CN109116489B - fiber optic cable - Google Patents

Abstract

The invention discloses an optical cable, comprising: a reinforcing member; a skeleton, which is sheathed on the reinforcing member, at least three installation grooves are evenly distributed on the outer side of the frame around the axial direction of the reinforcing member, and each installation groove has a notch at one end away from the reinforcing member; The optical fiber ribbon is installed in the installation groove; a plurality of cover plates are matched with the notches to cover the corresponding installation grooves, and at least one cover plate has a magnetic medium; the water-blocking package tape is outsourced on the outside of the skeleton and the cover plate; The sheath is wrapped on the outside of the water-blocking tape. The cover plate of the present invention has two functions: one is to cover the installation groove to prevent the water-blocking tape from being embedded in the installation groove, which affects the quality of the optical cable; The installation groove can realize the targeted stripping operation.

Description

fiber optic cable

This application is a divisional application with an application date of April 14, 2016, an application number of 201610231010.5, and the name of the invention "optical cable".

technical field

The invention relates to the field of optical fiber communication, in particular to optical cables.

Background technique

The skeleton optical cable includes: a strength member, a skeleton with an installation groove, an optical fiber ribbon located in the installation groove, a water-blocking tape covering the skeleton, and an outer sheath covering the water-blocking tape. In order to facilitate identification, it is usually achieved by setting marking lines or extruding rib marks.

Among them, the marking line will gradually fade over time, which will bring great inconvenience to future maintenance; because the rib marking is a narrow strip extruded together with the skeleton, it often occurs intermittently. It is easy to cause poor extrusion of the skeleton.

The biggest advantage of the skeleton optical cable is that it is easy to branch, which can complete the branching of optical fibers or optical fiber ribbons without damaging the optical cable to the greatest extent. However, during construction, due to the outer sheath on the outside of the skeleton, in order to achieve the purpose of branching, the construction personnel can only achieve the purpose of identifying the required optical fiber ribbon by stripping at least a whole circle of the sheath, and then strip the skeleton groove. To realize the branching of the optical fiber or the optical cable, this will destroy the overall structure of the optical cable, so that the grooves that do not need to be damaged are also stripped.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention proposes an optical cable. It solves the problem that when the existing optical cable is branched, the entire sheath needs to be stripped to identify the required optical fiber ribbon.

The technical scheme adopted by the present invention is as follows:

An optical cable comprising:

reinforcement;

a skeleton, which is sheathed on the reinforcing piece, the outer side of the skeleton is evenly distributed with at least three installation grooves around the axial direction of the reinforcing piece, and the end of each installation groove away from the reinforcing piece has a notch;

an optical fiber ribbon, installed in the installation slot;

a plurality of cover plates, matched with the notches, covering the corresponding installation grooves, and at least one of the cover plates has a magnetic medium;

The water-blocking tape is outsourced on the outside of the skeleton and the cover plate;

The outer sheath is wrapped on the outer side of the water blocking bag.

The cover plate has two functions, one is to cover the installation groove to prevent the water-blocking tape from being embedded in the installation groove and affect the quality of the optical cable; the other is to facilitate the positioning of the cover plate with magnetic medium when the optical cable is branched, and to determine the installation groove that needs to be opened. Specifically, in actual use, the magnetic medium is magnetic, and the construction personnel can detect the position of the corresponding installation slot of the optical cable through a detection device. The detection device includes a power supply, a Hall sensor and an indicator light in series. When the sensor is close to the installation slot corresponding to the magnetic medium, the indicator light will be on, so that the position can be quickly determined and targeted peeling can be performed.

Optionally, the cover plate is arc-shaped, and after the cover plate is matched with the frame, the outer side wall of the cover plate is matched with the outer side wall of the frame. That is, the outer contour of the cross section of the cover plate and the skeleton forms a standard circle.

Optionally, a side of the cover plate with the magnetic medium facing away from the reinforcing member has a groove, and the magnetic medium is fixed in the groove.

This structural form can not only prevent the magnetic medium from entering the installation groove and affect the optical fiber ribbon, but also make the magnetic medium as close to the outer sheath as possible, so as to facilitate the detection of the detection equipment.

Optionally, the magnetic medium is magnetic powder, and the magnetic powder is fixed in the groove by an adhesive.

Optionally, the manufacturing method of the cover plate with the magnetic medium includes the following steps:

1) A cover plate with grooves is made by mold injection;

2) Cool the cover plate through the cooling water tank;

3) Dry the cover plate to remove the moisture on the surface of the cover plate;

3) Brush the adhesive into the groove with a glue brush;

4) The magnetic powder is sprayed in the groove, and the magnetic powder is relatively fixed to the groove by the adhesive;

5) Blow air on the surface of the cover plate through the nozzles arranged on both sides of the groove to remove the magnetic powder at the non-groove of the cover plate.

Apply glue first and then spray the magnetic powder in the groove, so that the magnetic powder is relatively fixed with the groove through the adhesive. This process is simple and reliable; the nozzles arranged on both sides of the groove can quickly and effectively remove the non-groove parts of the cover plate The magnetic powder can ensure that the non-grooves of the cover plate are clean and tidy, and prepare for the subsequent process of coating the water-blocking tape.

Optionally, the glue brush in the step 3) includes:

brush body;

bristles, fixed on the brush body;

A plurality of glue feeding branch pipes distributed at intervals are arranged on the brush body, one end of the glue feeding branch pipe is connected with the bristles, and the other end passes through the brush body;

The glue conveying main pipe is communicated with one end of each glue conveying branch pipe passing through the brush body.

In actual use, the glue delivery main pipe is connected to the glue tank through the glue pump, and the glue delivery main pipe inputs the adhesive into the bristles through the glue delivery branch pipe, so that the bristles continuously coat the grooves.

Optionally, the groove includes a bottom wall and inclined side walls on both sides of the bottom wall, and the bristles extend into the groove and are in contact with the bottom wall and the inclined side walls of the groove.

This structural form can prevent the adhesive from being coated outside the groove, and can ensure the cleanliness of the non-groove on the cover plate.

The beneficial effects of the invention are as follows: the cover plate has two functions, one is to cover the installation groove to prevent the water-blocking tape from being embedded in the installation groove and affect the quality of the optical cable; Determine which mounting slot needs to be opened.

Description of drawings:

Fig. 1 is the structural representation of the optical cable of the present invention;

Figure 2 is a schematic structural diagram of a reinforcement and a skeleton;

Fig. 3 is the structural representation of cover plate;

4 is a schematic structural diagram of a cover plate with a magnetic medium;

5 is a cross-sectional view of a cover plate with a magnetic medium;

Fig. 6 is the gluing schematic diagram of the cover plate with magnetic medium;

Fig. 7 is the schematic diagram of blowing impurity removal of the cover plate with magnetic medium;

Figure 8 is a schematic diagram of the detection device.

The reference numbers in the figure are:

1. Reinforcement member, 2. Skeleton, 3. Mounting slot, 4. Optical fiber ribbon, 5. Cover plate, 6. Magnetic medium, 7. Outer sheath, 8. Notch, 9. Groove, 10. Sloped side wall , 11, bottom wall, 12, bristles, 13, brush body, 14, glue feeding branch pipe, 15, glue feeding main pipe, 16, glue brush, 17, nozzle, 18, power supply, 19, Hall sensor, 20, indicator light , 21, water-blocking tape.

Detailed ways:

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figures 1-4, an optical cable includes:

reinforcement 1;

The skeleton 2 is covered on the reinforcement, the outer side of the skeleton is evenly distributed with at least three installation grooves 3 around the axial direction of the reinforcement, and the end of each installation groove away from the reinforcement has a notch 8;

The optical fiber ribbon 4 is installed in the installation slot 3;

A plurality of cover plates 5 cooperate with the notches 8 to cover the corresponding installation grooves 3, and at least one cover plate 5 has a magnetic medium 6;

The water blocking tape 21 is outsourced on the outside of the skeleton 2 and the cover plate 5;

The outer sheath 7 is wrapped on the outside of the water blocking bag 21 .

As shown in FIG. 3 , in this embodiment, the cover plate 5 is arc-shaped, and after the cover plate is matched with the frame, the outer side wall of the cover plate is matched with the outer side wall of the frame. That is, the outer contour of the cross section of the cover plate and the skeleton forms a standard circle.

As shown in FIG. 4 , the side of the cover plate 5 with the magnetic medium 6 facing away from the reinforcing member 1 has a groove 9 , and the magnetic medium 6 is fixed in the groove. This structural form can not only prevent the magnetic medium from entering the installation groove and affect the optical fiber ribbon, but also make the magnetic medium as close to the outer sheath as possible, so as to facilitate the detection of the detection equipment.

In this embodiment, the magnetic medium 6 is magnetic powder, and the magnetic powder is fixed in the groove 9 by an adhesive.

In this embodiment, the manufacturing method of the cover plate 5 with the magnetic medium includes the following steps:

1) A cover plate with grooves is made by mold injection;

2) Cool the cover plate through the cooling water tank;

3) Dry the cover plate to remove the moisture on the surface of the cover plate;

3) Brush the adhesive into the groove with a glue brush;

4) The magnetic powder is sprayed in the groove, and the magnetic powder is relatively fixed to the groove by the adhesive;

5) Blow air to the surface of the cover plate through the nozzles 17 arranged on both sides of the groove to remove the magnetic powder at the non-groove of the cover plate, see Figure 7.

Apply glue first and then spray the magnetic powder in the groove, so that the magnetic powder is relatively fixed with the groove through the adhesive. This process is simple and reliable; the nozzles arranged on both sides of the groove can quickly and effectively remove the non-groove parts of the cover plate The magnetic powder can ensure that the non-grooves of the cover plate are clean and tidy, and prepare for the subsequent process of coating the water-blocking tape.

As shown in Figure 6, the glue brush 16 in step 3) includes:

brush body 13;

The bristles 12 are fixed on the brush body;

A plurality of glue feeding branch pipes 14 distributed at intervals are arranged on the brush body, one end of the glue feeding branch pipe is communicated with the bristles, and the other end passes through the brush body;

The glue conveying main pipe 15 communicates with one end of each glue conveying branch pipe passing through the brush body.

In actual use, the glue delivery main pipe is connected to the glue tank through the glue pump, and the glue delivery main pipe inputs the adhesive into the bristles through the glue delivery branch pipe, so that the bristles continuously coat the grooves.

As shown in FIGS. 5 and 6 , the groove 9 includes a bottom wall 11 and inclined side walls 10 on both sides of the bottom wall. The bristles 12 extend into the groove 9 and contact the bottom wall 11 and the inclined side walls 10 of the groove. This structural form can prevent the adhesive from being coated outside the groove, and can ensure the cleanliness of the non-groove on the cover plate.

The cover plate of the optical cable in this embodiment has two functions. One is to cover the installation groove to prevent the water-blocking tape from being embedded in the installation groove and affect the quality of the optical cable; The installation slot that needs to be opened, specifically, in actual use, because the magnetic medium is magnetic, the construction personnel can detect the position of the corresponding installation slot of the optical cable through a detection device. As shown in Figure 8, the detection device includes serial connection. The power supply 18, the Hall sensor 19 and the indicator light 20, when the Hall sensor is close to the installation slot corresponding to the magnetic medium, the indicator light will be on, so that the position can be quickly determined and targeted peeling can be performed.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of patent protection of the present invention. Any equivalent structural transformation made by using the contents of the description and accompanying drawings of the present invention can be directly or indirectly used in other related technical fields. All are similarly included in the protection scope of the present invention.

Claims (1)

1. An optical cable, comprising:

a reinforcement;

the framework is sleeved on the reinforcing piece in an sleeved mode, at least three mounting grooves are uniformly distributed on the outer side of the framework in the direction around the axis of the reinforcing piece, and one end, far away from the reinforcing piece, of each mounting groove is provided with a notch;

an optical fiber ribbon mounted in the mounting groove;

a plurality of cover plates which are matched with the notches and cover the corresponding mounting grooves, and at least one cover plate is provided with a magnetic medium;

the waterproof wrapping belt is wrapped outside the framework and the covering plate;

the outer sheath is wrapped outside the water-blocking wrapping tape;

the covering plate and the outer contour of the cross section of the framework form a standard circle;

one side of the covering plate with the magnetic medium, which faces away from the reinforcing piece, is provided with a groove, and the magnetic medium is fixed in the groove; the magnetic medium is magnetic powder which is fixed in the groove through a bonding agent;

the method of manufacturing a cover plate with magnetic media includes the steps of:

1) manufacturing a cover plate with grooves;

2) cooling the cover plate;

3) drying the covering plate to remove the water on the surface of the covering plate;

3) brushing the adhesive into the groove through a glue brush;

4) spraying magnetic powder in the groove, wherein the magnetic powder is relatively fixed with the groove through the adhesive;

5) and blowing air to the surface of the covering plate through nozzles arranged at two sides of the groove to remove the magnetic powder at the position of the covering plate, which is not the groove.

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