 135 at once. Therefore, the tape core wire 103
However, there is a problem in that the coating material is peeled off by coming into contact with the through hole 133C of the nipple 135 and the tape core wire 103 itself is damaged, resulting in deterioration of transmission loss characteristics, temperature characteristics, and mechanical characteristics. Further, the coating material is peeled off when the tape core wire 103 comes into contact with the hole 133C of the nipple 135, and the tape core wire 103 itself is damaged, so that the optical fiber is broken during the extrusion molding, which hinders manufacturing. There was a problem that caused.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to allow two or more laminated tape core wires to smoothly pass through the through holes of an extrusion-molded nipple. It is an object of the present invention to provide a method and an apparatus for manufacturing a tape-laminated optical fiber drop cable capable of preventing the arrangement disorder, the stripping of the tape core coating material, and the deterioration of the fiber.

[0012]

In order to achieve the above object, a method of manufacturing a tape-laminated optical fiber drop cable of the present invention according to claim 1 is a tape core wire in which two or more sheets are laminated, and the tape core wire. A long optical element portion in which a first tensile strength member arranged in parallel is covered with a cable sheath, and a long cable supporting wire portion in which a second tensile strength member is covered with a sheath are integrated in parallel with each other. In the method for manufacturing a tape-laminated optical fiber drop cable,
When extrusion molding is performed by the extrusion head to cover the two or more tape core wires, the first tensile strength member, and the second tensile strength member with the resin of the cable sheath, the two or more tape core wires are closely attached to each other in advance. It is characterized in that it is sandwiched by a plurality of guide bodies so as to be forced and then sent out to the extrusion head.

Therefore, since two or more laminated tape core wires are sandwiched by a plurality of guide bodies in advance and delivered to the extrusion head in a state of being in close contact with each other, hunting of the laminated tape core wires is prevented and the tape core wires are laminated. It is possible to prevent the arrangement disorder of the tape core wires and the sneak of the resin between the tape core wires.

Further, since hunting of the tape core wire is prevented, the tape core wire is smoothly passed through the through hole of the extrusion head, and the covering material of the tape core wire caused by the contact with the above hole is formed. Degradation and accompanying deterioration, fatigue, damage, and breakage of the optical fiber during manufacturing can be prevented.

As a result of the above, since the tape core wire is not slightly bent, a tape laminated optical fiber drop cable having good transmission loss characteristics, temperature characteristics and mechanical characteristics can be manufactured.

According to a second aspect of the present invention, there is provided a method of manufacturing a tape-laminated optical fiber drop cable according to the first aspect of the present invention, wherein the plurality of guide bodies are two or more. It is characterized in that it is constituted by a vertical / horizontal direction guide body which is sandwiched and aligned from both vertical / horizontal directions orthogonal to the feeding direction of the tape core wire.

Therefore, since two or more tape core wires are vertically sandwiched and vertically aligned by the vertical / horizontal guide bodies constituting a plurality of guide bodies, they are aligned neatly.
More than one tape core wire is more surely and smoothly passed through the through hole of the extrusion head.

According to a third aspect of the present invention, there is provided a method of manufacturing a tape-laminated optical fiber drop cable according to the second aspect of the present invention, wherein the vertical / horizontal-direction guide body is longitudinal. It is composed of a guide body and a lateral guide body, and moreover, the two or more tape cores are vertically sandwiched by a vertical guide body, and then horizontally sandwiched by a horizontal guide body before being sent to an extrusion head. It is a feature.

Therefore, the two or more tape core wires are aligned with a simple structure in which the two or more tape core wires are vertically sandwiched by the vertical guide body and then laterally sandwiched by the horizontal guide body.

According to a fourth aspect of the present invention, there is provided a method of manufacturing a tape-laminated optical fiber drop cable according to the second aspect of the present invention, wherein the vertical / horizontal direction guide body has a longitudinal direction. It is composed of a guide body and a lateral guide body, and moreover, the two or more tape cores are sandwiched by the lateral guide body from the lateral direction, then sandwiched by the longitudinal guide body from the longitudinal direction, and then sent out to the extrusion head. It is a feature.

Therefore, the two or more tape cores are aligned with a simple structure in which the two or more tape cores are sandwiched laterally by the lateral guides and then vertically by the vertical guides.

According to a fifth aspect of the present invention, there is provided a tape laminated type optical fiber drop cable manufacturing apparatus in which a cable sheath comprises two or more laminated tape core wires and a first tensile strength member arranged in parallel with the tape core wires. In a device for manufacturing a tape-laminated optical fiber drop cable configured by integrating a long optical element portion covered with and a long cable supporting wire portion in which a second strength member is covered with a sheath in parallel with each other, An extruder including an extrusion head that coats the two or more tape core wires, the first tensile strength member, and the second tensile strength member with the resin of the cable sheath;
A plurality of guide bodies are provided on the front side of the extrusion molding machine that feeds out more than one tape core wire, and a plurality of guide bodies that are sandwiched and aligned so that the two or more laminated tape core wires are in close contact with each other. It is a thing.

Therefore, the same operation as in claim 1 is performed. Since two or more laminated tape core wires are preliminarily sandwiched by a plurality of guide bodies and delivered to the extrusion head in a state of being in close contact with each other, they are laminated. Hunting of the tape core wires is prevented, and the disorder of the arrangement of the laminated tape core wires and the sneak of the resin between the tape core wires are prevented.

Further, since the hunting of the tape core wire is prevented, the tape core wire is smoothly passed through the through hole of the extrusion head, and the tape core wire covering material caused by the contact with the above hole is formed. Degradation and accompanying deterioration, fatigue, damage, and breakage of the optical fiber during manufacturing can be prevented.

As a result of the above, since the tape core wire is not slightly bent, a tape laminated optical fiber drop cable having good transmission loss characteristics, temperature characteristics, and mechanical characteristics can be manufactured.

According to a sixth aspect of the present invention, in the tape laminated optical fiber drop cable manufacturing apparatus of the present invention, the plurality of guide bodies are two or more. It is characterized in that it is constituted by a vertical / horizontal direction guide body which is sandwiched and aligned from both vertical / horizontal directions orthogonal to the feeding direction of the tape core wire.

Therefore, the operation is the same as that of the second aspect, and two or more tape core wires are vertically sandwiched by the vertical / horizontal-direction guide bodies forming a plurality of guide bodies to be cleanly doubled in the vertical and horizontal directions. Since they are aligned, the two or more tape core wires are more surely and smoothly passed through the through holes of the extrusion head.

According to a seventh aspect of the present invention, in the tape laminated optical fiber drop cable manufacturing apparatus of the present invention, in the tape laminated optical fiber drop cable manufacturing apparatus of FIG. A vertical guide body that sandwiches two or more tape core wires from the vertical direction, and a horizontal guide body that sandwiches two or more tape core wires from the horizontal direction. These vertical guide body and horizontal guide body are formed. It is characterized in that one of the two or more tape core wires is arranged in front of the other in the feeding direction, and the other is arranged behind.

Therefore, two or more tape core wires are vertically sandwiched by the vertical guide bodies and then laterally sandwiched by the horizontal guide bodies, or two or more tape core wires are horizontally sandwiched by the horizontal guide bodies and then. Two or more tape cores are aligned with a simple structure in which they are vertically sandwiched by a vertical guide body.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

Referring to FIG. 2, the structure of the tape-laminated optical fiber drop cable 1 according to this embodiment has an optical fiber tape core wire 3 (hereinafter referred to as "tape core wire") in which an optical fiber is coated with a resin material. ) Is laminated in a plurality of two or more, and in this embodiment, two tape core wires 3 are laminated, and a pair of, for example, a conductive metal is formed on both sides of the two-layer tape core wires 3. A tensile strength member 5 made of a wire, for example, a steel wire having a diameter of 0.4 mm is additionally provided. These are collectively covered with a cable sheath 7 made of a thermoplastic resin such as polyvinyl chloride (PVC) or flame-retardant polyethylene (PE) to form an optical element section 9.

A support wire 11 made of a metal wire, for example, a steel wire having a diameter of 1.2 mm and serving as a tensile strength member is covered with a sheath 13 made of the same resin as the above-mentioned cable sheath 7 to form a cable support wire portion 15. It

The tape-laminated optical fiber drop cable 1 includes the optical element portion 9 and the cable supporting wire portion 15 described above.
Are parallel to each other and are integrally connected via a necked portion 17, and a notch portion 19 for cable tearing is provided on the side surface of the cable sheath 7 on the left and right direction side in FIG. 2 for taking out the optical fiber core wire 3. It is provided.

Next, a method of manufacturing the tape-laminated optical fiber drop cable 1 of the above embodiment and its apparatus will be described.

Referring to FIG. 1, there is shown a manufacturing line as a manufacturing device 21 for molding the tape-laminated optical fiber drop cable 1. The tape core wire 3, the tensile strength member 5, and the support wire 11 are each a bobbin. 23, 25 and 27 are supplied and sent to the inside of the extrusion head 33 of the extrusion molding machine 31 through the distributor 29.

Before the tape core wire 3 is sent to the extrusion head 33 after passing through the distributor 29, a plurality of guide bodies, such as a rotatable guide roller 35, are provided so that the two layers of the tape core wire 3 are brought into close contact with each other in advance. 2 layers of tape core wire 3
And is sent out to the above-mentioned extrusion head 33 after being sandwiched and aligned from both the vertical and horizontal directions orthogonal to the feeding direction.

A pair of tensile strength members 5 are arranged in parallel on both sides of the two-layered tape core wire 3 and are supplied to a predetermined position in the extrusion head 33 of the extrusion device 31, and the support wire 11 is also provided. It is supplied to a predetermined position in the extrusion head 33. As shown in FIGS. 3 (A) to 3 (C), the extrusion head 33 is arranged so that the support wire 11, the tensile strength member 5, the two-layer tape core wire 3, and the tensile strength member 5 are passed in order from the left. A nipple 39 having holes 37A, 37B, 37C is provided. In FIG. 3 (A), the tape core wire 3 has a hole 37C.
Is rectangular, in (B) the through hole 37C of the tape core wire 3 is elliptical, and in (C) the through hole 37C of the tape core wire 3 is rounded. A nipple 39 having a through hole 37C corresponding to the shape of the laminated tape core wire is used.

The through hole 37A is for passing the support wire 11, the through hole 37B is for the tensile strength member 5, and the through hole 37C is for passing the tape core wire 3 in which two or more sheets are laminated.

Further, the thermoplastic resin common to the optical element portion 9 and the cable sheaths 7 and 13 of the cable supporting wire portion 15 is extruded and covered collectively in the extruding head 33, and both are fixed integrally. It That is, when the cable core 7 and the strength member 5 are covered with the cable sheath 7, the support wire 11 is also covered with the sheath 13 in the mold at the same time. In this case, the cable sheath 7 and the sheath 13 are common sheaths.

With the above configuration, when the cable 1 is extrusion-molded, the guide rollers 3 are doubled in the longitudinal direction and the lateral direction with respect to the two-layer tape core wire 3 on the line as shown in FIG.
Since it is sandwiched by 5, the two laminated tape core wires 3 are neatly aligned. The same effect can be obtained with a tape core wire in which two or more sheets are laminated. As a result, the above-mentioned aligned two-layer tape core wire 3 is, for example, as shown in FIG.
The nipple 39 of (A) is smoothly passed through the hole 37C.

Therefore, a plurality of laminated tape core wires 3
It is possible to prevent the trouble phenomenon that the arrangement of the wires is disturbed, the coating material of the tape core wire 3 is peeled off, and the optical fiber is deteriorated due to it, and the transmission loss characteristics, distortion characteristics, temperature characteristics, and mechanical characteristics are excellent. It is possible to manufacture the tape laminated optical fiber drop cable 1.

Referring to FIGS. 4 and 5, the plurality of guide rollers 35 and a vertical guide body 41 sandwiching the two or more tape core wires 3 from the vertical direction orthogonal to the feeding direction. It is arranged as a vertical / horizontal guide body composed of a lateral guide body 43 that sandwiches two or more tape core wires 3 from the lateral direction.

For example, as shown in FIG. 4, the arrangement state of the plurality of guide rollers 35 is such that two or more tape core wires 3 are laminated by a lateral guide body 43 composed of a pair of guide rollers 35. 5 from the lateral direction, and then from the vertical direction by a vertical guide body 41 consisting of a pair of guide rollers 35 to align them and then send them out through the through hole 37C of the nipple 39 of the extrusion head 33, or as shown in FIG. As described above, the laminated tape core wires 3 are vertically sandwiched by the vertical guide body 41, then horizontally sandwiched by the horizontal guide body 43, and aligned to form the nipple 39 of the extrusion head 31. Even if it is sent to the through hole 37C, the same effect can be obtained, so that it does not matter.

Thus, even with a simple structure in which the laminated tape core wire 3 is sandwiched in the vertical and horizontal directions by the plurality of guide rollers 35 before and after the tape core wire 3 in the feeding direction, two or more laminated tape cores are provided. The lines 3 are effectively aligned.

In order to evaluate the effect of the above configuration,
A tape-laminated optical device in which two or more tape core wires 3 are laminated in each of a case where the guide roller 35 is installed and a case where the guide roller 35 is not installed on the production line used for extrusion molding of the tape-laminated optical fiber drop cable 1. A fiber drop cable 1 was prototyped and the characteristics of these tape-laminated optical fiber drop cables 1 were evaluated. The results are shown in Table 1.

[0046]

[Table 1] The transmission characteristics of the evaluation items in Table 1 are OT with a wavelength of 1.55 μm.
When the transmission loss is measured using DR, the transmission loss is 0.
0.25 to 0.30d when x exceeds 30 dB / km
B / km was rated as △, and 0.25 dB / km or less was rated as ○.

The temperature characteristic of the evaluation item is the wavelength l. 5
Temperature cycle from -30 to 70 using 5 μm OTDR
When the transmission loss was measured after three cycles with ° C as one cycle, the loss fluctuation amount from the beginning was 0.1
A value exceeding 0 dB / km is defined as x, and 0.05 to 0.10 dB /
The value of km is Δ, and the value of 0.05 dB / km or less is ○.

Further, the mechanical characteristics of the evaluation items are that when the lateral pressure, bending, twisting and impact are applied to the cable, the loss increase amount is 0.10 dB / km when monitored at a wavelength of 1.55 μm. If the value exceeds X, then 0.05-
A value of 0.10 dB / km was evaluated as Δ and a value of 0.05 dB / km or less was evaluated as ○.

As can be seen from the results in Table 1, since the guide rollers 35 are installed on the manufacturing line in both vertical and horizontal directions, hunting of the laminated tape core wire 3 can be prevented, so that the laminated tapes are laminated. It is possible to prevent the arrangement disorder of the core wires 3 and the wraparound of the resin between the tape core wires 3.

Further, since hunting of the laminated tape core wire 3 can be prevented, the laminated tape core wire 3 can be smoothly passed through the through hole 37C of the nipple 39, and as described above, the hole 35C. It is possible to prevent the peeling of the coating material of the tape core wire 3 resulting from the contact between the two and the accompanying deterioration, fatigue, damage and breakage of the optical fiber during the manufacturing.

From the above, as a result, it is possible to manufacture the tape-laminated optical fiber drop cable 1 having good transmission loss characteristics, temperature characteristics, and mechanical characteristics without adding a slight bend to the tape core wire. Also, by eliminating the disconnection of the optical fiber during manufacturing as described above,
The manufacturability of the tape laminated optical fiber drop cable 1 is improved.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes.

[0053]

As can be understood from the above description of the embodiment of the invention, according to the invention of claim 1, two or more tape core wires laminated in advance by a plurality of guide bodies are sandwiched between each other. Since it is fed to the extrusion head in a close contact state, it is possible to prevent hunting of the laminated tape cores, and prevent disorder of arrangement of the laminated tape cores and wraparound of the resin between the tape cores.

Further, since the hunting of the tape core wire can be prevented, the tape core wire can be smoothly passed through the through hole of the extrusion head, and the covering material of the tape core wire caused by the contact with the above hole is peeled off. Also, it is possible to prevent deterioration, fatigue, damage, and breakage of the optical fiber due to the manufacturing process.

From the above results, since a slight bending is not applied to the tape core wire, it is possible to manufacture a tape laminated optical fiber drop cable having good transmission loss characteristics, temperature characteristics and mechanical characteristics.

According to the second aspect of the present invention, two or more laminated tape core wires can be neatly aligned by vertically sandwiching them in the vertical and horizontal directions by the vertical and horizontal direction guide bodies constituting a plurality of guide bodies. , The laminated tape core wire can be more surely passed smoothly through the through hole of the extrusion head.

According to the third aspect of the present invention, two or more laminated tape cores have a simple structure in which they are vertically sandwiched by a vertical guide body and then laterally by a horizontal guide body, and two or more tape cores are provided. You can align the lines.

According to the invention of claim 4, a simple structure in which two or more laminated tape core wires are sandwiched laterally by a lateral guide body and then vertically by a longitudinal guide body, has a simple structure of two or more tape cores. You can align the lines.

According to the invention of claim 5, which is similar to the effect of claim 1, a plurality of guide bodies preliminarily sandwich two or more laminated tape core wires and feed them to the extrusion head in a state of being in close contact with each other. Therefore, it is possible to prevent hunting of the laminated cores of the tape, and prevent disorder of arrangement of the laminated cores of the tape and wraparound of the resin between the cores of the tape.

Further, since the hunting of the tape core wire can be prevented, the tape core wire can be smoothly passed through the through hole of the extrusion head, and the stripping of the coating material of the tape core wire caused by the contact with the above hole. Also, it is possible to prevent deterioration, fatigue, damage, and breakage of the optical fiber due to the manufacturing process.

From the above results, since a slight bend is not applied to the tape core wire, it is possible to manufacture a tape laminated optical fiber drop cable having good transmission loss characteristics, temperature characteristics and mechanical characteristics.

According to the invention of claim 6, which is the same as the effect of claim 2, two or more laminated tape core wires are formed in a vertical / horizontal direction guide body which constitutes a plurality of guide bodies. Since it can be double-sandwiched in the same direction and aligned neatly, the laminated tape core wire can be more reliably and smoothly passed through the through hole of the extrusion head.

According to the invention of claim 7, two or more tape cores are vertically sandwiched by a vertical guide body and then laterally sandwiched by a horizontal guide body, or two or more tape cores are transversely sandwiched. Two or more tape cores can be aligned with a simple structure of sandwiching the guide body in the horizontal direction and then the vertical direction guide body in the vertical direction.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is a schematic explanatory view showing a production line of a tape laminated optical fiber drop cable.

FIG. 2 shows an embodiment of the present invention and is a vertical cross-sectional view of a tape laminated optical fiber drop cable.

3 (A) to 3 (C) are plan views showing an example of a nipple of an extruder used in the embodiment of the present invention.

FIG. 4 is a perspective view showing an example of an arrangement state of a plurality of guide rollers.

FIG. 5 is a perspective view showing another example of an arrangement state of a plurality of guide rollers.

FIG. 6 is a schematic explanatory view showing a production line of a conventional tape laminated optical fiber drop cable.

FIG. 7 is a vertical cross-sectional view of a conventional tape laminated optical fiber drop cable.

FIG. 8 is a plan view showing an example of a nipple of an extrusion molding machine used in a conventional example.

[Explanation of symbols]

1 Tape laminated optical fiber drop cable 3 tape core wire 5 Strength member (first strength member) 7 cable sheath 9 Optical element section 11 Support line (second tensile strength body) 13 sheath 15 Cable support line 21 Manufacturing equipment 23,25,27 bobbins 29 minute board 31 Extruder 33 Extrusion head 35 Guide roller (guide body) 37A, 37B, 37C through hole 39 nipples 41 Vertical guide body 43 Lateral guide body

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kazunaga Kobayashi             1440 Rokuzaki, Sakura City, Chiba Prefecture Fujikura Ltd.             Sakura office (72) Inventor Keiji Ohashi             1440 Rokuzaki, Sakura City, Chiba Prefecture Fujikura Ltd.             Sakura office F-term (reference) 2H001 BB16 DD06 DD08 DD22 HH02                       KK17 MM01 MM02

Claims (7)

[Claims] 1. A long optical element part in which two or more laminated tape core wires and a first tensile strength member arranged parallel to the tape core wires are covered with a cable sheath, and a second tensile strength member is a sheath. In a method for producing a tape-laminated optical fiber drop cable configured by integrally integrating a long cable supporting wire portion covered with (4) with each other, the two or more tape core wires, a first tensile strength body, and a second tensile strength. When extrusion molding is performed by an extrusion head to cover the body with the resin of the cable sheath, the tape cores laminated in advance with two or more sheets are sandwiched by a plurality of guide bodies and aligned, and then the extrusion is performed. A method for manufacturing a tape-laminated optical fiber drop cable, which is characterized in that it is sent to a head. 2. The plurality of guide bodies are constituted by vertical / horizontal direction guide bodies that are sandwiched and aligned in both vertical and horizontal directions orthogonal to the feeding direction of the two or more tape core wires. The method for manufacturing a tape-laminated optical fiber drop cable according to claim 1. 3. The vertical / horizontal guide body is composed of a vertical guide body and a horizontal guide body, and further, the two or more tape core wires are sandwiched by the vertical guide body from the vertical direction, and then the horizontal guide body is sandwiched. The method for manufacturing a tape-laminated optical fiber drop cable according to claim 2, wherein the tape-laminated optical fiber drop cable is sandwiched by a direction guide body from the lateral direction and then sent out to an extrusion head. 4. The vertical / horizontal guide body is composed of a vertical guide body and a horizontal guide body, and further, the two or more tape core wires are sandwiched by the horizontal guide body from the horizontal direction, and then the vertical guide body. 3. The method for manufacturing a tape-laminated optical fiber drop cable according to claim 2, wherein the tape-laminated optical fiber drop cable is sandwiched by a direction guide body from a vertical direction and then sent out to an extrusion head. 5. A long optical element portion in which two or more laminated tape core wires and a first tensile strength member arranged parallel to the tape core wires are covered with a cable sheath, and a second tensile strength member is a sheath. In a device for manufacturing a tape-laminated optical fiber drop cable configured by integrally integrating a long cable supporting wire portion covered with the above in parallel with each other, the two or more tape core wires, a first tensile strength body, and a second tensile strength An extruder having an extrusion head for covering the body with a resin of a cable sheath, and the above-mentioned two or more sheets are laminated in advance on the front side of the extruder for feeding the two or more tape core wires to the extruder. An apparatus for manufacturing a tape-type optical fiber drop cable, comprising: a plurality of guide bodies that sandwich and align the tape core wires so as to be in close contact with each other. 6. The vertical and horizontal guide bodies are arranged such that the plurality of guide bodies are sandwiched and aligned in both vertical and horizontal directions orthogonal to the feeding direction of the two or more tape core wires. 6. The tape laminated optical fiber drop cable manufacturing apparatus according to claim 5. 7. The vertical / horizontal guide body vertically sandwiches the two or more tape core wires from the vertical direction, and the lateral guide body sandwiches the two or more tape core wires from the horizontal direction. The vertical guide body and the horizontal guide body are arranged such that one of them is arranged in front and the other is arranged behind in the feeding direction of the two or more tape cores. Item 6. A tape-laminated optical fiber drop cable manufacturing apparatus according to Item 6.