CN111508658A

CN111508658A - Photoelectric composite cable and forming method thereof

Info

Publication number: CN111508658A
Application number: CN202010336339.4A
Authority: CN
Inventors: 楚广虎; 陆春良; 何剑; 姚福荣; 王晨; 王波; 徐盛祥
Original assignee: Huawei Technologies Co Ltd; Jiangsu Hengtong Wire and Cable Technology Co Ltd
Current assignee: Huawei Technologies Co Ltd; Jiangsu Hengtong Wire and Cable Technology Co Ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-08-07
Anticipated expiration: 2040-04-27
Also published as: CN111508658B

Abstract

The application provides a photoelectric composite cable and a forming method thereof, and belongs to the field of photoelectric composite cables. The photoelectric composite cable comprises an outer protection layer and a core body, wherein the outer protection layer is coated on the outer side of the core body. The core includes electric unit, a plurality of light unit and a plurality of filler strip, and a plurality of light unit circumference interval distribution sets up a filler strip in the outside of electric unit, the clearance between every two adjacent light units, and the position corresponding with every filler strip is equipped with first hand and tears the breach on the outer table wall of outer protective layer. After tearing the outer protective layer through first hand tear breach, the packing strip will spill, alright take out the packing strip in the breach of tearing. After the filling strip is taken out, a gap exists between the two light units corresponding to the filling strip, the two light units can move in the outer protection layer, and the light units can be conveniently taken out from the torn gaps. The photoelectric composite cable is easy to take out the optical unit, and the taking-out process is time-saving and labor-saving.

Description

Photoelectric composite cable and forming method thereof

Technical Field

The application relates to the field of photoelectric composite cables, in particular to a photoelectric composite cable and a forming method thereof.

Background

The existing photoelectric composite cable is generally provided with a filling layer between the optical unit and the outer protective layer, after the outer protective layer is torn, the filling layer is required to be torn to take out the optical unit, the operation process is troublesome, and time and labor are wasted.

Disclosure of Invention

The embodiment of the application provides a photoelectric composite cable and a forming method thereof, which aim to solve the problem that time and labor are wasted in the operation process of taking out a light unit in the prior art.

In a first aspect, an embodiment of the present application provides an optical-electrical composite cable, including an outer protection layer and a core, where the outer protection layer is wrapped outside the core;

the core body comprises an electric unit, a plurality of optical units and a plurality of filling strips, the optical units are circumferentially distributed at intervals outside the electric unit, a filling strip is arranged in a gap between every two adjacent optical units, and a first hand tearing notch is arranged at a position corresponding to each filling strip on the outer surface wall of the outer protection layer.

In the technical scheme, the gap between every two adjacent light units is provided with the filling strip, and the filling strip can ensure the relative position of the two adjacent light units. Because the position that first hand torn the breach and set up is corresponding with the position of packing the strip, tear the breach through first hand and tear the outer protective layer after, the packing strip will spill, alright take out the packing strip in the breach of tearing. After the filling strip is taken out, a gap exists between the two light units corresponding to the filling strip, and the two light units can move in the outer protection layer, so that the light units can be conveniently taken out from the torn gaps. The photoelectric composite cable is easy to take out the optical unit, and the taking-out process is time-saving and labor-saving.

In addition, the photoelectric composite cable of the embodiment of the application also has the following additional technical characteristics:

in some embodiments of the present application, each of the filler strips has a first arc surface and a second arc surface which are oppositely disposed, the first arc surface is in contact fit with one of the two adjacent light units, and the second arc surface is in contact fit with the other of the two adjacent light units.

Among the above-mentioned technical scheme, the first arc surface of packing strip and the cooperation of the contact of one among two adjacent light units, the second arc surface and another light unit contact cooperation of packing strip, the packing strip of this kind of structure plays fine positioning action to two adjacent light units, guarantees to have definite position relation between two adjacent light units, can not take place the dislocation.

In some embodiments of the present application, the filler strip has a large end and a small end arranged oppositely in a radial direction of the electrical unit, the large end being farther from the electrical unit than the small end;

the two ends of the first arc surface extend to the big end and the small end respectively, and the two ends of the second arc surface extend to the big end and the small end respectively.

Among the above-mentioned technical scheme, the both ends of first arc surface extend to the main aspects and the tip of packing strip respectively, and the both ends of second arc surface extend to the main aspects and the tip of packing strip respectively, and the less end of main aspects of packing strip keeps away from in the electric unit, and this kind of structure makes and tears the breach from first hand and tear the back of tearing the outer protective layer, just can take out the packing strip very easily. When the small end of the filler strip is separated from two adjacent light units, the small end of the filler strip is deformed by the pressing force. Of course, during the process of removing the filler strip, the two adjacent light units will also be subjected to a pressing force from the filler strip, under which the filler strip can bring the two adjacent light units slightly outwards, so that the light units are more convenient to remove.

In some embodiments of the present application, an end surface of the small end abuts against an outer surface wall of the electric unit.

In the technical scheme, the end face of the small end of the filling strip abuts against the outer wall of the electric unit, and the filling strip can limit the relative movement of the electric unit and the optical unit, so that the electric unit and the optical unit have a determined position relation.

In some embodiments of the present application, a protruding portion abutting against an inner surface wall of the outer protection layer is provided on an end surface of the large end.

In the technical scheme, the broken end face of the filling strip is provided with the protruding part which is abutted against the inner surface wall of the outer protection layer, and the filling strip can limit the relative movement of the light unit and the outer protection layer, so that the light unit and the outer protection layer have a determined position relation.

In some embodiments of the present application, the first tear notch is V-shaped.

Among the above-mentioned technical scheme, first hand tears the breach for the V-arrangement, and the outer protective layer is torn more easily to the first hand of this kind of structure tearing the breach.

In some embodiments of the present application, the light unit comprises a first inner protective layer, a first filler layer, and at least one optical fiber;

the at least one optical fiber is arranged in the first inner protective layer, and the first filling layer is filled in a gap between the first inner protective layer and the at least one optical fiber;

and a second hand-tearing notch is formed in the outer surface wall of the first inner protection layer.

In the technical scheme, the first inner protective layer can protect the optical fiber; the first filling layer between the first inner protection layer and the optical fiber can ensure the relative position of the optical fiber and the first inner protection layer, so that the optical fiber cannot move in the first protection layer; the outer surface wall of the first inner protection layer is provided with a second hand-tearing notch, so that the first inner protection layer can be torn conveniently.

In some embodiments of the present application, the electrical unit includes a second inner protective layer, a second filling layer, and a conductive core, the conductive core is disposed in the second inner protective layer, and the second filling layer is filled between the second inner protective layer and the conductive core.

In the technical scheme, the second inner protection layer can protect the conductive core; the second filling layer between the second inner protection layer and the conductive core can ensure the relative position of the conductive core and the second inner protection layer, so that the conductive core cannot move in the second inner protection layer.

In some embodiments of the present application, the conductive core includes a reinforcing core and a plurality of conductive wires stranded outside the reinforcing core.

Among the above-mentioned technical scheme, electrically conductive core includes the reinforced core and twists in a plurality of wires in the reinforced core outside, and the electrically conductive core of this kind of structure has very high intensity, has improved electrically conductive core's tensile ability.

In a second aspect, an embodiment of the present application provides a method for molding an optical-electrical composite cable, including the following steps:

a plurality of light units are circumferentially distributed at intervals on the outer side of the electric unit positioned at the central position, and a filling strip is filled between every two adjacent light units;

arranging an outer protective layer outside a core body composed of the electric units, all the light units and all the filling strips;

and a first hand-tearing notch is formed in the position, corresponding to each filling strip, on the outer surface wall of the outer protection layer.

The photoelectric composite cable molded by the molding method can be used for conveniently taking out the optical unit, and the taking-out process is time-saving and labor-saving.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an optical-electrical composite cable provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a first possible structure of the light unit shown in FIG. 1;

FIG. 3 is a schematic diagram of a second possible structure of the light unit shown in FIG. 1;

FIG. 4 is a schematic structural view of the electrical unit shown in FIG. 1;

FIG. 5 is a schematic structural diagram of the filler strip shown in FIG. 1;

fig. 6 is a schematic view of a first possible structure of an optical-electrical composite cable according to another embodiment of the present application;

fig. 7 is a schematic diagram of a second possible structure of an optical-electrical composite cable according to another embodiment of the present application;

fig. 8 is a schematic view of a third possible structure of an optical/electrical composite cable according to another embodiment of the present application.

Icon: 100-photoelectric composite cable; 10-an outer protective layer; 11-first hand tear notch; 111-a first bevel; 112-a second bevel; 20-a core; 21-an electrical unit; 211-a second inner protective layer; 212-a second fill layer; 213-a conductive core; 2131-a reinforcing core; 2132-a lead; 2133-a conductor; 2134-an insulating layer; 22-a light unit; 221-a first inner protective layer; 2211-second hand tear notch; 2212-third inclined plane; 2213-fourth slope; 222-a first fill layer; 223-an optical fiber; 23-a filler strip; 231-a first arc surface; 232-a second arc surface; 233-big end; 2331-a projection; 234-small end.

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. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Examples

As shown in fig. 1, an optical-electrical composite cable 100 includes an outer protection layer 10 and a core 20, where the outer protection layer 10 covers an outer side of the core 20.

The core 20 includes an electrical unit 21, a plurality of optical units 22 and a plurality of filler strips 23, the optical units 22 are circumferentially distributed at intervals outside the electrical unit 21, a filler strip 23 is disposed in a gap between every two adjacent optical units 22, and a first hand-tearing notch 11 is disposed at a position corresponding to each filler strip 23 on an outer surface wall of the outer protective layer 10.

In the above structure, one filler strip 23 is disposed in each gap between two adjacent light units 22, and the filler strips 23 can ensure the relative positions of the two adjacent light units 22. Since the first hand-tear notch 11 is disposed at a position corresponding to the position of the filling strip 23, after the outer protective layer 10 is torn through the first hand-tear notch 11, the filling strip 23 will leak out, and the filling strip 23 can be taken out from the torn notch. After the filling strip 23 is taken out, a gap exists between the two light units 22 corresponding to the filling strip 23, and the two light units 22 can move in the outer protective layer 10, so that the light units 22 can be conveniently taken out from the torn gap. The optical-electrical composite cable 100 is easy to take out the optical unit 22, and the taking-out process is time-saving and labor-saving.

The outer protective layer 10 mainly serves to protect the core 20, and may be made of various materials. As an example, the material of the outer protection layer 10 is halogen-free polyolefin with flame retardant capability.

The first hand-tearing slits 11 on the outer surface wall of the outer protective layer 10 extend to both ends of the outer protective layer 10 in the extending direction. The first hand-tearing notch 11 may have various structures, and in this embodiment, the first hand-tearing notch 11 is V-shaped, that is, the first hand-tearing notch 11 is V-shaped on the cross section of the outer protection layer 10. The first hand-tear notch 11 of this configuration makes it easier to tear the outer protective layer 10. In other embodiments, the first tear notch 11 may have other configurations, for example, the first tear notch 11 is U-shaped.

Further, the outer protection layer 10 has a first inclined surface 111 and a second inclined surface 112 disposed at an included angle, and the first inclined surface 111 and the second inclined surface 112 together define the first hand-tearing gap 11. The included angle between the first inclined surface 111 and the second inclined surface 112 is 45-60 degrees.

The light unit 22 is a light-conducting means that can be of various configurations. Optionally, as shown in fig. 2 and fig. 3, the light unit 22 includes a first inner protection layer 221, a first filling layer 222, and at least one optical fiber 223, all the optical fibers 223 are disposed in the first inner protection layer 221, the first filling layer 222 fills gaps between the first inner protection layer 221 and all the optical fibers 223, and a second tear notch 2211 is disposed on an outer surface wall of the first inner protection layer 221.

The first inner protective layer 221 may protect the optical fiber 223. The first filling layer 22 between the first inner protection layer 221 and the optical fiber 223 can ensure the relative position of the optical fiber 223 and the first inner protection layer 221, so that the optical fiber 223 cannot move in the first protection layer; the outer wall of the first inner protection layer 221 is provided with a second tear notch 2211 for facilitating tearing of the first inner protection layer 221.

The optical fibers 223 in the first inner protective layer 221 may be one or more (including two). As an example, as shown in fig. 2, there is one optical fiber 223 in the first inner protection layer 221, the outer layer of the optical fiber 223 is the first filling layer 222, and the outer side of the first filling layer 222 is the first inner protection layer 221, and it can be understood that the first filling layer 222 and the first inner protection layer 221 are both ring-shaped. As an example, as shown in fig. 3, the optical fibers 223 in the first inner protective layer 221 are four, four optical fibers 223 are circumferentially spaced, and the first filling layer 222 is filled in the gaps between the four optical fibers 223 and the first inner protective layer 221, that is, the space inside the first inner protective layer 221 except the space occupied by the optical fibers 223 is filled in the first filling layer 222.

The first inner passivation layer 221 and the first filling layer 222 may be made of various materials. As an example, the material of the first inner protection layer 221 is halogen-free polyolefin with flame retardant capability, and the material of the first filling layer 222 is aramid.

The second tear slits 2211 on the outer surface wall of the first inner protection layer 221 extend to both ends of the first inner protection layer 221 in the extending direction. The second tear notch 2211 can have various structures, and in this embodiment, the second tear notch 2211 is V-shaped, that is, the second tear notch 2211 is V-shaped in the cross section of the first inner protective layer 221. The second tear notch 2211 of this structure makes it easier to tear the first inner protective layer 221. In other embodiments, the second tear notch 2211 can have other configurations, for example, the second tear notch 2211 has a U-shape.

Of course, the second tear notches 2211 on the outer wall of the first inner protection layer 221 may be one or more (including two), and as an example, two second tear notches 2211 are provided on the outer wall of the first inner protection layer 221, and the two second tear notches 2211 are spaced apart by 180 degrees.

Further, the first inner protection layer 221 has a third inclined surface 2212 and a fourth inclined surface 2213 arranged at an included angle, and the third inclined surface 2212 and the fourth inclined surface 2213 jointly define a second tear gap 2211. The included angle between the third inclined surface 2212 and the fourth inclined surface 2213 is 45-60 degrees.

Molding process of the light unit 22: the tightly-sleeved optical fiber 223 with the loosely-wrapped buffer layer is manufactured through a tight-sleeved processing technology, and the stripping force of the buffer layer and the tight-sleeved coating layer of the optical fiber 223 is not less than 1.8N and not more than 10N; the special production line for the tight-buffered optical fiber 223 is adopted, the optical fiber 223 adopts an active paying-off mode, the tension of the optical fiber 223 is ensured to be not more than 1N during production, and the influence of indoor temperature and air moisture on the tight-buffered optical fiber 223 is reduced through the optical fiber preheating adjusting device; the aramid fiber is surrounded on the outer sides of the tightly sleeved 1 or more optical fibers 223 through a multi-path aramid fiber pay-off machine and a branching board, and the whole is sent into an extruding machine together, so that a first inner protection layer 221 is formed on the outer layer; finally, a second hand-tearing notch 2211 is formed in the outer surface wall of the first inner protective layer 221. Of course, the second tear notch 2211 may be formed on the first inner protective layer 221 at the same time as the extrusion molding of the first inner protective layer 221.

In other embodiments, the light unit 22 may have other structures, for example, the first filling layer 222 is not disposed in the light unit 22, and the first inner protection layer 221 directly covers the outer side of the optical fiber 223.

The electrical unit 21 is an electrically conductive means, which may be of various configurations. Optionally, as shown in fig. 4, the electrical unit 21 includes a second inner protection layer 211, a second filling layer 212, and a conductive core 213, the conductive core 213 is disposed in the second inner protection layer 211, and the second filling layer 212 is filled between the second inner protection layer 211 and the conductive core 213.

The second inner protective layer 211 may protect the conductive core 213. The second filling layer 212 between the second inner protective layer 211 and the conductive core 213 may ensure the relative positions of the conductive core 213 and the second inner protective layer 211, so that the conductive core 213 may not move within the second inner protective layer 211.

The second inner protection layer 211 and the second filling layer 212 may be made of various materials, for example, the second inner protection layer 211 is a non-hygroscopic tape, and the second filling layer 212 is polypropylene.

In other embodiments, the electrical unit 21 may have other structures, for example, the second filling layer 212 is not disposed in the electrical unit 21, and the second protection layer directly covers the outer side of the conductive core 213.

Further, the conductive core 213 includes a reinforcing core 2131 and a plurality of leads 2132 twisted outside the reinforcing core 2131. The reinforcing core 2131 has a reinforcing effect, and can effectively improve the tensile strength of the whole conductive core 213. In other embodiments, the conductive core 213 can have other structures, for example, the conductive core 213 is formed by a plurality of wires 2132 twisted together.

The lead wire 2132 includes a conductor 2133 and an insulating layer 2134 covering the outside of the conductor 2133. The conductor 2133 may be made of copper, and the insulating layer 2134 may be made of halogen-free polyolefin having flame retardant properties. The material of the reinforcing core 2131 may be phosphated steel wire.

The electrical unit 21 forming process: annealed copper is used as a conductor 2133, a layer of halogen-free polyolefin material with flame retardant capability is extruded on the surface of the conductor 2133 and used as an insulating layer 2134, and the conductor 2133 and the insulating layer 2134 form a lead 2132; twisting a plurality of leads 2132 outside the reinforcing core 2131 in a direction to form a conductive core 213; a filling cord made of polypropylene is laid outside the plurality of conductive cores 213 as a second filling layer 212; finally, the 1-layer non-hygroscopic tape is wrapped and fastened as a wrapping tape (second inner protective layer 211) to constitute the electric unit 21.

Of course, in other embodiments, the electrical unit 21 may have other structures, for example, the second filling layer 212 is not disposed in the electrical unit 21, and the second inner protection layer 211 is directly coated on the outer side of the conductive core 213.

The filler strip 23 serves to ensure that two adjacent light units 22 in the outer protective layer 10 have a defined positional relationship. The filler strip 23 may be made of various materials, for example, the filler strip 23 is made of halogen-free polyolefin material with flame retardant capability. The filler strip 23 made of halogen-free polyolefin with flame retardant capability does not have embrittlement phenomenon even in the environment below 20 ℃ below zero, and simultaneously improves the overall flame retardant property of the composite cable. Furthermore, the filler strip 23 has a certain elastic deformability.

Alternatively, as shown in fig. 1 and 5, each of the filling strips 23 has a first arc surface 231 and a second arc surface 232 which are oppositely disposed, the first arc surface 231 is in contact fit with one light unit 22 of the two adjacent light units 22, and the second arc surface 232 is in contact fit with the other light unit 22 of the two adjacent light units 22. The filling strip 23 with the structure has surface contact with two adjacent light units 22, has good positioning effect, ensures that the two adjacent light units 22 have a determined position relation, and cannot generate dislocation. In other embodiments, the filler strip 23 may have other structures, for example, the surface of the filler strip 23 contacting with the two adjacent light units 22 is a plane.

Further, the filler rod 23 has a large end 233 and a small end 234 arranged oppositely in the radial direction of the electric unit 21, the small end 234 of the large end 233 is far away from the electric unit 21; both ends of the first arc surface 231 extend to the large end 233 and the small end 234, respectively, and both ends of the second arc surface 232 extend to the large end 233 and the small end 234, respectively.

The two ends of the first arc surface 231 extend to the large end 233 and the small end 234 of the filler strip 23 respectively, the two ends of the second arc surface 232 extend to the large end 233 and the small end 234 of the filler strip 23 respectively, and the small end 234 of the large end 233 of the filler strip 23 is far away from the electric unit 21, so that the filler strip 23 can be taken out easily after the outer protection layer 10 is torn from the first hand tearing notch 11. When the small end 234 of the filler rod 23 is separated from the adjacent two light units 22, the small end 234 of the filler rod 23 is deformed by a pressing force. Of course, during the process of removing the filler strip 23, the two adjacent light units 22 will also be subjected to a pressing force from the filler strip 23, under which the filler strip 23 can bring the two adjacent light units 22 slightly outwards, so that the light units 22 are more conveniently removed.

In the above structure, the two ends of the filler rod 23 in the radial direction of the electric unit 21 are larger than each other, and the smaller end 234 of the larger end 233 is far away from the electric unit 21. In other embodiments, the filler strip 23 may have other configurations. For example, the two ends of the filler strip 23 in the radial direction of the electrical unit 21 are a structure with one larger end and one smaller end, and the smaller end 234 is far away from the electrical unit 21 than the larger end 233; for another example, the two ends of the filler strip 23 in the radial direction of the electrical unit 21 are of an equilarge structure.

Further, with continued reference to fig. 1, the end face of the small end 234 of the filler rod 23 abuts against the outer surface wall of the electrical unit 21. The filler strip 23 may limit the relative movement of the electrical unit 21 and the light unit 22 such that the electrical unit 21 and the light unit 22 have a determined positional relationship.

In addition, a protrusion 2331 abutting against the inner surface wall of the outer protective layer 10 is provided on the end surface of the large end 233 of the filler rod 23. The filler strip 23 may limit the relative movement of the light unit 22 and the outer protective layer 10 such that the light unit 22 has a determined positional relationship with the outer protective layer 10.

The cross section of the protrusion 2331 is rectangular.

The filler rod 23 of the above-described structure may be formed by extrusion molding using a die.

In other embodiments, the filler strips 23 may be arranged in other ways. For example, as shown in fig. 6, the end surface of the small end 234 of the filler rod 23 abuts against the outer wall of the electric unit 21, and the end surface of the large end 233 of the filler rod 23 is not provided with the protrusion 2331 and is spaced from the inner surface wall of the outer protective layer 10; as shown in fig. 7, the end surface of the small end 234 of the filler rod 23 is spaced from the outer wall of the electric cell 21, and the end surface of the large end 233 of the filler rod 23 is provided with a protrusion 2331 abutting against the inner wall of the outer protective layer 10; as another example, as shown in fig. 8, the large end 233 of the filler strip 23 is not provided with the protrusion 2331, the large end 233 of the filler strip 23 is spaced from the inner surface wall of the outer protective layer 10, and the small end 234 of the filler strip 23 is spaced from the outer surface wall of the electrical unit 21.

In addition, the embodiment of the present application further provides a method for molding an optical-electrical composite cable 100, including the following steps:

a plurality of light units 22 are distributed at intervals on the outer side of the electric unit 21 at the central position in the circumferential direction, and a filling strip 23 is filled between every two adjacent light units 22;

arranging an outer protective layer 10 outside the core 20 consisting of the electrical units 21, all the light units 22 and all the filler strips 23;

first hand-tearing notches 11 are formed in the outer surface wall of the outer protective layer 10 at positions corresponding to the respective filling strips 23.

The photoelectric composite cable 100 formed by the forming method can conveniently take out the optical unit 22, and the taking-out process is time-saving and labor-saving.

Before the step of circumferentially and alternately distributing a plurality of light units 22 on the outer side of the electric unit 21 positioned at the central position and filling one filling strip 23 between every two adjacent light units 22, the paying-off tension of the light units 22 is controlled to be 1N-1.5N, the light units 22 are heated and dehumidified by a waste heat device, the paying-off tension of the filling strip 23 is controlled to be 10N-20N, and the paying-off tension of the electric unit 21 is controlled to be 500-.

The first hand-tearing notch 11 may be formed after the outer protective layer 10 is formed, or the first hand-tearing notch 11 may be formed at the same time as the outer protective layer 10 is formed, for example, the first hand-tearing notch 11 may be formed at the same time as the outer protective layer 10 is extrusion-molded outside the core 20 by an extruder.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An optical-electrical composite cable, comprising:

an outer protective layer; and

the outer protection layer covers the outer side of the core body;

2. The optical-electrical composite cable of claim 1, wherein each filler strip has a first circular arc surface and a second circular arc surface that are oppositely disposed, the first circular arc surface is in contact fit with one of the two adjacent optical units, and the second circular arc surface is in contact fit with the other of the two adjacent optical units.

3. The optical-electrical composite cable of claim 2, wherein the filler strip has a large end and a small end arranged oppositely in a radial direction of the electrical unit, the large end being farther from the electrical unit than the small end;

4. The optical-electrical composite cable according to claim 3, wherein an end surface of the small end abuts against an outer surface wall of the electrical unit.

5. The optical-electrical composite cable according to claim 3, wherein a protrusion abutting against an inner surface wall of the outer protective layer is provided on an end surface of the large end.

6. The optical-electrical composite cable of claim 1, wherein the first hand-tear notch is V-shaped.

7. The optical-electrical composite cable of claim 1, wherein the optical unit comprises a first inner protective layer, a first filler layer, and at least one optical fiber;

8. The optical-electrical composite cable according to claim 1, wherein the electrical unit comprises a second inner protective layer, a second filling layer and a conductive core, the conductive core is disposed in the second inner protective layer, and the second filling layer is filled between the second inner protective layer and the conductive core.

9. The optical-electrical composite cable of claim 8, wherein the conductive core comprises a strength core and a plurality of wires stranded outside the strength core.

10. A molding method of a photoelectric composite cable is characterized by comprising the following steps: