CN203311064U

CN203311064U - Tight-buffered 8-shaped mini-size optical fiber and mold

Info

Publication number: CN203311064U
Application number: CN2013203901782U
Authority: CN
Inventors: 张楼彬; 夏坤盛; 王建军; 柴琳; 刘法林; 陈曲
Original assignee: Hangzhou Futong Communication Technology Co Ltd
Current assignee: Hangzhou Futong Communication Technology Co Ltd
Priority date: 2013-07-01
Filing date: 2013-07-01
Publication date: 2013-11-27
Anticipated expiration: 2023-07-01

Abstract

The utility model discloses a tight-buffered 8-shaped mini-size optical fiber and a mold and belongs to the field of optical cable manufacturing technology. A prior tight-buffered optical cable is insufficient in rigidity. The tight-buffered 8-shaped mini-size optical fiber provided by the utility model includes a tight-buffered optical fiber and an aramid yarn coiled outside the tight-buffered optical fiber. Suspension wires are arranged in the direction of the tight-buffered optical fiber and the aramid yarn in an extending manner. An outer sheath having an 8-shaped cross section is arranged outside the suspension wires, the tight-buffered optical fiber and the aramid yarn layer in an extruded manner. The tight-buffered optical fiber and the aramid yarn layer are disposed on one side of the outer sheath while the suspension wires are disposed on the other side of the outer sheath. According to the utility model, the suspension wires and the aramid yarn bear stress together. Therefore, on one hand, tensile strength of the tight-buffered 8-shaped mini-size optical fiber is enhanced; on the other hand, the tight-buffered 8-shaped mini-size optical fiber is enabled to be applicable to indoor environment and outdoor environment. The tight-buffered 8-shaped mini-size optical fiber becomes suitable for erection methods such as outdoor overhead erection, network connection bridging erection and the like under a premise of being applicable to the indoor environment. And since the suspension wires are added, the rigidity of the optical cable is enhanced, so that pipe penetration in pipeline construction is facilitated. Outer diameter of the tight-buffered 8-shaped mini-size optical fiber is reduced effectively under a premise of guaranteeing optical cable quality, so that placing and application of the tight-buffered 8-shaped mini-size optical fiber are facilitated.

Description

Tight cover 8 word micro optical cable and moulds

Technical field

The utility model belongs to the fiber optic cable manufacture technology, specifically a kind of tight cover 8 word micro optical cable and moulds.

Background technology

The mechanical property of optical cable is mainly the tensile property of optical cable, general existing tight sleeve optic cable only carries out load by aramid yarn, the optical cable pliability is had a surplus but the rigidity deficiency, be only applicable to the limited ranges such as indoor, equipment connection, be not suitable for applying to outdoor and Access Network, be not suitable for yet built on stilts and little span fly across.

The utility model content

The technical assignment of the technical problems to be solved in the utility model and proposition is the defect that overcomes existing tight sleeve optic cable rigidity deficiency, and a kind of tight cover 8 word micro optical cable and moulds are provided.

For achieving the above object, tight cover 8 word micro optical cables of the present utility model, comprise tight tube fiber and be wrapped in the outer aramid yarn of tight tube fiber, it is characterized in that: extend in the same way and establish a messenger wire with described tight tube fiber, aramid yarn, described messenger wire, tight tube fiber, aramid yarn extrude the oversheath that xsect is the figure of eight outward, and described tight tube fiber, aramid yarn are positioned at the another side that one side of described oversheath, described messenger wire are positioned at described oversheath.

As the optimization technique means of above-mentioned tight cover 8 word micro optical cables, described tight tube fiber is outside optical fiber, to extrude plastic layer to form, and described optical fiber consists of sandwich layer and covering.Described messenger wire is antirust steel wire or galvanized strand wires.

For achieving the above object, mould of the present utility model, comprise internal mold and external mold, it is characterized in that: on described external mold, offer figure of eight through hole, on described internal mold, fix the sleeve pipe of two described figure of eight through holes of correspondence.

Optimization technique means as above-mentioned mould, described external mold has internal taper hole, described figure of eight through hole is positioned at the small end of described internal taper hole, and described internal mold has a frustum that can stretch into described internal taper hole, and described two sleeve pipes are positioned at the small end of described frustum.Between described internal mold and external mold, be provided with locating piece, described locating piece makes between described internal mold and external mold and forms the extrusion molding space that is communicated with described figure of eight through hole.

The beneficial effects of the utility model are: optical cable is by messenger wire and the common load of aramid yarn, one has increased optical cable tensile intensity, and its indoor and outdoor all can be used, and can apply under indoor prerequisite having guaranteed, also can apply to outdoor making somebody a mere figurehead, Access Network flies across waiting erection mode; Owing to having increased messenger wire, strengthened the rigidity of optical cable, the pipeline poling construction of being more convenient for; Under the prerequisite of guaranteeing the optical cable quality, effectively reduce cable outer diameter, be convenient to optical cable laying and use.

The accompanying drawing explanation

Fig. 1 is a kind of section structure schematic diagram of the utility model optical cable;

Fig. 2 is the structural representation of the utility model mould;

Fig. 3 is the schematic diagram of the utility model internal mold;

Fig. 4 is that the A-A of Fig. 3 is to cut-open view;

Fig. 5 is the schematic diagram of the utility model external mold;

Fig. 6 is that the B-B of Fig. 5 is to cut-open view;

The number in the figure explanation:

The 01-tight tube fiber, 11-optical fiber, 111-sandwich layer, 112-covering, 12-plastic layer;

The 02-aramid yarn;

The 03-messenger wire;

The 04-oversheath;

The 05-internal mold, 51-sleeve pipe, 52-frustum;

The 06-external mold, 61-figure of eight through hole, 62-internal taper hole;

The 07-locating piece;

08-extrusion molding space.

Embodiment

Below in conjunction with Figure of description, the utility model is described further.

Tight cover 8 word micro optical cables of the present utility model, as shown in Figure 1, it comprises tight tube fiber 01 and is wrapped in the outer aramid yarn 02 of tight tube fiber 01, with tight tube fiber 01, aramid yarn 02, extend in the same way and establish a messenger wire 03, outside messenger wire 03, tight tube fiber 10, aramid yarn 02, extrude the oversheath 04 that xsect is the figure of eight, tight tube fiber 01, aramid yarn 02 are positioned at one side of oversheath 04, the another side that messenger wire 03 is positioned at oversheath 04.Concrete, tight tube fiber 01 is outside optical fiber 11, to extrude plastic layer 12 to form, optical fiber 11 consists of sandwich layer 111 and covering 112.Messenger wire 03 is antirust steel wire or galvanized strand wires.

Mould of the present utility model, as shown in Fig. 2-6, it comprises internal mold 05 and external mold 06, on external mold 06, offers figure of eight through hole 61, on internal mold 05, fixes the sleeve pipe 51 of two corresponding figure of eight through holes 61.Concrete, external mold 06(is referring to Fig. 5-6) have internal taper hole 62, figure of eight through hole 61 is positioned at the small end of internal taper hole 62, internal mold 05(is referring to Fig. 3-4) have a small end that 52, two sleeve pipes 51 of frustum that can stretch into internal taper hole 62 are positioned at frustum 52.Between internal mold 05 and external mold 06, be provided with locating piece 07, locating piece 07 makes between internal mold 05 and external mold 06 and forms the extrusion molding space 80 that is communicated with figure of eight through hole 61.

While with this mould, manufacturing optical cable, as shown in Figure 2, messenger wire 03 is passed from a sheath that is positioned at top of internal mold 05, tight tube fiber 01, aramid yarn 02 are passed from a sheath that is positioned at below of internal mold 05, in extrusion molding space 08, clamp-on plastics, what from external mold 06 right side, draw is namely tight cover 8 word micro optical cables of the present utility model.

But by changing inside and outside nib footpath manufacture order core or multicore tight tube fiber, meet customer requirement, realize the optical cable product that indoor and outdoor is general.

Claims

1. tightly overlap 8 word micro optical cables, comprise tight tube fiber (01) and be wrapped in the outer aramid yarn (02) of tight tube fiber (01), it is characterized in that: extend in the same way and establish a messenger wire (03) with described tight tube fiber (01), aramid yarn (02), described messenger wire (03), tight tube fiber (01), aramid yarn (02) be outer extrudes the oversheath (04) that xsect is the figure of eight, and described tight tube fiber (01), aramid yarn (02) are positioned at the another side that one side of described oversheath (04), described messenger wire (03) are positioned at described oversheath (04).

2. tight cover 8 word micro optical cables according to claim 1 is characterized in that: described tight tube fiber (01) is outside optical fiber (11), to extrude plastic layer (12) to form, and described optical fiber (11) is by sandwich layer (111) and covering (112) formation.

3. tight cover 8 word micro optical cables according to claim 1, it is characterized in that: described messenger wire (03) is antirust steel wire or galvanized strand wires.

4. mould, comprise internal mold (05) and external mold (06), it is characterized in that: on described external mold (06), offer figure of eight through hole (61), on described internal mold (05), fix the sleeve pipe (51) of two described figure of eight through holes of correspondence (61).

5. mould according to claim 4, it is characterized in that: described external mold (06) has internal taper hole (62), described figure of eight through hole (61) is positioned at the small end of described internal taper hole (62), described internal mold (05) has a frustum (52) that can stretch into described internal taper hole (62), and described two sleeve pipes (51) are positioned at the small end of described frustum (52).

6. according to the described mould of claim 4 or 5, it is characterized in that: between described internal mold (05) and external mold (06), be provided with locating piece (07), described locating piece (07) makes between described internal mold (05) and external mold (06) and forms the extrusion molding space (08) that is communicated with described figure of eight through hole (61).