CN214335321U - Optical cable and manufacturing mold thereof - Google Patents

Abstract

The utility model relates to an optical fiber communication technical field, concretely relates to optical cable and manufacturing mould thereof. The optical cable includes: the optical unit comprises an optical unit, an outer sheath and an outer tensile element, wherein the outer sheath is sleeved outside the optical unit, and a plurality of axial sheath grooves are formed in the circumferential direction of the inner wall of the outer sheath; the outer tensile element is sleeved outside the light unit and extruded in the sheath groove of the outer sheath. The utility model discloses can solve among the prior art on the tensile force that the optical cable sheath receives can not effectively transmit tensile component, can produce relative movement between optical cable sheath and cable core, lead to optical cable sheath and inner structure to suffer the problem of serious destruction.

Description

Optical cable and manufacturing mold thereof

Technical Field

The utility model relates to an optical fiber communication technical field, concretely relates to optical cable and manufacturing mould thereof.

Background

In the process of construction and long-term use of the optical cable, the surface of the sheath can be under the action of tension. If the tensile force applied to the optical cable cannot be effectively transmitted to the tensile element, relative movement can be generated between the optical cable sheath and the cable core, and the optical cable sheath and the internal structure can be seriously damaged when the relative movement is serious.

How to transmit the tensile force from the surface of the sheath to the tensile element in the optical cable is an important influence factor for determining the construction characteristics of the optical cable and the service life of the optical cable. In order to effectively transmit the tensile force applied to the surface of the optical cable sheath to the tensile element inside the optical cable, sufficient friction force must exist between the sheath and the tensile element.

However, the conventional optical cable structure is designed to increase the friction between the sheath and the tensile element inside the optical cable through a compact optical cable structure. There are certain limitations to this approach. For example, for some optical cable products that cannot achieve a compact structure due to application requirements, product performance, or manufacturing process considerations, the friction between the optical cable and the internal tensile member is significantly insufficient.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the prior art, the utility model aims to provide an optical cable and mould is made to the same can solve among the prior art, and on the tensile element can not effectively be transmitted to the pulling force that the optical cable sheath receives, can produce relative movement between optical cable sheath and cable core, lead to optical cable sheath and inner structure to suffer the problem of serious damage.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

In one aspect, the utility model provides an optical cable, include:

a light unit;

the outer sheath is sleeved outside the optical unit, and a plurality of sheath grooves which are axially arranged are circumferentially arranged on the inner wall of the outer sheath;

and the outer tensile element is sleeved on the outer side of the light unit and extruded in the sheath groove of the outer sheath.

In some optional embodiments, the light unit further comprises an inner anti-protection component, wherein the inner anti-protection component is arranged between the light unit and the outer tensile element and abuts against the outer wall of the light unit and the inner wall of the outer tensile element.

In some optional embodiments, the internal armor assembly comprises:

an inner tensile element sleeved outside the light unit;

the inner sheath is sleeved on the outer side of the inner tensile element, a plurality of axial sheath protrusions are arranged on the outer wall of the inner sheath in the circumferential direction, and the sheath protrusions abut against the inner wall of the outer tensile element.

In some alternative embodiments, the sheath protrusion has a triangular shape in cross-section.

In some alternative embodiments, the sheath groove is triangular in cross-section.

In some alternative embodiments, the outer tensile element is an aramid or glass yarn piece.

On the other hand, the utility model provides a mould is made to optical cable, include:

the first inner die comprises a first discharge end, a plurality of axial inner die bulges are circumferentially arranged on the outer wall of the first discharge end, and a first through hole for allowing the optical unit and the outer tensile element to pass through together is formed in the first inner die;

and the first outer die is provided with a first discharge hole, and when the first discharge hole is sleeved on the protrusion of the inner die, a gap for enabling the outer sheath to penetrate through and form a sheath groove is reserved between the first discharge hole and the outer wall of the first discharge end.

In some optional embodiments, the first inner die further includes a first tightening portion connected to the first discharge end, and the first tightening portion is conical and has a tapered hole therein, which communicates with the first through hole.

In some optional embodiments, the first outer die is provided with a first tightening hole which is communicated with the first discharging hole and sleeved on the first discharging hole, and a gap is left between the first tightening hole and the first tightening part.

In some optional embodiments, the method further comprises:

the second inner die comprises a second discharge end, and a second through hole for allowing the optical unit and the inner tensile element to pass through together is formed in the second inner die;

And the second outer die is provided with a second discharge hole, a plurality of axial outer die grooves are circumferentially arranged on the inner wall of the second discharge hole, and when the second discharge hole is sleeved on the second discharge end, a gap for enabling the inner sheath to penetrate and form sheath protrusion is reserved between the second discharge end and the outer wall of the second discharge end.

Compared with the prior art, the utility model has the advantages of: this optical cable is equipped with a plurality of axial sheath recesses through the inner wall circumference of outer sheath, and outer tensile element extrudees in the sheath recess of oversheath 3, and the sheath recess can increase the area of contact of oversheath and outer tensile element, has the effect of pinning outer tensile element embedding oversheath for on the pulling force that the oversheath receives transmits outer tensile element more easily, guaranteed the optical cable life-span, reduced the construction and the service failure of optical cable. The sheath groove is formed in the circumferential direction of the inner wall of the outer sheath, so that the outer tensile element is sufficiently stressed, the using amount of the outer tensile element is saved, and the material cost is reduced. When the hardware is fixed, the outer sheath and the outer tensile element are in a close contact state. The optical cable structure does not need to be made compact, the temperature characteristic of the optical cable is guaranteed, and the production difficulty is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an optical cable according to an embodiment of the present invention;

fig. 2 is a schematic structural view of another optical cable according to an embodiment of the present invention;

fig. 3 is a schematic view of a mold for manufacturing a sheath groove according to an embodiment of the present invention;

fig. 4 is a schematic view of a mold for manufacturing a sheath protrusion according to an embodiment of the present invention.

In the figure: 1. a light unit; 2. an outer tensile element; 3. an outer sheath; 31. a sheath groove; 4. an internal armor assembly; 41. an inner tensile element; 42. an inner sheath; 421. a sheath protrusion; 5. a first inner mold; 51. a first discharge end; 52. inner mold bulges; 53. a first through hole; 54. a first tightening part; 6. a first outer mold; 61. a first discharge hole; 7. a second inner mold; 71. a second discharge end; 73. a second through hole; 8. a second outer mold; 81. a second discharge hole; 82. and (4) forming grooves in the outer die.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

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

As shown in fig. 1, the utility model provides an optical cable, include: a light unit 1, an outer tensile element 2 and an outer jacket 3.

The outer sheath 3 is sleeved outside the optical unit 1, a plurality of sheath grooves 31 axially arranged are circumferentially arranged on the inner wall of the outer sheath 3, and the outer tensile element 2 is sleeved outside the optical unit 1 and extruded in the sheath grooves 31 of the outer sheath 3.

This optical cable is equipped with a plurality of axial sheath recesses 31 through the inner wall circumference at outer sheath 3, and outer tensile element 2 extrudees in the sheath recess 31 of oversheath 3, and sheath recess 31 can increase the area of contact of oversheath 3 and outer tensile element 2, has the effect of pinning in embedding oversheath 3 with outer tensile element 2 for on the pulling force that oversheath 3 receives transmits outer tensile element 2 more easily, guaranteed the optical cable life-span, reduced the construction and the service failure of optical cable.

In this embodiment, the inner wall of the outer sheath 3 is circumferentially and uniformly provided with the plurality of axial sheath grooves 31 at intervals, so that the stress between the outer sheath 3 and the outer tensile element 2 is more uniform. The optical unit 1 is composed of tight-buffered fiber, loose-buffered fiber or micro-fiber bundle.

As shown in fig. 2, in some alternative embodiments, the optical cable further includes an inner protective member 4 disposed between the light unit 1 and the outer tensile member 2 and abutting against the outer wall of the light unit 1 and the inner wall of the outer tensile member 2. In this embodiment, the inner protective member 4 is disposed between the light unit 1 and the outer tensile member 2, so that the tensile property of the entire optical cable can be further improved.

In some alternative embodiments, the internal armor assembly 4 comprises: an inner tensile element 41 and an inner sheath 42, wherein the inner tensile element 41 is sleeved outside the light unit 1; the inner sheath 42 is sleeved outside the inner tensile member 41, a plurality of axial sheath protrusions 421 are circumferentially arranged on the outer wall of the inner sheath 42, and the sheath protrusions 421 abut against the inner wall of the outer tensile member 2.

In this embodiment, a plurality of axial sheath protrusions 421 are circumferentially arranged on the outer wall of the inner sheath 42, and the sheath protrusions 421 are abutted against the inner wall of the outer tensile member 2, so that the friction force between the inner sheath 42 and the outer tensile member 2 can be increased. In this example, the outer wall of the inner sheath 42 is provided with a plurality of axial sheath protrusions 421 at even intervals in the circumferential direction, so that the force between the inner sheath 42 and the outer tensile member 2 can be even. In addition, in other embodiments, several axial protrusions or grooves may be provided on the inner wall of the inner sheath 42 in the circumferential direction to increase the friction between the inner sheath 42 and the inner tensile member 41.

In some alternative embodiments, the sheath protrusions 421 have a triangular shape in cross-section. The sheath groove 31 has a triangular cross section. In this embodiment, the cross-section of the sheath protrusion 421 and the sheath groove 31 is designed to be triangular, so that the friction between the sheath and the tensile member can be better increased.

In some alternative embodiments, the outer tensile element 2 is an aramid or glass yarn piece. In the embodiment, the aramid fiber or glass yarn has high friction force and good tensile property, and can increase the friction force between the aramid fiber or glass yarn and the sheath.

Fig. 3 is a schematic view of a mold for manufacturing a sheath groove according to an embodiment of the present invention, in which a diagram in fig. 3 is a schematic view of a first inner mold, and B diagram in fig. 3 is a schematic view of a first outer mold. As shown in fig. 3, the utility model also provides an optical cable manufacturing mold, include: a first inner die 5 and a first outer die 6. The first inner die 5 comprises a first discharge end 51, a plurality of axial inner die protrusions 52 are circumferentially arranged on the outer wall of the first discharge end 51, and a first through hole 53 for allowing the optical unit 1 and the outer tensile element 2 to pass through together is formed in the first inner die 5; the first outer die 6 is provided with a first discharging hole 61, and when the first discharging hole 61 is sleeved on the inner die protrusion 52, a gap for the outer sheath 3 to pass through and form the sheath groove 31 is left between the first discharging hole 61 and the outer wall of the first discharging end 51.

In this embodiment, when the mold is used, the light unit 1 and the outer tensile member 2 are introduced into the extruder head together, passing through the first through hole 53 of the first inner mold 5; the thermoplastic material forming the outer sheath 3 passes through the gap between the first discharge hole 61 and the outer wall of the first discharge end 51, is extruded into a tubular shape, and is cooled and shaped into the outer sheath 3, and the first discharge hole 61 is sleeved on the inner mold protrusion 52, so that the inner wall of the outer sheath 3 forms a sheath groove 31. And the sheath groove 31 of the outer sheath 3 abuts on the outer tensile member 2 after the outer tensile member 2 passes through the first through hole 53. The sheath groove 31 can increase the contact area of the outer sheath 3 and the outer tensile element 2, and has the effect of locking the outer tensile element 2 embedded into the outer sheath 3, so that the tensile force borne by the outer sheath 3 is more easily transmitted to the outer tensile element 2, the service life of the optical cable is ensured, and the construction and use faults of the optical cable are reduced.

In some alternative embodiments, the first inner die 5 further includes a first tightening portion 54 connected to the first discharge end 51, the first tightening portion 54 having a conical shape and a tapered hole therein communicating with the first through hole 53.

In this embodiment, the first inner mold 5 further includes a first tightening portion 54 connected to the first discharging end 51, the first tightening portion 54 is conical, and a tapered hole communicated with the first through hole 53 is formed in the first tightening portion 54, such that the outer tensile element 2 is extruded to a certain extent when passing through the first inner mold 5, and is extruded on the sheath groove 31 of the outer sheath 3 when passing through the first through hole 53, so as to form a larger contact area with the sheath groove 31.

In some alternative embodiments, the first outer mold 6 is provided with a first tightening hole which is communicated with the first discharging hole 61 and is sleeved on the first discharging hole 61, and a gap is left between the first tightening hole and the first tightening part 54.

In this embodiment, the shape of the first tightening hole matches the shape of the first tightening part 54, so that the thermoplastic material forming the outer sheath 3 passes through the gap between the first discharge hole 61 and the outer wall of the first discharge end 51, is extruded into a tubular shape, and is cooled and shaped to form the outer sheath 3.

Fig. 4 is a schematic view of a mold for manufacturing a sheath protrusion according to an embodiment of the present invention, in which a diagram in fig. 4 is a schematic view of a second inner mold, and B diagram in fig. 4 is a schematic view of a second outer mold. As shown in fig. 4, in some alternative embodiments, the mold further comprises: a second inner die 7 and a second outer die 8, wherein the second inner die 7 includes a second discharge end 71, and a second through hole 73 for passing the optical unit 1 and the inner tensile element 41 together is formed in the second inner die 7; the second outer die 8 is provided with a second discharge hole 81, a plurality of axial outer die grooves 82 are circumferentially arranged on the inner wall of the second discharge hole 81, and when the second discharge hole 81 is sleeved on the second discharge end 71, a gap is left between the outer wall of the second discharge end 71 and the inner jacket 42 to pass through and form the jacket protrusion 421.

In manufacturing the sheath protrusion 421 of the inner sheath 42 using the second inner mold 7 and the second outer mold 8, the optical unit 1 and the inner tensile member 41 are introduced into the extruder head together, so as to pass through the second through hole 73 of the second inner mold 7; the thermoplastic material forming the inner sheath 42 is made to pass through the gap between the second discharge hole 81 and the outer wall of the second discharge end 71, extruded to form a tubular shape, and then cooled and shaped to form the inner sheath 42, because the inner wall of the second discharge hole 81 is circumferentially provided with a plurality of axial outer mold grooves 82, the second discharge hole 81 is sleeved on the second discharge end 71, and the inner sheath 42 passes through the gap to form the sheath protrusion 421. And the inner sheath 42 is sleeved on the inner tensile member 41 after the inner tensile member 41 passes through the second through hole 73. The friction between the inner sheath 42 and the outer tension member 2 can be increased by the engagement between the inner sheath 42 and the outer tension member 2 such that the sheath protrusions 421 are held against the inner wall of the outer tension member 2.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An optical cable, comprising:

a light unit (1);

the outer sheath (3) is sleeved on the outer side of the light unit (1), and a plurality of sheath grooves (31) which are axially arranged are formed in the circumferential direction of the inner wall of the outer sheath (3);

an outer tensile element (2) which is sleeved on the outer side of the light unit (1) and extruded in a sheath groove (31) of the outer sheath (3).

2. The optical cable of claim 1, wherein: the light unit further comprises an inner anti-protection component (4) which is arranged between the light unit (1) and the outer tensile element (2) and is abutted against the outer wall of the light unit (1) and the inner wall of the outer tensile element (2).

3. Optical cable according to claim 2, characterized in that the internal protective component (4) comprises:

an inner tensile element (41) which is sleeved outside the light unit (1);

the inner sheath (42) is sleeved on the outer side of the inner tensile element (41), a plurality of axial sheath protrusions (421) are arranged on the outer wall of the inner sheath (42) in the circumferential direction, and the sheath protrusions (421) are abutted to the inner wall of the outer tensile element (2).

4. The optical cable of claim 3, wherein the sheath protrusion (421) has a triangular shape in cross section.

5. Optical cable according to claim 1, characterized in that the sheath groove (31) has a triangular shape in cross-section.

6. Optical cable according to claim 1, characterized in that the outer tensile element (2) is an aramid or glass yarn piece.

7. A mold for manufacturing an optical cable, comprising:

the first inner die (5) comprises a first discharge end (51), a plurality of axial inner die protrusions (52) are arranged on the outer wall of the first discharge end (51) in the circumferential direction, and a first through hole (53) for enabling the optical unit (1) and the outer tensile element (2) to penetrate through together is formed in the first inner die (5);

the first outer die (6) is provided with a first discharging hole (61), and when the first discharging hole (61) is sleeved on the inner die protrusion (52), a gap for enabling the outer sheath (3) to penetrate through and form the sheath groove (31) is reserved between the first discharging hole and the outer wall of the first discharging end (51).

8. The mold according to claim 7, characterized in that said first inner mold (5) further comprises a first tightening portion (54) connected to said first discharge end (51), said first tightening portion (54) having a conical shape and having a tapered hole therein communicating with said first through hole (53).

9. The mold according to claim 8, characterized in that the first outer mold (6) is provided with a first tightening hole which is communicated with the first discharge hole (61) and is sleeved on the first discharge hole (61), and a gap is left between the first tightening hole and the first tightening part (54).

10. The mold of claim 7, further comprising:

a second inner die (7) comprising a second discharge end (71), wherein a second through hole (73) for allowing the optical unit (1) and the inner tensile element (41) to pass through together is arranged in the second inner die (7);

second external mold (8), it is equipped with second discharge opening (81), the inner wall circumference of second discharge opening (81) is equipped with a plurality of axial external mold recesses (82), works as second discharge opening (81) cover is established when on second discharge end (71), can with leave the clearance that makes inner sheath (42) pass and form sheath protrusion (421) between the outer wall of second discharge end (71).

Images