CN222883278U

CN222883278U - Noise-resistant bending-resistant multi-core shielded cable

Info

Publication number: CN222883278U
Application number: CN202421766050.6U
Authority: CN
Inventors: 吴彬; 黄桂领; 范姝丹
Original assignee: Zhejiang Products Zhongda Cable Co ltd
Current assignee: Zhejiang Products Zhongda Cable Co ltd
Priority date: 2024-07-25
Filing date: 2024-07-25
Publication date: 2025-05-16
Anticipated expiration: 2034-07-25

Abstract

The utility model discloses a noise-resistant and anti-bending multi-core shielded cable, comprising two power line cores and two control line cores arranged in a cross shape and twisted together with a para-type fully aromatic copolyamide stretched fiber filling core material to form a cable core, the cable core is coated with a PET resin wrapping layer, an aluminum-plastic composite tape wrapping shielding layer, a metal wire mixed shielding layer and an irradiated cross-linked linear low-density polyethylene outer sheath layer in sequence, the winding distance of the aluminum-plastic composite tape wrapping shielding layer is greater than the winding distance of the PET resin wrapping layer, the metal wire mixed shielding layer is composed of an inner layer of aluminum-magnesium wire and an outer layer of tinned copper wire, which are mutually reversely spirally wound and woven, and the inner layer of aluminum-magnesium wire winding distance and the outer layer of tinned copper wire winding distance are both 14mm to 35mm and are three to five times the outer diameter of the aluminum-plastic composite tape wrapping shielding layer. The cable has better anti-bending performance, avoids the occurrence of core and wire breakage of the conductor and the shielding layer, has better noise resistance, and is durable.

Description

Noise-resistant bending-resistant multi-core shielded cable

Technical Field

The application belongs to the technical field of cables, and particularly relates to a noise-resistant bending-resistant multi-core shielding cable.

Background

In an automatic industrial production line, a multi-core cable is commonly used for robots, mobile driving systems and the like, a cable core is a circular section structure formed by twisting a power wire core, a control wire core and a filling core material, and the multi-core cable needs to have good flexibility and shielding performance and also needs to have good guarantee on electrical characteristics of long-distance transmission. Under normal working conditions, the multi-core cable needs to be subjected to repeated bending actions, the outer diameter sizes of all the wire cores are different, the bending resistance is poor, after repeated bending, the extrusion force from the filling core material is easy to cause the deformation of the circular section structure of the cable core, and the extrusion force born between the wire cores is easy to break the wire and the core. Moreover, the total shielding layer of the cable adopts a copper wire braiding shielding layer structure, the copper wire diameter is generally not more than 0.2mm, and after repeated bending, the shielding layer is easy to break, so that the shielding effect is unstable, the noise resistance is poor, the internal signal or noise leakage to the outside can not be sufficiently and effectively restrained, the interference from the external signal is restrained, the electrical characteristics of the cable are seriously affected, and the durability is poor.

Disclosure of utility model

Aiming at the defects of the prior art, the application aims to provide the noise-resistant bending-resistant multi-core shielding cable, which has the advantages of optimizing the cable core and shielding layer structure, having better bending resistance, avoiding the occurrence of core breakage and wire breakage of conductors and shielding layers, ensuring stable shielding performance, having better noise resistance and improving durability.

The application solves the technical problems through the following technical proposal.

The utility model provides a noise-resistant anti-bending multi-core shielding cable, is cross arrangement and jointly with the strand of the stretch fiber filling core of counterpoint full aromatic copolyamide including two power core and two control core and constitutes the cable core, the cable core lay length is 28mm to 70mm, the cable core outside cladding has PET resin around covering, plastic-aluminum composite tape around covering shielding layer, metal wire mixed plaiting shielding layer and irradiation crosslinked linear low density polyethylene oversheath layer in proper order, the wind direction of plastic-aluminum composite tape around covering shielding layer is opposite with PET resin around covering, the wind distance of plastic-aluminum composite tape around covering shielding layer is greater than PET resin around covering wind distance, the metal wire mixed plaiting shielding layer is that inlayer aluminium magnesium wire and outer tinned copper wire are mutual reverse spiral winding and weave the constitution, inlayer aluminium magnesium wire wind distance and outer tinned copper wire wind distance are 14mm to 35mm and are three to five times of plastic-aluminum composite tape around covering shielding layer external diameter, inlayer aluminium magnesium wire wind distance and outer tinned copper wire wind distance all are less than the cable core, inlayer magnesium wire wind distance is greater than 0.1mm and outer tinned copper wire diameter.

Preferably, the PET resin is wound around the layer in the same direction as the cable core.

Preferably, the aluminum-plastic composite belt wrapping shielding layer is of an aluminum-plastic composite belt spiral covering and wrapping structure, and the covering rate is not less than 25%, the aluminum-plastic composite belt comprises a PET film, and an aluminum foil layer is arranged on the inner surface of the PET film.

Preferably, the power core comprises a power core conductor and an irradiation cross-linked low density polyethylene insulation layer.

Preferably, the power wire core conductor is formed by twisting a plurality of tinned copper monofilaments with diameters of 0.1mm to 0.2 mm.

Preferably, the control wire core is formed by twisting two insulated wire cores, the twisting directions of the two control wire cores are the same, the twisting pitches are different, two insulated wire core axis connecting wires of one control wire core and two power wire core axis connecting wires are arranged in parallel, and two insulated wire core axis connecting wires of the other control wire core and two power wire core axis connecting wires are arranged vertically.

Preferably, the insulated wire core comprises an inner conductor and an XLPE insulation layer.

Preferably, the inner conductor is formed by concentrically twisting a plurality of tinned copper monofilaments with the wire diameter of 0.05mm to 0.1 mm.

Preferably, the control wire core is twisted in the same direction as the cable core.

Preferably, the PET resin wrapping layer is a PET resin tape multilayer lap wrapping structure, and the thickness of the PET resin tape is 8-20 μm.

The application has the beneficial effects that:

1. Through increasing the PET resin around the covering between cable core and plastic-aluminum composite tape around the package shielding layer, the conductivity of PET is higher, and the PET resin winds around the covering and twists to the same with the cable core, in the cable bending action in-process, is favorable to restraining control core pine and takes place, is favorable to reducing the influence that produces the interference between two insulating cores of control core, reinforcing anti external electromagnetic wave interference ability, improves the noise tolerance, guarantees stable shielding characteristic, and the durability is better.

2. Through optimizing shielding layer structure, the aluminum-plastic composite belt is around wrapping shielding layer around to opposite with PET resin around the covering to, aluminum-plastic composite belt is around wrapping shielding layer around the distance to be greater than PET resin around the covering and is wound the distance, helps preventing that aluminum-plastic composite belt from wrapping shielding layer pine takes off, guarantees stable cover rate, promotes noise resistance. The PET film with the aluminum-plastic composite tape wrapping shielding layer is beneficial to reducing stress concentration of the metal wire mixed-woven shielding layer and reducing torque force. The metal wire mixed braiding shielding layer adopts a structure that tin-plated copper wires and aluminum magnesium wires are mutually in reverse spiral winding braiding, the tin-plated copper wires are high in rigidity and better in conductivity, the tin-plated copper wires and the aluminum magnesium wires are mutually in reverse spiral winding braiding to form the shielding layer, flexibility and rigidity are considered, the wire diameter of the tin-plated copper wires positioned on the outer layer is larger than that of the aluminum magnesium wires of the inner layer, the wire diameter of the aluminum magnesium wires of the inner layer is larger than 0.1mm, wire breakage of the shielding layer is restrained when a cable is bent, the wire winding distance of the inner layer aluminum magnesium wires and the wire winding distance of the outer layer tin-plated copper wires are both 14mm to 35mm and are three to five times the outer diameter of the aluminum plastic composite tape winding shielding layer, the wire winding distance of the inner layer aluminum magnesium wires and the wire winding distance of the outer layer tin-plated copper wires are both smaller than the cable core lay, the surface resistance of the shielding layer is prevented from being increased, the stability of shielding performance is guaranteed, and the noise resistance is improved, and the durability is better.

3. The buffer is formed by adding the para-type wholly aromatic copolyamide stretch fiber filling core material between the power core and the control core, so that the round section structure of the cable core is maintained, extrusion force and lateral pressure are reduced, bending resistance is improved, local stress concentration of each core is reduced, wire breakage and wire breakage of each core conductor are suppressed, and durability and applicability are improved when the cable is repeatedly bent.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present application.

Reference numerals illustrate:

The cable comprises a 1-power supply cable core, a 2-control cable core, a 3-para-type wholly aromatic copolyamide stretching fiber filling core material, a 4-PET resin wrapping layer, a 5-aluminum plastic composite tape wrapping shielding layer, a 6-metal wire mixed braiding shielding layer, a 7-irradiation crosslinking linear low-density polyethylene outer sheath layer, an 8-power supply cable core conductor, a 9-irradiation crosslinking low-density polyethylene insulating layer, a 10-insulating cable core, an 11-inner conductor and a 12-XLPE insulating layer.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Referring to fig. 1, the noise-resistant bending-resistant multi-core shielding cable of the embodiment of the application comprises two power wire cores 1 and two control wire cores 2 which are arranged in a cross shape and are twisted together with a para-type wholly aromatic copolyamide stretching fiber filling core material 3 to form a cable core, wherein the cable core has a lay length of 28mm to 70mm. Specifically, the power wire core 1 comprises a power wire core conductor 8 and an irradiation crosslinking low-density polyethylene insulating layer 9, and further, the power wire core conductor 8 is formed by twisting a plurality of tinned copper monofilaments with diameters of 0.1mm to 0.2 mm. The control wire core 2 is formed by twisting two insulating wire cores 10, wherein the insulating wire cores 10 comprise an inner conductor 11 and an XLPE insulating layer 12, and further, the inner conductor 11 is formed by concentrically twisting a plurality of tin-plated copper monofilaments with the wire diameters of 0.05mm to 0.1 mm. The two control wire cores 2 are identical in twisting direction and different in twisting distance, the axis connecting line of the two insulating wire cores 10 of one control wire core 2 and the axis connecting line of the two power wire cores 1 are arranged in parallel, and the axis connecting line of the two insulating wire cores 10 of the other control wire core 2 and the axis connecting line of the two power wire cores 1 are arranged vertically. The twisting direction of the control wire core 2 is the same as that of the cable core.

The cable core is sequentially coated with a PET resin wrapping layer 4, an aluminum-plastic composite tape wrapping shielding layer 5, a metal wire mixed-braiding shielding layer 6 and an irradiation crosslinking linear low-density polyethylene outer sheath layer 7. The PET resin wrapping layer 4 is wrapped in the same direction as the cable core. In one embodiment, the PET resin wrapping layer 4 is a PET resin tape multilayer lap wrapping structure, and the thickness of the PET resin tape is 8 μm to 20 μm. The winding direction of the aluminum-plastic composite belt winding shielding layer 5 is opposite to the winding direction of the PET resin winding layer 4, and the winding distance of the aluminum-plastic composite belt winding shielding layer 5 is larger than the winding distance of the PET resin winding layer 4. In one embodiment, the aluminum-plastic composite belt wrapping shielding layer 5 is of an aluminum-plastic composite belt spiral covering and wrapping structure, and the covering rate is not less than 25%, the aluminum-plastic composite belt comprises a PET film, and an aluminum foil layer is arranged on the inner surface of the PET film. The metal wire mixed braiding shielding layer 6 is formed by mutually reversely spirally winding and braiding inner-layer aluminum magnesium wires and outer-layer tin-plated copper wires, the winding distance of the inner-layer aluminum magnesium wires and the winding distance of the outer-layer tin-plated copper wires are 14mm to 35mm and three to five times the outer diameter of the aluminum-plastic composite belt wrapping shielding layer 5, the winding distance of the inner-layer aluminum magnesium wires and the winding distance of the outer-layer tin-plated copper wires are smaller than the cable core lay length, and the wire diameter of the inner-layer aluminum magnesium wires is larger than 0.1mm and smaller than the wire diameter of the outer-layer tin-plated copper wires.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The anti-bending multi-core shielding cable with the noise resistance is characterized by comprising two power wire cores (1) and two control wire cores (2) which are in crisscross arrangement and are twisted together with a para-type wholly aromatic copolyamide stretching fiber filling core material (3) to form a cable core, wherein the twisting distance of the cable core is 28mm to 70mm, a PET resin wrapping layer (4), an aluminum-plastic composite tape wrapping shielding layer (5), a metal wire mixed-knitting shielding layer (6) and an irradiation crosslinking linear low-density polyethylene outer sheath layer (7) are sequentially wrapped outside the cable core, the winding direction of the aluminum-plastic composite tape wrapping shielding layer (5) is opposite to the winding direction of the PET resin wrapping layer (4), the winding distance of the aluminum-plastic composite tape wrapping shielding layer (5) is larger than the winding distance of the PET resin wrapping layer (4), the metal wire mixed-knitting shielding layer (6) is formed by mutually reversely spirally winding an inner aluminum magnesium wire and an outer tin-plated copper wire, the winding distance of the inner aluminum magnesium wire and the outer tin-plated copper wire is 14mm to 35mm, and the copper wire wrapping distance of the inner aluminum magnesium wire is larger than the inner magnesium wire and the copper wire is smaller than the inner tin wire wrapping distance of the inner copper wire (1.0 mm.

2. The noise-resistant bending-resistant multi-core shielded cable according to claim 1, wherein the PET resin is wound around the cladding (4) in the same direction as the cable core.

3. The anti-bending multi-core shielding cable with noise resistance according to claim 1, wherein the aluminum-plastic composite belt wrapping shielding layer (5) is of an aluminum-plastic composite belt spiral covering and wrapping structure, the covering rate is not less than 25%, the aluminum-plastic composite belt comprises a PET film, and an aluminum foil layer is arranged on the inner surface of the PET film.

4. The noise-resistant bending-resistant multi-core shielded cable according to claim 1, wherein the power core (1) comprises a power core conductor (8) and an irradiation cross-linked low-density polyethylene insulating layer (9).

5. The noise-resistant bending-resistant multi-core shielded cable according to claim 4, wherein the power core conductor (8) is formed by twisting a plurality of tinned copper monofilaments having diameters of 0.1mm to 0.2 mm.

6. The noise-resistant bending-resistant multi-core shielded cable according to claim 1, wherein the control wire core (2) is formed by twisting two insulated wire cores (10), the twisting directions of the two control wire cores (2) are the same, the twisting pitches are different, the axis connecting wires of the two insulated wire cores (10) and the axis connecting wires of the two power wire cores (1) of one control wire core (2) are arranged in parallel, and the axis connecting wires of the two insulated wire cores (10) and the axis connecting wires of the two power wire cores (1) of the other control wire core (2) are arranged vertically.

7. The noise-resistant bending-resistant multi-core shielded cable according to claim 6, wherein the insulated core (10) comprises an inner conductor (11) and an XLPE insulation layer (12).

8. The noise-resistant bending-resistant multi-core shielded cable according to claim 7, wherein the inner conductor (11) is formed by concentrically twisting a plurality of tin-plated copper monofilaments having a wire diameter of 0.05mm to 0.1 mm.

9. The noise-resistant bending-resistant multi-core shielded cable according to claim 6, wherein the control wire core (2) is twisted in the same direction as the cable core.

10. The noise-resistant bending-resistant multi-core shielded cable according to claim 1, wherein the PET resin wrapping layer (4) is a PET resin tape multi-layer lap wrapping structure, and the PET resin tape thickness is 8 μm to 20 μm.