Torsion-resistant reinforced aluminum stranded wire electric welding machine cable

Abstract

The utility model discloses a torsion-resistant reinforced aluminum stranded wire electric welding machine cable which comprises a PTFE resin core tube body, and a plurality of aluminum wires are concentrically stranded around the outside of the PTFE resin core tube body to form an aluminum stranded wire conductor. A PTFE semi-directional tape wrapping layer, a foaming PFA extruded inner insulating layer, a PFA wrapped outer insulating layer, a butyronitrile polyvinyl chloride inner cushion layer, an AFRP reinforced woven anti-torsion plain woven net and a butyronitrile polyvinyl chloride sheath layer are sequentially wrapped outside the aluminum stranded wire conductor, and the winding direction of the PTFE semi-directional tape wrapping layer is opposite to the stranding direction of the aluminum stranded wire conductor. According to the cable, a steel core is replaced by the elastic resin core tube, steel core corrosion is avoided, the cable better adapts to various corrosion working conditions and environments, the structure of the aluminum stranded conductor is optimized, the mechanical strength and flexibility of the conductor are improved, the torsion resistance is enhanced, wire breakage is prevented, and the durability is better.

Description

Technical Field

[0001] The present application relates to the technical field of cables, and in particular to a torsion-resistant reinforced aluminum stranded wire welding machine cable. Background Art

[0002] As welding cables, electric welding machine cables are used in various wire feeders, gas shielded welding machines, argon arc welding machines, submerged arc welding machines and various auxiliary machines. Due to the complex working environment, the structure must be able to meet complex environmental factors. Electric welding machine cables are frequently moved, twisted and released during work. General power cables mostly use steel core aluminum stranded wire structures. The steel core is easily corroded, which is not conducive to adapting to the complexity of the working environment. In addition, the flexibility and torsion resistance of ordinary steel core aluminum stranded wire structures are poor, and they are prone to breakage and are not durable. Utility Model Content

[0003] The present application aims to solve the technical problem of providing a torsion-resistant reinforced aluminum stranded wire welding machine cable by replacing the steel core with an elastic resin core tube, thereby avoiding corrosion of the steel core, better adapting to various corrosive working conditions, optimizing the aluminum stranded wire conductor structure, and being beneficial to improving the mechanical strength and flexibility of the conductor, enhancing the torsion resistance, preventing wire breakage, and improving durability.

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

[0005] The torsion-resistant reinforced aluminum stranded wire welding machine cable comprises a PTFE resin core tube body, a plurality of aluminum wires are concentrically twisted around the outside of the PTFE resin core tube body to form an aluminum stranded wire conductor, the aluminum wire is composed of seven aluminum alloy monofilaments with a wire diameter of 0.05 mm to 0.08 mm, the twist direction of the aluminum alloy monofilaments is opposite to that of the aluminum stranded wire conductor, the outside of the aluminum stranded wire conductor is sequentially coated with a PTFE semi-directional tape wrapping layer, a foamed PFA extruded inner insulation layer, a PFA wrapping outer insulation layer, a nitrile polyvinyl chloride inner cushion layer, an AFRP reinforced woven torsion-resistant flat weave mesh and a nitrile polyvinyl chloride sheath layer, and the twist direction of the PTFE semi-directional tape wrapping layer is opposite to that of the aluminum stranded wire conductor.

[0006] Preferably, the PTFE resin core tube body comprises an inner cylindrical body and an outer cylindrical body, and a plurality of connecting plates are evenly distributed radially between the inner cylindrical body and the outer cylindrical body.

[0007] Preferably, the PFA wrapped outer insulation layer is a structure in which two layers of PFA resin tapes are spirally wrapped in opposite directions.

[0008] Preferably, the PTFE semi-directional tape wrapping layer is a multi-layer PTFE semi-directional tape overlapping wrapping structure, and the winding distance is one quarter to one half of the tape width.

[0009] Preferably, the PTFE semi-oriented tape has a thickness of 5 μm to 12 μm.

[0010] Preferably, the total thickness of the foamed PFA extruded inner insulation layer and the PFA wrapped outer insulation layer is 1 mm to 4 mm.

[0011] Preferably, the thickness ratio of the foamed PFA extruded inner insulation layer to the PFA wrapped outer insulation layer is 2:1 to 5:1.

[0012] Preferably, the outer surface of the nitrile polyvinyl chloride inner cushion layer and the inner surface of the nitrile polyvinyl chloride jacket layer are both provided with a thermoplastic EVA adhesive layer.

[0013] Beneficial effects of this application:

[0014] 1. By adding a PTFE resin core tube body to the aluminum stranded conductor instead of the original steel core structure, the problem of steel core corrosion is avoided, and it can better adapt to various corrosive working conditions. The PTFE resin core tube body has good flexibility and mechanical strength, and has high elasticity. The sliding friction reduction effect formed by the PTFE resin core tube body and the PTFE semi-directional tape wrapping layer helps to reduce the load applied to the aluminum stranded conductor, which is beneficial to reduce torque, prevent wire breakage, and improve durability.

[0015] 2. By optimizing the conductor structure of aluminum stranded wire, seven aluminum alloy monofilaments with a wire diameter of 0.05mm to 0.08mm are twisted to form aluminum wire, and then re-twisted, which helps to improve the flexibility and torsion resistance of the conductor, reduce the occurrence of wire breaks, ensure the stable electrical characteristics of the cable, increase safety and reliability, and ensure durable use.

[0016] 3. The nitrile polyvinyl chloride inner cushion layer and the sheath layer have high tensile strength, tear resistance, wear resistance, oil resistance and excellent weather resistance. Adding AFRP reinforced woven anti-torsion flat mesh between the nitrile polyvinyl chloride inner cushion layer and the sheath layer is beneficial to improve the anti-torsion performance, reduce torque, increase the mechanical strength of the sheath layer, adapt to long-term working conditions, not easy to fatigue and damage, and effectively protect the sheath layer with better durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment of the present application.

[0018] Description of reference numerals:

[0019] 1-PTFE resin core tube body, 2-aluminum stranded wire conductor, 3-aluminum wire, 4-aluminum alloy monofilament, 5-PTFE semi-directional tape wrapping layer, 6-foamed PFA extruded inner insulation layer, 7-PFA wrapped outer insulation layer, 8-nitrile polyvinyl chloride inner cushion layer, 9-AFRP reinforced braided anti-twist flat weave mesh, 10-nitrile polyvinyl chloride sheath layer. DETAILED DESCRIPTION

[0020] The terms used in the implementation method part of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The implementation method of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0021] See also Figure 1 The torsion-resistant reinforced aluminum stranded wire welding machine cable of the embodiment of the present application comprises a PTFE resin core tube body 1. Specifically, the PTFE resin core tube body 1 comprises an inner cylinder and an outer cylinder, and a plurality of connecting plates are evenly distributed radially between the inner cylinder and the outer cylinder. A plurality of aluminum wires are coaxially twisted around the outside of the PTFE resin core tube body 1 to form an aluminum stranded wire conductor 2. The aluminum wire 3 is composed of seven aluminum alloy monofilaments 4 with a wire diameter of 0.05 mm to 0.08 mm, and the twist direction of the aluminum alloy monofilament 4 is opposite to that of the aluminum stranded wire conductor 2.

[0022] The aluminum stranded conductor 2 is coated with a PTFE semi-directional tape wrapping layer 5, a foamed PFA extruded inner insulation layer 6, a PFA wrapped outer insulation layer 7, a nitrile polyvinyl chloride inner cushion layer 8, an AFRP reinforced braided anti-twist flat mesh 9 and a nitrile polyvinyl chloride sheath layer 10 in sequence. The winding direction of the PTFE semi-directional tape wrapping layer 5 is opposite to the twisting direction of the aluminum stranded conductor 2. In one embodiment, the PTFE semi-directional tape wrapping layer 5 is a multi-layer PTFE semi-directional tape overlapping wrapping structure and the winding pitch is one-quarter to one-half of the bandwidth. Further, the thickness of the PTFE semi-directional tape is 5μm to 12μm. The total thickness of the foamed PFA extruded inner insulation layer 6 and the PFA wrapped outer insulation layer 7 is 1mm to 4mm. The thickness ratio of the foamed PFA extruded inner insulation layer 6 and the PFA wrapped outer insulation layer 7 is 2:1 to 5:1. In one embodiment, the PFA wrapped outer insulation layer 7 is a structure in which two layers of PFA resin tapes are mutually reverse spirally wrapped. The outer surface of the nitrile polyvinyl chloride inner cushion layer 8 and the inner surface of the nitrile polyvinyl chloride jacket layer 10 are both provided with a thermoplastic EVA adhesive layer.

[0023] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that any technician familiar with this technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed in the present application, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered by the protection scope of the present application.

Claims

1. Torsion-resistant reinforced aluminum stranded wire welding cable, characterized by: The invention comprises a PTFE resin core tube body (1), a plurality of aluminum wires (3) are coaxially twisted around the outside of the PTFE resin core tube body (1) to form an aluminum stranded wire conductor (2), the aluminum wire (3) is formed by twisting seven aluminum alloy monofilaments (4) with a wire diameter of 0.05 mm to 0.08 mm, the twist direction of the aluminum alloy monofilaments (4) is opposite to that of the aluminum stranded wire conductor (2), the aluminum stranded wire conductor (2) is coated with a PTFE semi-directional tape wrapping layer (5), a foamed PFA extruded inner insulation layer (6), a PFA wrapping outer insulation layer (7), a nitrile polyvinyl chloride inner cushion layer (8), an AFRP reinforced braided anti-twist flat woven mesh (9) and a nitrile polyvinyl chloride sheath layer (10) in sequence, and the twist direction of the PTFE semi-directional tape wrapping layer (5) is opposite to that of the aluminum stranded wire conductor (2).

2. The torsion-resistant reinforced aluminum stranded wire welding cable according to claim 1 is characterized in that: The PTFE resin core tube body (1) comprises an inner cylindrical body and an outer cylindrical body, and a plurality of connecting plates are evenly distributed in a radial pattern between the inner cylindrical body and the outer cylindrical body.

3. The torsion-resistant reinforced aluminum stranded wire welding cable according to claim 1 is characterized in that: The PFA wrapped outer insulating layer (7) is a structure in which two layers of PFA resin tapes are spirally wrapped in opposite directions.

4. The torsion-resistant reinforced aluminum stranded wire welding cable according to claim 1 is characterized in that: The PTFE semi-directional tape wrapping layer (5) is a multi-layer PTFE semi-directional tape overlapping wrapping structure, and the winding distance is one quarter to one half of the tape width.

5. The torsion-resistant reinforced aluminum stranded wire welding cable according to claim 4 is characterized in that: The thickness of the PTFE semi-oriented tape is 5 μm to 12 μm.

6. The torsion-resistant reinforced aluminum stranded wire welding cable according to claim 1 is characterized in that: The total thickness of the foamed PFA extruded inner insulation layer (6) and the PFA wrapped outer insulation layer (7) is 1 mm to 4 mm.

7. The torsion-resistant reinforced aluminum stranded wire welding cable according to claim 1 is characterized in that: The thickness ratio of the foamed PFA extruded inner insulation layer (6) and the PFA wrapped outer insulation layer (7) is 2:1 to 5:

1.

8. The torsion-resistant reinforced aluminum stranded wire welding cable according to claim 1 is characterized in that: The outer surface of the nitrile polyvinyl chloride inner cushion layer (8) and the inner surface of the nitrile polyvinyl chloride jacket layer (10) are both provided with a thermoplastic EVA adhesive layer.

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