High-speed pultrusion optical cable reinforcing core and production process

Abstract

The invention discloses a high-speed pultrusion optical cable reinforcing core and a production process thereof, and the core comprises an outer sheath, the outer surface of the outer sheath is provided with a directional diameter, the interior of the outer sheath is fixedly connected with an aluminum-plastic composite layer, the outer surface of the aluminum-plastic composite layer is provided with a ring groove, the interior of the aluminum-plastic composite layer is provided with a vertical groove, and the vertical groove is provided with an annular groove. A wrapping layer and a cable core filling layer are fixedly connected in the aluminum-plastic composite layer, an embedding groove is formed in the cable core filling layer, a center reinforcing rib is fixedly connected in the embedding groove, the center reinforcing rib is provided with three sets of supporting plates, and deformation grooves are formed in the outer surfaces of the three sets of supporting plates. According to the utility model, through the arrangement of the central reinforcing rib and the deformation grooves formed in the supporting plates connected with the central reinforcing rib, the optical cable has the bending characteristic while the passing strength of the optical cable is improved.

Description

Technical Field

[0001] This invention relates to the field of optical cable reinforcing core technology, and in particular to a high-speed pultruded optical cable reinforcing core and its manufacturing process. Background Technology

[0002] With the rapid development of society, people are increasingly reliant on communication networks and information transmission. Communication networks are evolving towards higher capacity and density; any damage would immediately result in severe economic losses and inconvenience to our lives. Therefore, measures should be taken to protect and improve optical cables to ensure the long-term smooth operation and reliability of communication networks. To accelerate the development of information technology, it is necessary to strengthen the laying of fiber optic cable networks and promote the construction and development of fiber-to-the-home (FTTH).

[0003] Optical cables consist of optical fibers, a central reinforcing rib, and inner and outer sheaths. For optical cables laid indoors and outdoors, the following characteristics are required: excellent flexibility, strong tensile strength, and torsional resistance. Currently used optical fibers are primarily composed of high-purity quartz glass, which is physically fragile in terms of tensile and bending resistance. During installation, it is prone to breakage due to bending and knotting, resulting in the complete loss of the reinforcing core's basic function. Therefore, it is necessary to provide a high-speed pultruded optical cable reinforcing core and its manufacturing process to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a high-speed pultruded optical cable reinforcing core. The aluminum-plastic composite layer is designed with annular grooves on its outer surface to better bond with the outer sheath layer, thereby strengthening the overall strength of the optical cable. The vertical grooves inside the aluminum-plastic composite layer are designed to bond with the inner wrapping layer, making the overall structure more robust. The central reinforcing rib and the deformation grooves on the support plate connected to the central reinforcing rib enhance the strength of the optical cable and also make the optical cable flexible.

[0005] The present invention also provides a high-speed pultruded optical cable reinforcing core as described above, comprising: an outer sheath, the outer surface of which is provided with a directional diameter; an aluminum-plastic composite layer fixedly connected inside the outer sheath; an annular groove provided on the outer surface of the aluminum-plastic composite layer; a vertical groove provided inside the aluminum-plastic composite layer; a wrapping layer fixedly connected inside the aluminum-plastic composite layer; a cable core filling layer; an embedding groove provided inside the cable core filling layer; a central reinforcing rib fixedly connected inside the embedding groove; three sets of support plates provided on the central reinforcing rib; deformation grooves provided on the outer surface of each of the three sets of support plates; arc grooves provided on the outer surface of the cable core filling layer; three sets of arc grooves provided; an inner sheath fixedly connected inside each of the three sets of arc grooves; and an optical fiber fixedly connected inside the inner sheath.

[0006] According to the present invention, the reinforcing core of a high-speed pultruded optical cable has three directional diameters, which correspond in opposite directions to the three sets of support plates on the central reinforcing rib. This facilitates the determination of the orientation of the internal support plates and the bending of the optical cable.

[0007] According to the present invention, the outer surface of the inner sheath of the reinforcing core of a high-speed pultruded optical cable is fixedly connected to the wrapping layer, and the outer surface of the core filling layer is fixedly connected to the wrapping layer. The wrapping layer integrates the internal components of the optical cable into a single unit, making it more robust.

[0008] According to the present invention, the material used for the wrapping layer of the reinforcing core of a high-speed pultruded optical cable is non-woven fabric, and the outer surface of the wrapping layer is embedded in the interior of the vertical groove. The vertical groove allows the wrapping layer to be embedded, thereby enhancing the cable's torsional resistance.

[0009] According to the present invention, the outer sheath of the reinforcing core of a high-speed pultruded optical cable is made of insulating rubber, and the inner surface of the outer sheath is embedded in the annular groove. Embedding in the annular groove enhances the tensile strength of the optical cable.

[0010] The reinforcing core of the high-speed pultruded optical cable provided by the present invention uses polyethylene as the material for the core filling layer and insulating rubber as the material for the inner sheath. This gives it good insulation properties and good flexibility.

[0011] According to the present invention, the aluminum-plastic composite layer of the reinforcing core of a high-speed pultruded optical cable uses non-metallic polyethylene plastic, and the central reinforcing rib uses aluminum alloy. This improves the overall strength of the optical cable and provides good support for its internal structure.

[0012] A manufacturing process for a high-speed pultruded optical cable reinforcing core according to the present invention includes the following steps:

[0013] S1: The cable core filling layer is made by performing drying, twisting, impregnation, coating and curing and winding processes through the production equipment, so that the central reinforcing rib is covered inside.

[0014] S2: The optical fiber is wrapped in the inner sheath, and the three sets of inner sheaths are respectively embedded in the slots of the cable core filling layer;

[0015] S3: The inner sheath and the cable core filling layer are wrapped with a wrapping layer;

[0016] S4: An aluminum-plastic composite layer is attached to the outside of the wrapping layer. Vertical grooves are opened on the contact surface between the aluminum-plastic composite layer and the wrapping layer. During the wrapping process, the outer layer of the wrapping layer is embedded into the interior of the vertical grooves by extrusion.

[0017] S5: An outer sheath is installed over the aluminum-plastic composite layer. An annular groove is provided on the contact surface between the outer aluminum-plastic composite layer and the outer sheath. During installation, the inner surface of the outer sheath is embedded into the annular groove by compression.

[0018] S6: Three directional radial lines are opened on the outer surface of the outer sheath, and the vertical positions of the three directional radial lines correspond to the direction of extension of the support plate on the central reinforcing rib.

[0019] Beneficial effects

[0020] 1. Compared with the prior art, the high-speed pultruded optical cable reinforcing core and manufacturing process of the present invention, through the setting of the aluminum-plastic composite layer, utilizes the annular groove designed on its outer surface to better bond with the outer sheath layer, thereby strengthening the overall strength of the optical cable, and through the vertical groove set inside the aluminum-plastic composite layer, it achieves mutual bonding with the inner wrapping layer, making its overall structure more robust.

[0021] 2. Compared with the prior art, the high-speed pultruded optical cable reinforcing core and manufacturing process of the present invention, through the setting of the central reinforcing rib and the deformation groove set on the support plate connected to the central reinforcing rib, not only enhances the strength of the optical cable, but also makes the optical cable flexible. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is an overall structural diagram of a high-speed pultruded optical cable reinforcing core according to the present invention;

[0024] Figure 2 This is a schematic diagram of the aluminum-plastic composite layer structure of the reinforcing core of a high-speed pultruded optical cable according to the present invention;

[0025] Figure 3 This is a schematic diagram of the inner sheath structure of the reinforcing core of a high-speed pultruded optical cable according to the present invention;

[0026] Figure 4 This is a schematic diagram of the central reinforcing rib of the reinforcing core of a high-speed pultruded optical cable according to the present invention;

[0027] Figure 5 This is a schematic diagram of a high-speed pultruded optical cable reinforcing core cladding layer according to the present invention;

[0028] Figure 6 This is a schematic diagram of the core filling layer of a high-speed pultruded optical cable reinforcing core according to the present invention.

[0029] Legend:

[0030] 1. Outer sheath; 2. Directional diameter; 3. Aluminum-plastic composite layer; 4. Circular groove; 5. Vertical groove; 6. Wrapping layer; 7. Cable core filling layer; 8. Inner sheath; 9. Optical fiber; 10. Central reinforcing rib; 11. Deformation groove; 12. Embedded groove. Detailed Implementation

[0031] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0032] Reference Figure 1-6 This invention discloses a high-speed pultruded optical cable reinforcing core, comprising: an outer sheath 1, the outermost layer of the optical cable, serving a protective function; a directional diameter 2 on the outer surface of the outer sheath 1 for identifying the orientation of the support plate on the central reinforcing rib 10 inside; an aluminum-plastic composite layer 3 fixedly connected inside the outer sheath 1 for protecting and improving the stability of the connection between the inner and outer layers of the optical cable; an annular groove 4 on the outer surface of the aluminum-plastic composite layer 3 for enhancing the tensile strength of the optical cable; a vertical groove 5 inside the aluminum-plastic composite layer 3 for enhancing the torsional strength of the optical cable; and a wrapping layer 6 fixedly connected inside the aluminum-plastic composite layer 3 for... The internal structure of the optical cable forms a whole. The core filling layer 7 is used to divide the positions between the three sets of inner sheaths. The core filling layer 7 has an embedding groove 12 for embedding the central reinforcing rib 10. The central reinforcing rib 10 is fixedly connected inside the embedding groove 12 to protect the optical fiber 9 in the temporal part from breakage. The central reinforcing rib 10 has three sets of support plates, and the outer surface of each of the three sets of support plates has a deformation groove 11. The outer surface of the core filling layer 7 has three sets of arc grooves, and the inner sheath 8 is fixedly connected inside each of the three sets of arc grooves. The optical fiber 9 is fixedly connected inside the inner sheath 8. There are three directional diameters 2, which correspond to the opposite direction of the three sets of support plates on the central reinforcing rib 10. The outer surface of the inner sheath 8 is fixedly connected to the wrapping layer 6, and the outer surface of the core filling layer 7 is fixedly connected to the wrapping layer 6.

[0033] The material used for the wrapping layer 6 is non-woven fabric, and the outer surface of the wrapping layer 6 is embedded inside the vertical groove 5. The material used for the outer sheath 1 is insulating rubber, and the inner surface of the outer sheath 1 is embedded inside the annular groove 4. The material used for the cable core filling layer 7 is polyethylene, and the material used for the inner sheath 8 is insulating rubber. The material used for the aluminum-plastic composite layer 3 is non-metallic polyethylene plastic, and the material used for the central reinforcing rib 10 is aluminum alloy.

[0034] This invention also provides a manufacturing process for a high-speed pultruded optical cable reinforcing core, which includes the following steps:

[0035] S1: The cable core filling layer 7 is made by performing drying, twisting, impregnation, coating and curing and winding processes through the production equipment, so that the central reinforcing rib 10 covers its interior;

[0036] S2: The optical fiber 9 is wrapped in the inner sheath 8, and the three sets of inner sheaths 8 are respectively embedded into the slots of the cable core filling layer 7.

[0037] S3: The inner sheath 8 and the cable core filling layer 7 are wrapped with a wrapping layer 6;

[0038] S4: An aluminum-plastic composite layer 3 is attached to the outside of the wrapping layer 6. The contact surface between the aluminum-plastic composite layer 3 and the wrapping layer 6 is provided with a vertical groove 5. During the wrapping process, the outer layer of the wrapping layer 6 is embedded into the interior of the vertical groove 5 by extrusion.

[0039] S5: An outer sheath 1 is installed on the aluminum-plastic composite layer 3. An annular groove 4 is provided on the contact surface between the outer aluminum-plastic composite layer 3 and the outer sheath 1. When installing, the inner surface layer of the outer sheath 1 is embedded into the annular groove 4 by compression.

[0040] S6: Three directional diameters 2 are opened on the outer surface of the outer sheath 1, and the vertical positions of the three directional diameters 2 correspond to the direction of extension of the support plate on the central reinforcing rib 10.

[0041] Working principle: The inner sheath 8 layers are attached to the outer layer of the optical fiber 9 to fix the multiple optical fibers 9. The three sets of inner sheaths 8 are respectively embedded in the grooves on the core filling layer 7. The central reinforcing rib 10 is embedded inside the core filling layer 7. The core filling layer 7 and the inner sheath 8 are fixed by the wrapping layer 6. The aluminum-plastic composite layer 3 is attached to the outer surface of the wrapping layer 6 and the wrapping layer 6 is squeezed into the vertical groove 5. The outer sheath 1 is attached to the outer surface of the aluminum-plastic composite layer 3 and the inner surface of the outer sheath 1 is squeezed into the annular groove 4 on the aluminum-plastic composite layer 3. Three directional diameters 2 are opened on the outer surface of the outer sheath 1 and are opposite to the support plate on the central reinforcing rib 10.

[0042] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A high-speed pultruded optical cable reinforcing core, characterized in that, include: Outer sheath (1), the outer surface of the outer sheath (1) is provided with a directional diameter (2), the inner part of the outer sheath (1) is fixedly connected with an aluminum-plastic composite layer (3), the outer surface of the aluminum-plastic composite layer (3) is provided with an annular groove (4), the inner part of the aluminum-plastic composite layer (3) is provided with a vertical groove (5), and the inner part of the aluminum-plastic composite layer (3) is fixedly connected with a wrapping layer (6); The cable core filling layer (7) has an embedded groove (12) inside. A central reinforcing rib (10) is fixedly connected inside the embedded groove (12). The central reinforcing rib (10) is provided with three sets of support plates. The outer surface of each of the three sets of support plates is provided with a deformation groove (11). The outer surface of the cable core filling layer (7) is provided with an arc groove. There are three sets of arc grooves. An inner sheath (8) is fixedly connected inside each of the three sets of arc grooves. An optical fiber (9) is fixedly connected inside the inner sheath (8).

2. The high-speed pultruded optical cable reinforcing core according to claim 1, characterized in that, The directional diameter (2) is provided in three directions, and the three directional diameters (2) correspond to the opposite directions of the three sets of support plates on the central reinforcing rib (10).

3. The high-speed pultruded optical cable reinforcing core according to claim 1, characterized in that, The outer surface of the inner sheath (8) is fixedly connected to the wrapping layer (6), and the outer surface of the cable core filling layer (7) is fixedly connected to the wrapping layer (6).

4. The high-speed pultruded optical cable reinforcing core according to claim 1, characterized in that, The material used for the wrapping layer (6) is non-woven fabric, and the outer surface of the wrapping layer (6) is embedded in the interior of the vertical groove (5).

5. The high-speed pultruded optical cable reinforcing core according to claim 1, characterized in that, The outer sheath (1) is made of insulating rubber, and the inner surface of the outer sheath (1) is embedded in the interior of the annular groove (4).

6. The high-speed pultruded optical cable reinforcing core according to claim 1, characterized in that, The material used for the cable core filling layer (7) is polyethylene, and the material used for the inner sheath (8) is insulating rubber.

7. The high-speed pultruded optical cable reinforcing core according to claim 1, characterized in that, The aluminum-plastic composite layer (3) is made of non-metallic polyethylene plastic, and the central reinforcing rib (10) is made of aluminum alloy.

8. A manufacturing process for a high-speed pultruded optical cable reinforcing core, comprising the following steps: S1: The cable core filling layer (7) is made by the drying process, twisting process, impregnation process, coating and curing process and winding process of the production equipment so that the central reinforcing rib (10) covers its interior; S2: The optical fiber (9) is wrapped in the inner sheath (8), and the three sets of inner sheaths are respectively embedded in the groove of the cable core filling layer (7); S3: The inner sheath (8) and the core filling layer (7) are wrapped with a wrapping layer (6) for the winding process; S4: An aluminum-plastic composite layer (3) is attached to the outside of the wrapping layer (6). A vertical groove (5) is provided on the contact surface between the aluminum-plastic composite layer (3) and the wrapping layer (6). When wrapping, the outer layer of the wrapping layer (6) is embedded into the interior of the vertical groove (5) by extrusion. S5: An outer sheath (1) is installed on the aluminum-plastic composite layer (3). An annular groove (4) is provided on the contact surface between the outer aluminum-plastic composite layer (3) and the outer sheath (1). When the outer sheath is installed, the inner surface layer of the outer sheath (1) is embedded into the interior of the annular groove (4) by compression. S6: Three directional diameters (2) are opened on the outer surface of the outer sheath (1), and the vertical position of the three directional diameters (2) corresponds to the direction of extension of the support plate on the central reinforcing rib (10).

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