Anti-deformation slow pressure type welding gun cable

Abstract

The utility model discloses an anti-deformation slow pressure type welding gun cable, which comprises an electroplated spring tube, a double-core integrated control wire core and a plurality of oxygen-free copper strands which are twisted around the outside of the electroplated spring tube to form a cable core, and the outside of the cable core is sequentially coated with a cross-linked fluororubber longitudinal hole insulator, an AFRP reinforced wrapping layer and a chloroprene rubber outer sheath. A plurality of longitudinal holes are uniformly distributed in the circumferential direction of the cross-linked fluororubber longitudinal hole insulator, the longitudinal holes are filled with para-position type wholly aromatic copolyamide stretched fiber core materials, and the outer diameter of the chloroprene rubber outer sheath is 18-25 mm. The welding gun cable core is round and balanced in structure, high in mechanical strength, better in bending resistance, capable of relieving lateral pressure, beneficial to preventing wire and core breakage and enhancing safety and reliability, and better in durability and applicability.

Description

Technical Field

[0001] The present application relates to the technical field of cables, and in particular to an anti-deformation and pressure-relieving welding gun 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. The welding cable used in the push-wire automatic protection welding gun has the composite functions of ventilation, power supply, and control of the welding wire. The finished cable needs to withstand AC 50Hz voltage 1000V and 5min non-breakdown performance. The electroplated spring tube of the ordinary welding cable has poor lateral bending resistance and is prone to deformation under the condition of cable bending. Moreover, the two control wire cores are twisted into a cable with copper wire. The spacing between the control wire core conductors is not easy to control, and the spacing between the cores changes. The control wire core conductor is prone to deformation and wire breakage. Under the action of lateral pressure, the copper wire is easily broken due to local stress concentration. The electrical characteristics are unstable and the durability is poor. Utility Model Content

[0003] The present application aims to solve the technical problem of providing a deformation-resistant and pressure-relieving welding gun cable in view of the deficiencies in the prior art, which has a round and balanced cable core structure, high mechanical strength, better bending resistance, and can reduce lateral pressure, thereby helping to prevent wire and core breakage, enhancing safety and reliability, and having better durability and applicability.

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

[0005] The anti-deformation slow-pressure welding gun cable comprises an electroplated spring tube, a double-core integrated control core and a plurality of oxygen-free copper strands twisted around the outside of the electroplated spring tube to form a cable core, the double-core integrated control core comprises two control core conductors arranged side by side and coated together in a PFA insulating coating, the PFA insulating coating forms a connecting rib on the interval between the two control core conductors, the oxygen-free copper strands are composed of a plurality of oxygen-free copper strands twisted together, the oxygen-free copper strands are composed of a plurality of oxygen-free copper monofilaments twisted together concentrically, the outside of the cable core is sequentially coated with a cross-linked fluororubber longitudinal hole insulator, an AFRP reinforced winding layer and a chloroprene rubber outer sheath, the cross-linked fluororubber longitudinal hole insulator is circumferentially evenly provided with a plurality of longitudinal holes, the longitudinal holes are filled with para-type fully aromatic copolyamide stretched fiber core material, and the outer diameter of the chloroprene rubber outer sheath is 18 mm to 25 mm.

[0006] Preferably, the outer diameter of the electroplated spring tube is 8.5 mm.

[0007] Preferably, the diameter of the oxygen-free copper stranded wire is 0.16 mm to 0.2 mm, and the diameter of the oxygen-free copper monofilament wire is 0.04 mm to 0.08 mm.

[0008] Preferably, the oxygen-free copper strands have the same lay directions, and the oxygen-free copper strands have different lay lengths.

[0009] Preferably, the twist direction of the oxygen-free copper stranded wire is opposite to that of the oxygen-free copper monofilament.

[0010] Preferably, the control line core conductor is composed of a plurality of tinned copper monofilaments with a wire diameter of 0.02 mm to 0.04 mm.

[0011] Preferably, the outer diameter of the chloroprene rubber outer sheath is 18.5 mm, 19 mm, 19.5 mm, 20 mm, 21 mm, 22 mm, 23 mm or 24.5 mm.

[0012] Preferably, the AFRP reinforcement wrapping layer is a structure in which inner and outer double layers of aramid strands are spirally wrapped in opposite directions with different winding pitches, and the thickness of the AFRP reinforcement wrapping layer is 0.2 mm to 0.5 mm.

[0013] Preferably, the outer surface of the cross-linked fluororubber vertical hole insulator and the inner surface of the chloroprene rubber outer sheath are both provided with a thermoplastic EVA adhesive layer, and the thickness of the thermoplastic EVA adhesive layer is 3 μm to 10 μm.

[0014] Preferably, the thickness of the chloroprene rubber outer sheath is 1 mm to 4 mm.

[0015] Beneficial effects of this application:

[0016] 1. By optimizing the original two control cores into a dual-core integrated control core, the two conductors arranged side by side are coated in a PFA insulation coating and a connecting rib is formed, which effectively maintains the spacing between the two conductors and prevents the cores from being strung together, improves the mechanical strength, and is not easily deformed during cable bending, which helps prevent wire and core breakage, ensures the stability of the transmission characteristics, and has better durability.

[0017] 2. The cable core is coated with a cross-linked fluororubber longitudinal hole insulator. The cross-linked fluororubber longitudinal hole insulator has good physical and mechanical properties and high elasticity, which helps to maintain the roundness and balance of the cable core structure. The longitudinal hole is filled with a para-type fully aromatic copolyamide stretched fiber core material to improve the flexibility and mechanical strength of the cross-linked fluororubber longitudinal hole insulator, enhance the bending resistance, and reduce the lateral pressure on the dual-core integrated control core and the oxygen-free copper strand when the cable is bent, reduce local stress concentration, prevent wire breakage, wire breakage, and core breakage, improve safety and reliability, ensure stable electrical properties, and have better durability and applicability.

[0018] 3. The conductor is made of oxygen-free copper strands. The oxygen-free copper monofilaments are twisted to form oxygen-free copper strands, which are then twisted again to form oxygen-free copper strands. The structural strength is higher. When the cable bends and moves, it helps to improve the flexibility and bending resistance, inhibit the occurrence of wire breaks, ensure stable electrical characteristics, enhance safety and reliability, and have better durability.

[0019] 4. By adding AFRP reinforced wrapping layer, it is beneficial to improve the flexibility of the cable, enhance the tensile strength of the outer sheath, reduce the torque during bending, reduce the stress concentration problem of the cross-linked fluororubber longitudinal hole insulator, protect the cable and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Description of reference numerals:

[0022] 1-Electroplated spring tube, 2-Dual-core integrated control wire core, 3-Oxygen-free copper strands, 4-Para-type fully aromatic copolyamide stretched fiber core material, 5-Control wire core conductor, 6-PFA insulation coating, 7-Connecting ribs, 8-Cross-linked fluororubber longitudinal hole insulator, 9-AFRP reinforced winding layer, 10-Chloroprene rubber outer sheath, 11-Longitudinal hole. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1 The anti-deformation slow-pressure welding gun cable of the embodiment of the present application includes an electroplated spring tube 1, and the outer diameter of the electroplated spring tube 1 is 8.5 mm. A double-core integrated control core 2 and a plurality of oxygen-free copper strands 3 are twisted around the outside of the electroplated spring tube 1 to form a cable core. The double-core integrated control core 2 includes two control core conductors 5 arranged side by side and are jointly coated in a PFA insulating coating 6. Specifically, the control core conductor 5 is composed of a plurality of tinned copper monofilaments with a wire diameter of 0.02 mm to 0.04 mm. The PFA insulating coating 6 is formed with a connecting rib 7 on the interval between the two control core conductors 5. The oxygen-free copper strand 3 is composed of a plurality of oxygen-free copper stranded wires twisted together, and the oxygen-free copper stranded wire is composed of a plurality of oxygen-free copper monofilaments twisted concentrically. Furthermore, the diameter of the oxygen-free copper stranded wire is 0.16 mm to 0.2 mm, the diameter of the oxygen-free copper monofilament is 0.04 mm to 0.08 mm, the lay directions of the oxygen-free copper stranded wires are the same, the lay lengths of the oxygen-free copper stranded wires are different, and the lay direction of the oxygen-free copper stranded wire is opposite to that of the oxygen-free copper monofilament.

[0025] The cable core is coated with a cross-linked fluororubber longitudinal hole insulator 8, an AFRP reinforced wrapping layer 9 and a chloroprene rubber outer sheath 10 in sequence. The cross-linked fluororubber longitudinal hole insulator 8 is evenly distributed with a number of longitudinal holes 11 in the circumferential direction. The longitudinal holes 11 are filled with a para-type fully aromatic copolyamide stretched fiber core material 4. Furthermore, the outer surface of the cross-linked fluororubber longitudinal hole insulator 8 and the inner surface of the chloroprene rubber outer sheath 10 are both provided with a thermoplastic EVA adhesive layer, and the thickness of the thermoplastic EVA adhesive layer is 3μm to 10μm. In one embodiment, the AFRP reinforced wrapping layer 9 is a double-layer aramid strand structure with reverse spiral wrapping of the inner and outer layers and different winding pitches, and the thickness of the AFRP reinforced wrapping layer 9 is 0.2mm to 0.5mm. The outer diameter of the chloroprene rubber outer sheath 10 is 18 mm to 25 mm, and further, the outer diameter of the chloroprene rubber outer sheath 10 is 18.5 mm, 19 mm, 19.5 mm, 20 mm, 21 mm, 22 mm, 23 mm or 24.5 mm. The thickness of the chloroprene rubber outer sheath 10 is 1 mm to 4 mm.

[0026] 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. Anti-deformation slow-pressure welding gun cable, characterized by: The invention comprises an electroplated spring tube (1), a double-core integrated control wire core (2) and a plurality of oxygen-free copper strands (3) twisted around the outside of the electroplated spring tube (1) to form a cable core, the double-core integrated control wire core (2) comprising two control wire core conductors (5) arranged side by side and wrapped together in a PFA insulating coating (6), the PFA insulating coating (6) having a connecting rib (7) formed on the interval between the two control wire core conductors (5), the oxygen-free copper strands (3) being a plurality of oxygen-free copper strands (5). The stranded wire is composed of multiple twisted wires, wherein the oxygen-free copper stranded wire is composed of a plurality of oxygen-free copper monofilaments twisted concentrically, the outer portion of the cable core is sequentially coated with a cross-linked fluororubber longitudinal hole insulator (8), an AFRP reinforcing sheath (9) and a chloroprene rubber outer sheath (10), the cross-linked fluororubber longitudinal hole insulator (8) is circumferentially evenly provided with a plurality of longitudinal holes (11), the longitudinal holes (11) are filled with a para-type fully aromatic copolyamide stretched fiber core material (4), and the outer diameter of the chloroprene rubber outer sheath (10) is 18 mm to 25 mm.

2. The anti-deformation slow-pressure welding gun cable according to claim 1 is characterized in that: The outer diameter of the electroplated spring tube (1) is 8.5 mm.

3. The anti-deformation slow-pressure welding gun cable according to claim 1 is characterized in that: The diameter of the oxygen-free copper stranded wire is 0.16 mm to 0.2 mm, and the diameter of the oxygen-free copper monofilament wire is 0.04 mm to 0.08 mm.

4. The anti-deformation slow-pressure welding gun cable according to claim 1 is characterized in that: The oxygen-free copper strands have the same twist directions and different twist lengths.

5. The anti-deformation slow-pressure welding gun cable according to claim 1 is characterized in that: The twisting direction of the oxygen-free copper stranded wire is opposite to that of the oxygen-free copper monofilament.

6. The anti-deformation slow-pressure welding gun cable according to claim 1 is characterized in that: The control line core conductor (5) is composed of a plurality of tinned copper monofilaments with a wire diameter of 0.02 mm to 0.04 mm.

7. The anti-deformation slow-pressure welding gun cable according to claim 1 is characterized in that: The outer diameter of the chloroprene rubber outer sheath (10) is 18.5 mm, 19 mm, 19.5 mm, 20 mm, 21 mm, 22 mm, 23 mm or 24.5 mm.

8. The anti-deformation slow-pressure welding gun cable according to claim 1 is characterized in that: The AFRP reinforcement wrapping layer (9) is a structure in which inner and outer double layers of aramid strands are spirally wrapped in opposite directions and have different winding pitches. The thickness of the AFRP reinforcement wrapping layer (9) is 0.2 mm to 0.5 mm.

9. The anti-deformation slow-pressure welding gun cable according to claim 1, characterized in that: The outer surface of the cross-linked fluororubber vertical hole insulator (8) and the inner surface of the chloroprene rubber outer sheath (10) are both provided with a thermoplastic EVA adhesive layer, and the thickness of the thermoplastic EVA adhesive layer is 3 μm to 10 μm.

10. The anti-deformation slow-pressure welding gun cable according to claim 1, characterized in that: The thickness of the chloroprene rubber outer sheath (10) is 1 mm to 4 mm.

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