CN219553276U - Small-diameter light bending-resistant shielding multi-core cable - Google Patents

Abstract

The utility model discloses a small-diameter light bending-resistant shielding multi-core cable, which comprises a first wire core body formed by twisting five inner twisted wire cores and an inner core material, wherein the outer part of the first wire core body is sequentially coated with a polyester fiber plain weave winding layer, a conductive fiber winding inner shielding layer and a fluororesin belt inner winding antifriction layer, six power wire cores, three drain wires and three outer twisted wire cores are sequentially twisted with the outer part of the outer core material around the fluororesin belt inner winding antifriction layer to form a second wire core body, the outer part of the second wire core body is sequentially coated with a fluororesin belt outer winding antifriction layer, a conductive fiber winding outer shielding layer, a nylon resin anticorrosion layer and a polyurethane outer sheath, and the outer diameter of the polyurethane outer sheath is 4.6-8 mm. The cable effectively reduces the outer diameter of the cable, has better flexibility and bending resistance, and has stable noise shielding performance.

Description

Small-diameter light bending-resistant shielding multi-core cable

Technical Field

The utility model belongs to the technical field of cables, and particularly relates to a small-diameter light anti-bending shielding multi-core cable.

Background

In an automated industrial production line, multi-core cables are often used for robots, mobile driving systems, and the like. Due to the rapid development of the miniaturization application trend and the transmission technology, the maintenance test technology and the like of robots, the multi-core cable is developed towards the preparation direction of diameter reduction and light weight, however, all wire cores of the existing multi-core cable are intensively stranded in a central cable core, the outer diameter of the cable is larger and larger along with the increase of the number of the wire cores, the flexibility and the bending resistance of the cable are reduced, the shielding effect is unstable, the signal transmission attenuation is large, the normal action of the robots is influenced, and hidden danger is brought to the normal safety production order.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the small-diameter light-weight bending-resistant shielding multi-core cable, which reasonably distributes twisted pair wire cores, power wire cores and drain wires in different layers, has balanced internal structure of the cable cores, effectively reduces the outer diameter of the cable, has better flexibility and bending resistance, reduces signal attenuation and has stable noise shielding performance.

The utility model solves the technical problems through the following technical proposal.

The utility model provides a thin-diameter lightweight anti-bending shielding multicore cable, includes five inside pair twisted wire cores and the common transposition of counterpoint full aromatic copolyamide tensile fiber inlayer core constitution first line core, the outside cladding of first line core has polyester fiber plain weave around covering, conducting fiber winding inner shielding layer and the interior friction reducing layer of wrapping of fluororesin area in proper order, inside pair twisted wire core hank to with first line core body hank to opposite, six power supply core, three drain wire and three outside pair twisted wire core are around the outside of the interior friction reducing layer of fluororesin area and the tensile fiber inlayer core of counterpoint full aromatic copolyamide are stranded jointly and are constituted the second line core body, outside pair twisted wire core hank to with the second line core body hank to opposite, first line core body with the second line core body hank is the same, the outside cladding of the second line core body has the outside of fluororesin area to wrap up layer, conducting fiber winding outer shielding layer, the anti-corrosion coating of fluororesin and the outer sheath of polyurethane, first line core body and second body hank are 50mm, the outer diameter of the outer friction reducing layer of fluororesin area is wrapped up to the outer diameter of the fluororesin area is 20.8 mm.

Preferably, the winding distance of the fluororesin belt outer wrapping antifriction layer is 2 to 3 times of the winding distance of the fluororesin belt inner wrapping antifriction layer.

Preferably, the inner twisted wire core and the outer twisted wire core are formed by twisting two insulating wire cores, the insulating wire cores comprise a first inner conductor and a PFA insulating layer, the first inner conductor is formed by concentrically twisting a plurality of tin-plated copper monofilaments with diameters of 0.02mm to 0.05mm, and the tin-plated copper monofilaments are twisted in opposite directions to the first wire core body.

Preferably, the power wire core comprises a second inner conductor and an FEP insulating layer, the second inner conductor is formed by concentrically twisting a plurality of tinned copper wires with diameters of 0.05mm to 0.1mm, and the twisting direction of the tinned copper wires is opposite to that of the second wire core body.

Preferably, the thickness of the fluororesin in-band wrapping antifriction layer and the fluororesin out-band wrapping antifriction layer is not more than 0.03mm.

Preferably, the inner surface of the fluororesin in-band wrapped antifriction layer and the outer surface of the fluororesin out-band wrapped antifriction layer are both electroplated with a copper foil layer.

Preferably, the copper foil layer has a thickness of 8 μm to 12 μm.

Preferably, the conductive fiber winding inner shielding layer and the conductive fiber winding outer shielding layer are both in a conductive fiber bundle spiral winding structure, the conductive fiber bundles are formed by twisting two polyacrylonitrile-based carbon fibers with different wire diameters and coating copper conductive coatings, and the wire diameters of the polyacrylonitrile-based carbon fibers are not more than 20 mu m.

Preferably, the thickness of the conductive fiber wound inner shielding layer and the conductive fiber wound outer shielding layer is 0.05mm to 0.3mm.

Preferably, the inner wrapping antifriction layer of the fluororesin belt and the outer wrapping antifriction layer of the fluororesin belt are both of a multilayer lapping and wrapping structure of the fluororesin wrapping belt.

The utility model has the beneficial effects that:

1. five internal twisted wire cores, six power wire cores, three drain wires and three external twisted wire cores are reasonably arranged in the first wire core body and the second wire core body in a layering manner, the structure is balanced, concentrated arrangement in one layer of cable core is avoided, the outer diameter of the cable is effectively reduced, the preparation of the diameter reduction is realized, the first wire core body and the second wire core body are respectively coated with a fluororesin in-band wrapping antifriction layer and a fluororesin out-of-band wrapping antifriction layer, excellent slidability is formed, a better antifriction effect is obtained, a rolling bearing-like effect is formed, the sliding friction resistance is small, the local stress concentration is reduced, the torque force is reduced, and the flexibility and the bending resistance of the cable are improved.

2. The inner twisted wire core is twisted opposite to the first wire core body, the outer twisted wire core is twisted opposite to the second wire core body, the first wire core body and the second wire core body are twisted in the same direction, and when the cable is repeatedly subjected to bending, the cable is beneficial to inhibiting the deformation and wire breakage of the conductor of the twisted wire core, the bending resistance is enhanced, and the durability is better.

3. The winding distance of the first wire core body and the second wire core body is optimized to be 50-65 mm, and the winding distance of the fluorine resin in-band wrapping antifriction layer and the fluorine resin out-band wrapping antifriction layer is optimized to be 20-60% of the winding distance of the second wire core body, so that the bending resistance of the cable is improved.

4. The metal shielding layer is removed, the light design is realized, the conductive fiber bundles of the conductive fiber wound inner shielding layer and the conductive fiber wound outer shielding layer are formed by twisting polyacrylonitrile-based carbon fibers and coating copper conductive coatings, and the cable weight is reduced, the cost is reduced and the preparation of small diameter light is realized on the basis of ensuring the stable shielding performance. Copper foil layers are formed on the inner surface of the inner wrapping antifriction layer of the fluororesin belt and the outer surface of the outer wrapping antifriction layer of the fluororesin belt in an electroplating manner, and the copper foil layers and the inner and outer shielding layers of the conductive fiber are wound to form a shielding conductor together respectively, so that the shielding performance is enhanced, the signal attenuation is reduced, the anti-interference capability is improved, and the noise shielding performance is ensured to be stable.

Drawings

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

Reference numerals illustrate:

1-internal twisted wire core, 2-para-type wholly aromatic copolyamide stretching fiber inner layer core material, 3-polyester fiber plain weave cloth wrapping layer, 4-conductive fiber wrapping inner shielding layer, 5-fluororesin in-band wrapping antifriction layer, 6-power wire core, 7-drain wire, 8-external twisted wire core, the cable comprises a 9-para-type wholly aromatic copolyamide stretching fiber outer core material, a 10-fluororesin outer wrapping antifriction layer, a 11-conductive fiber winding outer shielding layer, a 12-nylon resin anticorrosive layer, a 13-polyurethane outer sheath, a 14-insulating wire core, a 15-first inner conductor, a 16-PFA insulating layer, a 17-second inner conductor and an 18-FEP insulating layer.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, the small-diameter light-weight anti-bending shielding multi-core cable provided by the embodiment of the utility model comprises five inner twisted wire cores 1 and a para-type wholly aromatic copolyamide stretching fiber inner layer core material 2 which are twisted together to form a first wire core body, wherein the outer part of the first wire core body is sequentially coated with a polyester fiber plain weave cloth wrapping layer 3, a conductive fiber winding inner shielding layer 4 and a fluororesin in-band wrapping antifriction layer 5. The internal twisted wire core 1 is twisted in the opposite direction to the first wire core body.

Six power wire cores 6, three drain wires 7 and three external twisted wire cores 8 are twisted together with the external of the para-type wholly aromatic copolyamide stretching fiber outer layer core material 9 around the fluororesin in-band wrapping antifriction layer 5 to form a second wire core body. The external twisted wire core 8 is twisted in the opposite direction to the second wire core, and the first wire core and the second wire core are twisted in the same direction. The second wire core body is sequentially coated with a fluororesin outer wrapping antifriction layer 10, a conductive fiber winding outer shielding layer 11, a nylon resin anticorrosive layer 12 and a polyurethane outer sheath 13. The polyurethane outer sheath 13 has an outer diameter of 4.6mm to 8mm.

In one embodiment, the inner twisted pair wire core 1 and the outer twisted pair wire core 8 are formed by twisting two insulated wire cores 14, wherein the insulated wire cores 14 comprise a first inner conductor 15 and a PFA insulating layer 16, the first inner conductor 15 is formed by concentrically twisting a plurality of tin-plated copper monofilaments with diameters of 0.02mm to 0.05mm, and the tin-plated copper monofilaments are twisted to be opposite to the first wire core body. In one embodiment, the power wire core 6 includes a second inner conductor 17 and an FEP insulating layer 18, where the second inner conductor 17 is formed by concentrically twisting a plurality of tin-plated copper wires with diameters of 0.05mm to 0.1mm, and the twisting direction of the tin-plated copper wires is opposite to that of the second wire core body. In one embodiment, the conductive fiber winding inner shielding layer 4 and the conductive fiber winding outer shielding layer 11 are both in a conductive fiber bundle spiral winding structure, the conductive fiber bundles are formed by twisting two polyacrylonitrile-based carbon fibers with different wire diameters and coating copper conductive coatings, and the wire diameters of the polyacrylonitrile-based carbon fibers are not more than 20 μm. Further, the thickness of the conductive fiber wound inner shielding layer 4 and the conductive fiber wound outer shielding layer 11 is 0.05mm to 0.3mm. In one embodiment, the inner surface of the fluororesin in-band wrapped friction reducing layer 5 and the outer surface of the fluororesin out-band wrapped friction reducing layer 10 are both electroplated with a copper foil layer, and further, the copper foil layer has a thickness of 8 μm to 12 μm.

The twisting distance of the first wire core body and the second wire core body is 50mm to 65mm, the winding distance of the fluororesin in-band wrapping antifriction layer 5 and the fluororesin out-of-band wrapping antifriction layer 10 is 20% to 60% of the twisting distance of the second wire core body, and further, the winding distance of the fluororesin out-of-band wrapping antifriction layer is 2 to 3 times of the winding distance of the fluororesin in-band wrapping antifriction layer. The inner wrapping antifriction layer 5 of the fluororesin belt and the outer wrapping antifriction layer 10 of the fluororesin belt are both of a multilayer lapping and wrapping structure of the fluororesin wrapping belt, and the thickness of the multilayer lapping and wrapping structure is not more than 0.03mm.

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

Claims (10)

1. The utility model provides a thin-diameter lightweight anti-bending shielding multicore cable which characterized in that: including five inside pair twisted wire core (1) and the tensile fibrous inlayer core (2) of pair position formula wholly aromatic copolyamide are stranded jointly and are constituted the first line core, the outside cladding of the first line core has polyester fiber plain weave around covering (3), conductive fiber winding inner shield layer (4) and fluororesin in-band around package antifriction layer (5) in proper order, inside pair twisted wire core (1) twist with first line core body twisted to opposite, six power supply core (6), three drain wire (7) and three outside pair twisted wire core (8) are around the outside of fluororesin in-band around package layer (5) outside with the tensile fibrous inlayer core (9) of pair position formula wholly aromatic copolyamide are stranded jointly and are constituted the second line core, outside pair twisted wire core (8) twist with the second line core twisted to opposite, the first line core with the second line core is in-band same, the outside cladding has fluororesin out-of-band around package antifriction layer (10), conductive fiber winding outer shield layer (11), the anticorrosive layer (12) and the polyurethane (13) are around the second line core (8) outside the antifriction layer (5) is the second line core is the second winding to the second wire core is the second winding to the antifriction layer (5 mm) is the outer diameter of the second is the 20.5 mm.

2. The reduced diameter lightweight bend resistant shielded multi-core cable of claim 1, wherein: the winding distance of the fluororesin belt outer winding antifriction layer (10) is 2 to 3 times of the winding distance of the fluororesin belt inner winding antifriction layer (5).

3. The reduced diameter lightweight bend resistant shielded multi-core cable of claim 1, wherein: the inner twisted wire core (1) and the outer twisted wire core (8) are formed by twisting two insulating wire cores (14), each insulating wire core (14) comprises a first inner conductor (15) and a PFA insulating layer (16), each first inner conductor (15) is formed by concentrically twisting a plurality of tin-plated copper monofilaments with diameters of 0.02mm to 0.05mm, and the twisting direction of each tin-plated copper monofilament is opposite to that of the first wire core body.

4. The reduced diameter lightweight bend resistant shielded multi-core cable of claim 1, wherein: the power wire core (6) comprises a second inner conductor (17) and an FEP insulating layer (18), wherein the second inner conductor (17) is formed by concentrically twisting a plurality of tinned copper wires with diameters of 0.05-0.1 mm, and the twisting direction of the tinned copper wires is opposite to that of the second wire core body.

5. The reduced diameter lightweight bend resistant shielded multi-core cable of claim 1, wherein: the thickness of the fluororesin in-band wrapping antifriction layer (5) and the fluororesin out-band wrapping antifriction layer (10) is not more than 0.03mm.

6. The reduced diameter lightweight bend resistant shielded multi-core cable of claim 1, wherein: the inner surface of the fluororesin in-band wrapping antifriction layer (5) and the outer surface of the fluororesin out-band wrapping antifriction layer (10) are both electroplated to form a copper foil layer.

7. The reduced diameter lightweight bend resistant shielded multi-core cable of claim 6, wherein: the copper foil layer has a thickness of 8 μm to 12 μm.

8. The reduced diameter lightweight bend resistant shielded multi-core cable of claim 1, wherein: the conductive fiber winding inner shielding layer (4) and the conductive fiber winding outer shielding layer (11) are of a conductive fiber bundle spiral winding structure, the conductive fiber bundles are formed by twisting two polyacrylonitrile-based carbon fibers with different wire diameters and coating copper conductive coatings, and the wire diameters of the polyacrylonitrile-based carbon fibers are not more than 20 mu m.

9. The reduced diameter lightweight bend resistant shielded multi-core cable of claim 1, wherein: the thickness of the conductive fiber winding inner shielding layer (4) and the thickness of the conductive fiber winding outer shielding layer (11) are both 0.05mm to 0.3mm.

10. The reduced diameter lightweight bend resistant shielded multi-core cable of claim 1, wherein: the fluororesin in-band wrapping antifriction layer (5) and the fluororesin out-band wrapping antifriction layer (10) are both of a fluororesin wrapping band multilayer lapping and wrapping structure.