Simple wire stripping type field bus cable

Abstract

The utility model discloses a simple wire stripping type field bus cable, which comprises a cable core formed by twisting four insulating wire cores around a para-position type wholly aromatic copolyamide stretched fiber core material, and an ETFE (Ethylene Tetra Fluoro Ethylene) resin wrapping layer, a copper foil shielding layer and an irradiation crosslinking linear low-density polyethylene sheath are sequentially coated outside the cable core, the outer surface of the copper foil shielding layer is electroplated to form a copper-zinc alloy electroplated layer, a tearing rope and a drain wire are arranged between the ETFE resin wrapping layer and the copper foil shielding layer, and an axial wire stripping groove matched with the tearing rope is formed in the outer surface of the irradiation crosslinking linear low-density polyethylene sheath in the axial direction. According to the field bus cable, the structure is improved, so that manual wire stripping operation can be carried out simply and easily, the quality of a manual wire stripping process is ensured, and meanwhile, the difficulty of wire stripping operation is reduced, and the labor intensity is reduced.

Description

Technical Field

[0001] The present application relates to the field of cable technology, and in particular to a simple stripping type fieldbus cable. Background Art

[0002] The fieldbus used in the field of intelligent buildings has the characteristics of distribution, openness and flexibility. It can replace the traditional separated control cables and power cables with a multi-core cable, and can be laid in a linear, tree or star shape, which is conducive to expansion and modification. Manual stripping operations are required during on-site installation and maintenance. The sheath needs to be stripped and pulled apart with a tear cord. Since the sheath has a certain thickness and strength, manual pulling operations are not proficient enough, which can easily cause unexpected damage to the sheath and internal wire cores, making the operation difficult and labor-intensive for operators. Utility Model Content

[0003] The present application aims to solve the technical problem of providing a simple wire stripping type fieldbus cable by improving the structure to facilitate simple and easy manual wire stripping operations, thereby ensuring the quality of the manual wire stripping process and alleviating the difficulty of the wire stripping operation and reducing labor intensity.

[0004] This application solves the above technical problems through the following technical solutions.

[0005] A simple stripping fieldbus cable comprises four insulating wire cores twisted together around a para-type fully aromatic copolyamide stretched fiber core material to form a cable core, the outer surface of the cable core is sequentially coated with an ETFE resin sheath, a copper foil shielding layer and an irradiation cross-linked linear low-density polyethylene sheath, the outer surface of the copper foil shielding layer is electroplated to form a copper-zinc alloy electroplating layer, a tear rope and a drain wire are arranged between the ETFE resin sheath and the copper foil shielding layer, and an axial stripping groove is provided on the outer surface of the irradiation cross-linked linear low-density polyethylene sheath along the axial direction to cooperate with the tear rope.

[0006] Preferably, a reinforcing filling strip is embedded in the axial wire stripping groove.

[0007] Preferably, the axial wire stripping groove has a depth of 0.2 mm to 0.8 mm.

[0008] Preferably, the insulated core comprises an inner conductor and an XLPE insulation layer.

[0009] Preferably, the inner conductor is composed of a plurality of tinned copper wires with a wire diameter of 0.01 mm to 0.04 mm twisted together concentrically.

[0010] Preferably, the XLPE insulation layer has a thickness of 0.1 mm to 0.3 mm.

[0011] Preferably, the inner conductor has a diameter of 0.75 mm to 0.85 mm.

[0012] Preferably, the copper foil shielding layer has a thickness of 20 μm to 100 μm, and the copper-zinc alloy electroplating layer does not exceed 2 μm.

[0013] Preferably, the ETFE resin wrapping layer is a multi-layer overlapping wrapping structure of ETFE resin tapes with a thickness not exceeding 0.1 mm.

[0014] Preferably, the radiation cross-linked linear low-density polyethylene sheath has a thickness of not less than 1 mm.

[0015] Beneficial effects of this application:

[0016] 1. By opening an axial stripping groove on the outer surface of the irradiated cross-linked linear low-density polyethylene sheath, the sheath can be easily pulled open by tearing the rope corresponding to the axial stripping groove during manual stripping operations, and no unexpected damage will be caused to the sheath, the internal core conductor and the insulation layer, which greatly reduces the difficulty of the manual stripping process, is conducive to improving the work efficiency and work quality, and reduces the intensity of manual stripping operations. In addition, a copper-zinc alloy electroplating layer is formed on the outer surface of the copper foil shielding layer, which helps to prevent discoloration and other deterioration caused by oxidation of the copper foil during the stripping operation, ensure the stable and reliable electrical characteristics of the cable, and improve durability.

[0017] 2. Four insulating cores and the para-type fully aromatic copolyamide stretched fiber core material are twisted together to form a cable core, which makes the cable core structure balanced. The para-type fully aromatic copolyamide stretched fiber core material has a large tensile elastic modulus, which helps to reduce the local stress concentration of the insulating core. The sliding property of the ETFE resin sheath improves the friction reduction effect, helps to reduce the load applied to the four insulating cores, improves the bending and tensile resistance, and has better durability.

[0018] 3. A reinforcing filler strip is embedded in the axial stripping groove of the sheath. For example, a reinforcing filler strip made of the same material as the sheath can maintain the integrity of the sheath structure, strengthen the mechanical strength of the sheath, and prevent unexpected damage at the axial stripping groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following drawings are intended to facilitate the description of preferred embodiments and are not intended to limit the scope of protection of the present application.

[0020] Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment of the present application.

[0021] In the figure: 1-insulated wire core, 2-para-type wholly aromatic copolyamide stretched fiber core material, 3-ETFE resin winding layer, 4-copper foil shielding layer, 5-irradiated cross-linked linear low-density polyethylene sheath, 6-tear rope, 7-drain wire, 8-axial stripping groove, 9-reinforcement filling strip, 10-inner conductor, 11-XLPE insulation layer. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] like Figure 1 As shown, the simple stripping fieldbus cable of the embodiment of the present application includes four insulating cores 1 twisted together around the para-type fully aromatic copolyamide stretched fiber core material 2 to form a cable core. In this embodiment, the insulating core 1 includes an inner conductor 10 and an XLPE insulation layer 11. Specifically, the inner conductor 10 is composed of a plurality of tinned copper wires with a wire diameter of 0.01 mm to 0.04 mm coaxially twisted. The diameter of the inner conductor 10 is 0.75 mm to 0.85 mm. The thickness of the XLPE insulation layer 11 is 0.1 mm to 0.3 mm.

[0024] The cable core is coated with an ETFE resin wrapping layer 3, a copper foil shielding layer 4 and an irradiated cross-linked linear low-density polyethylene sheath 5 in sequence. The outer surface of the copper foil shielding layer 4 is electroplated with a copper-zinc alloy electroplating layer. Further, the copper foil shielding layer 4 has a thickness of 20 μm to 100 μm, and the copper-zinc alloy electroplating layer does not exceed 2 μm. A tear rope 6 and a drain wire 7 are provided between the ETFE resin wrapping layer 3 and the copper foil shielding layer 4. An axial stripping groove 8 is provided on the outer surface of the irradiated cross-linked linear low-density polyethylene sheath 5 in the axial direction to cooperate with the tear rope 6. The depth of the axial stripping groove 8 is 0.2 mm to 0.8 mm. Further, a reinforcing filling strip 9 is embedded in the axial stripping groove 8. The thickness of the irradiated cross-linked linear low-density polyethylene sheath 5 is not less than 1 mm. In one embodiment, the ETFE resin wrapping layer 3 is a multi-layer overlapping wrapping structure of ETFE resin tape and the thickness does not exceed 0.1 mm.

[0025] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. Simple stripping type fieldbus cable, its characteristics are: The invention comprises four insulating wire cores (1) twisted together around a para-type fully aromatic copolyamide stretched fiber core material (2) to form a cable core, wherein the cable core is coated with an ETFE resin sheath (3), a copper foil shielding layer (4) and an irradiated cross-linked linear low-density polyethylene sheath (5) in sequence, wherein the outer surface of the copper foil shielding layer (4) is electroplated with a copper-zinc alloy electroplating layer, a tear rope (6) and a drain wire (7) are provided between the ETFE resin sheath (3) and the copper foil shielding layer (4), and an axial stripping groove (8) is provided on the outer surface of the irradiated cross-linked linear low-density polyethylene sheath (5) in the axial direction to cooperate with the tear rope (6).

2. The simple stripping type fieldbus cable according to claim 1, characterized in that: A reinforcing filling strip (9) is embedded in the axial wire stripping groove (8).

3. The simple stripping type fieldbus cable according to claim 1, characterized in that: The depth of the axial wire stripping groove (8) is 0.2 mm to 0.8 mm.

4. The simple stripping type fieldbus cable according to claim 1, characterized in that: The insulated wire core (1) comprises an inner conductor (10) and an XLPE insulation layer (11).

5. The simple stripping type fieldbus cable according to claim 4, characterized in that: The inner conductor (10) is composed of a plurality of tinned copper wires with a wire diameter of 0.01 mm to 0.04 mm, which are coaxially twisted.

6. The simple stripping type fieldbus cable according to claim 4, characterized in that: The XLPE insulation layer (11) has a thickness of 0.1 mm to 0.3 mm.

7. The simple stripping type fieldbus cable according to claim 4, characterized in that: The inner conductor (10) has a diameter of 0.75 mm to 0.85 mm.

8. The simple stripping type fieldbus cable according to claim 1, characterized in that: The copper foil shielding layer (4) has a thickness of 20 μm to 100 μm, and the copper-zinc alloy electroplating layer does not exceed 2 μm.

9. The simple stripping type fieldbus cable according to claim 1, characterized in that: The ETFE resin wrapping layer (3) is a multi-layer overlapping wrapping structure of ETFE resin tapes and has a thickness not exceeding 0.1 mm.

10. The simple stripping type fieldbus cable according to claim 1, characterized in that: The thickness of the radiation cross-linked linear low-density polyethylene sheath (5) is not less than 1 mm.

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