CN219497409U - Durable 4-core insulating shielded cable - Google Patents

Abstract

The utility model discloses a durable 4-core insulating shielding cable, which comprises two power wire cores and a signal wire core which are twisted together to form a cable core, wherein the signal wire core comprises a wire core body formed by arranging two insulating wire cores in parallel, the outer part of the wire core body is coated with a PET resin wrapping layer and a copper foil wire sub-winding shielding layer, the insulating wire core comprises a copper foil conductor and a foamed polyethylene insulating layer, the copper foil conductor is formed by longitudinally wrapping copper foil outside a para-type wholly aromatic copolyamide stretching fiber core material, the outer part of the cable core is coated with an ETFE resin wrapping layer, a copper foil wire total winding shielding layer and a polyurethane elastomer outer sheath layer, the copper foil wire total winding shielding layer and the copper foil wire sub-winding shielding layer are of a plurality of copper foil wire side-by-side spiral winding structures, and the copper foil wire is formed by spirally wrapping a copper-plastic composite tape outside a para-type wholly aromatic copolyamide stretching fiber strand. The cable shielding layer has better tensile resistance, effectively reduces the occurrence of broken wires and cracks of the shielding layer, and ensures stable shielding performance.

Description

Durable 4-core insulating shielded cable

Technical Field

The application relates to the technical field of cables, in particular to a durable 4-core insulating shielding cable.

Background

Multi-core cables are commonly used in industrial machinery, mobile drive systems, and the like. Under the running state of machine equipment, the multi-core cable needs to bear repeated bending action, and when a shielding layer or a copper foil shielding layer of a common copper wire winding structure is subjected to bending torsion, the tensile resistance is insufficient, the condition of broken wires or cracks of the shielding layer is easy to occur, the shielding effect is unstable, the electrical characteristics are seriously influenced, and the durability and the usability are poor.

Disclosure of Invention

The utility model provides a to the not enough of prior art, the technical problem that solves is to provide a durable 4 core insulation shielded cable, and the stretch-proofing performance of shielding layer is better, effectively reduces shielding layer broken string and crazing and takes place, guarantees stable shielding performance, improves durable usability.

The technical problems are solved by the following technical scheme.

The utility model provides a durable 4 insulating shielded cable of core, includes two power supply core and a signal core common transposition constitution cable core, the signal core includes two insulating core parallel arrangement constitution sinle silk bodies, the outside cladding of sinle silk body has PET resin around covering and copper foil line branch winding shielding layer in proper order, insulating core includes copper foil conductor and foaming polyethylene insulating layer, copper foil conductor is by the outside longitudinal wrapping copper foil of the stretching fiber core of counterpoint full aromatic copolyamide, the outside cladding of cable core has ETFE resin around covering, copper foil line total winding shielding layer and polyurethane elastomer outer sheath layer in proper order, copper foil line total winding shielding layer with copper foil line branch winding shielding layer is a plurality of copper foil line side by side spiral winding structures, copper foil line is the outside spiral winding copper plastic composite tape of the stretching fiber strand of counterpoint full aromatic copolyamide and constitutes.

Preferably, the copper-plastic composite belt comprises a PET film base layer, and a copper foil layer is electroplated on the outer surface of the PET film base layer.

Preferably, the thickness of the PET film base layer is 5 to 10 times the thickness of the copper foil layer.

Preferably, the copper foil layer has a thickness of 8 μm to 25 μm.

Preferably, the copper foil conductor is coated with an insulating lubricating silicone grease.

Preferably, the power core comprises a power core conductor and an XLPE insulation layer.

Preferably, the power wire core conductor is formed by concentrically twisting a plurality of tinned copper wires with the wire diameters of 0.05mm to 0.3 mm.

Preferably, the ETFE resin wrapping layer is an ETFE resin tape multilayer lap wrapping structure.

Preferably, the PET resin wrapping layer is a PET resin belt unidirectional spiral lapping and wrapping structure.

Preferably, the outer diameter of the power wire core is smaller than that of the insulating wire core, and the axis connecting line of the power wire core and the signal wire core on the longitudinal section of the cable core is in an isosceles trapezoid shape.

The beneficial effects of this application:

1. the shielding layer structure is optimized, the copper foil wire is divided into a copper foil wire side-by-side spiral winding structure and is formed by spirally wrapping copper-plastic composite strips outside the aligned wholly aromatic copolyamide stretching fiber stranded wires, the stretching elastic modulus of the aligned wholly aromatic copolyamide stretching fiber stranded wires is larger, the stretching resistance of the shielding layer is greatly improved, the local stress concentration of the shielding layer is reduced, the torque force is reduced, the situation that the shielding layer breaks wires and lines is reduced when the shielding layer is repeatedly bent is favorably inhibited and reduced, the situation that the copper foil shielding layer is easy to crack is eliminated, the stability of the shielding effect is ensured, the signal transmission attenuation is reduced, and the durability and the usability are better.

2. The insulating wire core adopts an optimized copper foil conductor structure, the copper foil conductor is formed by longitudinally covering copper foil outside a para-type wholly aromatic copolyamide stretching fiber core material, the tensile elastic modulus of the para-type wholly aromatic copolyamide stretching fiber core material is large, the tensile strength of the wire core conductor part is greatly improved, the bending resistance is better, the broken core is not easy to occur in the bending process of the cable, the electrical property of the cable is ensured, and the durability is better.

3. Optimize cable core structure, make the axle center line of power core and signal core be isosceles trapezoid, the structure is balanced, and the stress can more evenly distribute on signal core and power core, makes total shielding layer and cable core peripheral distance keep the homogeneity through ETFE resin around the covering, is favorable to reducing signal transmission attenuation, guarantees noise shielding's stability, improves the electrical property of cable, and the durability is better.

Drawings

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

Fig. 1 is a schematic cross-sectional structure of an embodiment of the present application.

In the figure: the cable comprises a 1-power supply cable core, a 2-signal cable core, a 3-insulating cable core, a 4-PET resin wrapping layer, a 5-copper foil wire winding shielding layer, a 6-copper foil conductor, a 7-foamed polyethylene insulating layer, an 8-para-type wholly aromatic copolyamide stretched fiber core material, a 9-copper foil, a 10-ETFE resin wrapping layer, a 11-copper foil wire total winding shielding layer, a 12-polyurethane elastomer outer sheath layer, a 13-power supply cable core conductor and a 14-XLPE insulating layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

As shown in fig. 1, the durable 4-core insulated shielded cable according to the embodiment of the present application includes two power source wire cores 1 and one signal wire core 2 twisted together to form a cable core. The signal wire core 2 comprises two insulating wire cores 3 which are arranged in parallel to form a wire core body, the insulating wire cores 3 comprise copper foil conductors 6 and a foamed polyethylene insulating layer 7, the copper foil conductors 6 are formed by longitudinally wrapping copper foils 9 outside a para-type wholly aromatic copolyamide stretched fiber core material 8, and further, the copper foil conductors 6 are coated with insulating lubricating silicone grease. The outside cladding of sinle silk body has PET resin around covering 4 and copper foil line branch winding shielding layer 5 in proper order, in an embodiment, PET resin around covering 4 is the one-way spiral of PET resin area and takes the lid around the package structure. In one embodiment, the power cord 1 includes a power cord conductor 13 and an XLPE insulation layer 14, and specifically, the power cord conductor 13 is formed by concentrically twisting a plurality of tinned copper wires with a wire diameter of 0.05mm to 0.3 mm. In this embodiment, the outer diameter of the power wire core 1 is smaller than the outer diameter of the insulating wire core 3, and the axial connection line of the power wire core 1 and the signal wire core 2 on the longitudinal section of the cable core is in an isosceles trapezoid shape.

The cable core is sequentially coated with an ETFE resin wrapping layer 10, a copper foil wire total winding shielding layer 11 and a polyurethane elastomer outer sheath layer 12. The copper foil wire total winding shielding layer 11 and the copper foil wire sub-winding shielding layer 5 are of a parallel spiral winding structure of a plurality of copper foil wires, and the copper foil wires are formed by spirally wrapping copper-plastic composite belts outside the para-type wholly aromatic copolyamide stretched fiber stranded wires. Specifically, the copper-plastic composite belt comprises a PET film base layer, wherein a copper foil layer is electroplated on the outer surface of the PET film base layer, and further, the thickness of the PET film base layer is 5-10 times that of the copper foil layer, and preferably, the thickness of the copper foil layer is 8-25 mu m. In one embodiment, the ETFE resin clad layer 10 is an ETFE resin tape multilayer lap-clad structure.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. Durable 4 insulating shielded cable of core, characterized by: including two power sinle silk (1) and a signal sinle silk (2) transposition jointly constitute the cable core, signal sinle silk (2) include two insulating sinle silk (3) parallel arrangement and constitute the sinle silk body, the outside cladding of sinle silk body has PET resin around covering (4) and copper foil line branch winding shielding layer (5) in proper order, insulating sinle silk (3) include copper foil conductor (6) and foaming polyethylene insulating layer (7), copper foil conductor (6) are by the outside longitudinal wrapping copper foil (9) of counterpoint full aromatic copolyamide tensile fiber core (8), the outside cladding of cable core has ETFE resin around covering (10), copper foil line total winding shielding layer (11) and polyurethane elastomer outer sheath (12) in proper order, copper foil line total winding shielding layer (11) with copper foil line branch winding shielding layer (5) are a plurality of copper foil line spiral winding structures side by side, copper foil line is the outside spiral wrapping copper plastic composite band of counterpoint full aromatic copolyamide tensile fiber strand.

2. The durable 4-core insulated shielded cable of claim 1, wherein: the copper-plastic composite belt comprises a PET film base layer, and a copper foil layer is formed on the outer surface of the PET film base layer in an electroplating mode.

3. The durable 4-core insulated shielded cable of claim 2, wherein: the thickness of the PET film base layer is 5 to 10 times of the thickness of the copper foil layer.

4. The durable 4-core insulated shielded cable of claim 2, wherein: the copper foil layer has a thickness of 8 μm to 25 μm.

5. The durable 4-core insulated shielded cable of claim 1, wherein: the copper foil conductor (6) is coated with an insulating lubricating silicone grease.

6. The durable 4-core insulated shielded cable of claim 1, wherein: the power supply wire core (1) comprises a power supply wire core conductor (13) and an XLPE insulating layer (14).

7. The durable 4-core insulated shielded cable of claim 6, wherein: the power wire core conductor (13) is formed by concentrically twisting a plurality of tinned copper wires with the wire diameters of 0.05mm to 0.3 mm.

8. The durable 4-core insulated shielded cable of claim 1, wherein: the ETFE resin wrapping layer (10) is of a multi-layer covering and wrapping structure of the ETFE resin strip.

9. The durable 4-core insulated shielded cable of claim 1, wherein: the PET resin wrapping layer (4) is of a PET resin belt unidirectional spiral lapping and wrapping structure.

10. The durable 4-core insulated shielded cable of claim 1, wherein: the outer diameter of the power wire core (1) is smaller than that of the insulating wire core (3), and the axis connecting line of the power wire core (1) and the signal wire core (2) on the longitudinal section of the cable core is in an isosceles trapezoid shape.