CN217086179U

CN217086179U - Core-breaking-preventing type small-diameter multi-core shielded cable

Info

Publication number: CN217086179U
Application number: CN202220332433.7U
Authority: CN
Inventors: 王超; 姚汪宁; 黄桂领; 王洪超; 邱金波
Original assignee: Zhejiang Zetastone Special Cable Co ltd
Current assignee: Zhejiang Zetastone Special Cable Co ltd
Priority date: 2022-02-14
Filing date: 2022-02-14
Publication date: 2022-07-29
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a prevent disconnected core type thin footpath multicore shielding cable, including power sinle silk, video sinle silk, two difference signal sinle silks and control sinle silk and the transposition type whole aromatic group copolyamide tensile fiber core transposition constitution cable core jointly, the control sinle silk external diameter is greater than power sinle silk external diameter and is less than the video sinle silk external diameter, difference signal sinle silk external diameter are less than the power sinle silk external diameter, and two difference signal sinle silks constitute a set of difference signal sinle silk group and keep interval arrangement through video sinle silk and control sinle silk and power sinle silk, and difference signal sinle silk external diameter is 1.2mm to 1.8mm, and the cable core outside cladding has the compound interior winding layer of iron powder polyethylene resin, the total shielding layer of copper wire winding, the compound outer winding layer of iron powder polyethylene resin and silane grafting crosslinking high density polyethylene oversheath in proper order. The cable has different outer diameters of the wire cores and balanced cable core structure, reduces stress concentration, reduces the occurrence of core breaking and wire breaking, and ensures the safety and reliability of the cable work.

Description

Core-breaking-preventing type small-diameter multi-core shielded cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a prevent disconnected core type thin footpath multicore shielded cable.

Background

In an automated industrial production line, a multi-core cable is often used for a robot, a mobile drive system, and the like. Due to the rapid development of transmission technology, maintenance testing technology and the like, the multi-core cable gradually moves to the development of light weight and light weight, and the multi-core cable brings a great deal of benefits of convenience in transportation, low manufacturing cost, economy, practicality, low efficiency and the like for industrial technology. Some shielded multi-core cables have low-voltage differential signal wire cores arranged in pairs to transmit differential signals, however, power wire cores, differential signal wire cores and control wire cores twisted inside cable cores of such cables are approximately equal in diameter, and although the cable twisting structure is balanced, the cable is not beneficial to fine diameter preparation, poor in bending resistance, easy to break cores and break wires, unstable in signal transmission characteristics, and further influences the electrical characteristics of the cables and normal production order.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a prevent disconnected core type thin footpath multicore shielded cable, and each sinle silk external diameter is different and compromise the cable core structure equilibrium, reduces stress concentration, reduces disconnected core outage and takes place, and signal transmission characteristic is stable, guarantees the fail safe nature of cable work.

The utility model discloses a make above-mentioned technical problem solve through following technical scheme.

Prevent disconnected core type small diameter multicore shielding cable, constitute the cable core including power sinle silk, video sinle silk, two difference signal sinle silks and control sinle silk and the tensile fibre core of counterpoint type wholly aromatic copolyamide transposition jointly, the control sinle silk external diameter is greater than power sinle silk external diameter just is less than video sinle silk external diameter, difference signal sinle silk external diameter is less than power sinle silk external diameter, two difference signal sinle silks constitute a set of difference signal sinle silk group and pass through video sinle silk with the control sinle silk with power sinle silk keeps interval arrangement, difference signal sinle silk external diameter is 1.2mm to 1.8mm, the outside cladding of cable core has iron powder polyethylene resin complex inner winding layer, copper wire winding total shielding layer, iron powder polyethylene resin complex outer winding layer and silane grafting crosslinking high density polyethylene oversheath in proper order.

Preferably, the control wire core outer diameter is 85% to 95% of the video wire core outer diameter.

Preferably, the power wire core outer diameter is 55% to 65% of the control wire core outer diameter.

Preferably, the differential signal core outer diameter is 60% to 80% of the power core outer diameter.

Preferably, the power wire core comprises a power conductor and a silane grafted and crosslinked linear low-density polyethylene insulating layer, and insulating lubricating grease is filled between the power conductor and the silane grafted and crosslinked linear low-density polyethylene insulating layer.

Preferably, the video cable core comprises a video conductor and a fluororesin extruded outer insulating layer, a copper wire wrapped inner shielding layer, a copper wire wrapped outer shielding layer and a polyurethane sheath layer which are sequentially coated outside the video conductor.

Preferably, the differential signal wire core comprises an inner conductor, and an XLPE insulating layer, a shielding mesh conductor layer and a PET resin extrusion layer which are sequentially coated outside the inner conductor.

Preferably, the control wire core comprises three insulating twisted-pair wire cores which are twisted together to form a wire core body, the wire core body is sequentially wrapped with a polyester fiber plain weave wrapping layer, a copper wire winding sub-shielding layer and a foamed polyvinyl chloride sheath layer, the insulating twisted-pair wire core is formed by twisting two insulating wire cores in pairs, each insulating wire core comprises a central conductor and a polyvinyl chloride insulating layer, and insulating lubricating silicone grease is filled in a gap between the central conductor and the polyvinyl chloride insulating layer.

Preferably, the total shielding layer for copper wire winding is formed by mixing and spirally winding two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9-1, and the shielding density is 90-95%.

The utility model has the advantages that:

1. the power wire cores, the video wire cores, the differential signal wire cores and the control wire cores with different outer diameters are reasonably designed to be twisted with the para-type wholly aromatic copolyamide tensile fiber core material to form a cable core, the outer diameters of the wire cores in the cable core are different, the tensile stress is favorably dispersed on the wire cores in the bending and twisting process of the cable, the stress concentration is effectively reduced, the torque force is reduced, the occurrence of wire breakage and core breakage is prevented, the tensile elastic modulus of the para-type wholly aromatic copolyamide tensile fiber core material is large, the cable can better bear lateral pressure in bending, the cable has high flexibility, the bending resistance is improved, the stable electrical property of the cable is maintained, safety and reliability are realized, and the durability is better.

2. The cable core is outside through the compound interior winding layer of iron powder polyethylene resin, the total shielding layer of copper wire winding and the compound outer winding layer of iron powder polyethylene resin form the shielding conductor jointly, the signal attenuation that has significantly reduced, reinforce shielding performance, improve anti-interference ability, the iron powder polyethylene resin composite band is around the package at the total shielding layer of copper wire winding ectonexine, effectually prevent that the total shielding layer of copper wire winding tinned copper wire easily takes place loose problem when crooked, help preventing that the broken string from taking place, guarantee the stability of shielding characteristic, ensure the fail safe nature of cable work.

Drawings

Fig. 1 is a schematic sectional structure diagram of an embodiment of the present invention.

In the figure: 1-power wire core, 11-power conductor, 12-silane grafted crosslinked linear low density polyethylene insulating layer, 2-video wire core, 21-video conductor, 22-fluororesin extruded outer insulating layer, 23-copper wire wrapped inner shielding layer, 24-copper wire wrapped outer shielding layer, 25-polyurethane sheathing layer, 3-differential signal wire core, 31-inner conductor, 32-XLPE insulating layer, 33-shielding mesh conductor layer, 34-PET resin extruded layer, 4-control wire core, 41-insulating twisted-pair wire core, 42-polyester fiber plain weave wrapping layer, 43-copper wire wound partial shielding layer, 44-polyvinyl chloride foamed polyethylene sheathing layer, 45-center conductor, 46-polyvinyl chloride insulating layer, 5-para-type aromatic copolyamide drawn fiber core material, the composite shielding layer comprises a 6-iron powder polyethylene resin composite inner winding layer, a 7-copper wire winding total shielding layer, an 8-iron powder polyethylene resin composite outer winding layer and a 9-silane grafted cross-linked high-density polyethylene outer sheath.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1, the utility model discloses prevent disconnected core type small diameter multicore shielded cable of embodiment, including power sinle silk 1, video sinle silk 2, two differential signal sinle silks 3 and control sinle silk 4 and counterpoint type wholly aromatic copolyamide tensile fiber core 5 transposition constitution cable core jointly. The outer diameter of the control wire core 4 is larger than the outer diameter of the power wire core 1 and smaller than the outer diameter of the video wire core 2, the outer diameter of the differential signal wire core 3 is smaller than the outer diameter of the power wire core 1, specifically, the outer diameter of the control wire core 4 is 85% to 95% of the outer diameter of the video wire core 2, the outer diameter of the power wire core 1 is 55% to 65% of the outer diameter of the control wire core 4, and the outer diameter of the differential signal wire core 3 is 60% to 80% of the outer diameter of the power wire core 1. Two differential signal sinle silks 3 constitute a set of differential signal sinle silk group and pass through video sinle silk 2 with control sinle silk 4 with power sinle silk 1 keeps the interval arrangement, differential signal sinle silk 3 external diameter is 1.2mm to 1.8 mm. In one embodiment, the power wire core 1 comprises a power conductor 11 and a silane-grafted cross-linked linear low density polyethylene insulation layer 12, and an insulating lubricating grease is filled between the power conductor 11 and the silane-grafted cross-linked linear low density polyethylene insulation layer 12. In one embodiment, the video cable core 2 comprises a video conductor 21, and a fluororesin extruded outer insulating layer 22, a copper wire wrapped inner shielding layer 23, a copper wire wrapped outer shielding layer 24 and a polyurethane sheath layer 25 which are sequentially coated outside the video conductor 21. In one embodiment, the differential signal core 3 includes an inner conductor 31, and an XLPE insulating layer 32, a shielding mesh conductor layer 33, and a PET resin extrusion layer 34 sequentially coated outside the inner conductor 31. In one embodiment, the control wire core 4 includes three insulation twisted pair wire cores 41 twisted together to form a wire core body, the wire core body is sequentially covered with a polyester fiber plain weave wrapping layer 42, a copper wire winding sub-shielding layer 43 and a foamed polyvinyl chloride sheath layer 44, the insulation twisted pair wire core 41 is formed by twisting two insulation wire cores in pair, the insulation wire core includes a central conductor 45 and a polyvinyl chloride insulation layer 46, and an insulation lubricating silicone grease is filled in a gap between the central conductor 45 and the polyvinyl chloride insulation layer 46.

And an iron powder polyethylene resin composite inner winding layer 6, a copper wire winding total shielding layer 7, an iron powder polyethylene resin composite outer winding layer 8 and a silane grafted cross-linked high-density polyethylene outer sheath 9 are sequentially coated outside the cable core. In one embodiment, the copper wire winding total shielding layer 7 is formed by mixed unidirectional spiral winding of two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9-1, and the shielding density is 90-95%.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. Prevent disconnected core type thin footpath multicore shielded cable, characterized by: the cable comprises a power cable core (1), a video cable core (2), two differential signal cable cores (3) and a control cable core (4) which are jointly twisted with a para-type wholly aromatic copolyamide tensile fiber core (5) to form a cable core, wherein the outer diameter of the control cable core (4) is larger than the outer diameter of the power cable core (1) and smaller than the outer diameter of the video cable core (2), the outer diameter of the differential signal cable core (3) is smaller than the outer diameter of the power cable core (1), the two differential signal cable cores (3) form a group of differential signal cable cores and pass through the video cable core (2) and the control cable core (4) and the power cable core (1) are kept at intervals, the outer diameter of the differential signal cable core (3) is 1.2mm to 1.8mm, and the cable core is sequentially wrapped with an iron powder polyethylene resin composite inner winding layer (6), a copper wire winding total shielding layer (7), an iron powder polyethylene resin composite outer winding layer (8) and a silane grafted crosslinked high-density polyethylene outer sheath (2: (1) 9).

2. The breakage-preventing type small-diameter multi-core shielded cable according to claim 1, wherein: the outer diameter of the control wire core (4) is 85% -95% of the outer diameter of the video wire core (2).

3. The breakage-preventing type small-diameter multi-core shielded cable according to claim 1, wherein: the outer diameter of the power wire core (1) is 55-65% of the outer diameter of the control wire core (4).

4. The breakage-preventing type small-diameter multi-core shielded cable according to claim 1, wherein: the outer diameter of the differential signal wire core (3) is 60% -80% of the outer diameter of the power wire core (1).

5. The breakage-preventing type small-diameter multi-core shielded cable according to claim 1, wherein: the power wire core (1) comprises a power conductor (11) and a silane grafted and crosslinked linear low-density polyethylene insulating layer (12), and insulating lubricating grease is filled between the power conductor (11) and the silane grafted and crosslinked linear low-density polyethylene insulating layer (12).

6. The breakage-preventing type small-diameter multi-core shielded cable according to claim 1, wherein: video sinle silk (2) include video conductor (21) and in proper order the cladding be in crowded package outer insulating layer (22) of fluororesin of video conductor (21) outside, copper wire are around package inner shield layer (23), copper wire are around package outer shield layer (24) and polyurethane restrictive coating (25).

7. The breakage-preventing type small-diameter multi-core shielded cable according to claim 1, wherein: the differential signal wire core (3) comprises an inner conductor (31) and an XLPE insulating layer (32), a shielding mesh conductor layer (33) and a PET resin extrusion coating layer (34) which are sequentially coated outside the inner conductor (31).

8. The breakage-preventing type small-diameter multi-core shielded cable according to claim 1, wherein: the control sinle silk (4) include that three insulating pair twist sinle silk (41) twist jointly forms the line core, the outside cladding in proper order of line core has polyester fiber plain weave around covering (42), copper wire winding branch shielding layer (43) and foaming polyvinyl chloride restrictive coating (44), insulating pair twist sinle silk (41) comprise two insulating sinle silk pair twists, the insulating sinle silk includes central conductor (45) and polyvinyl chloride insulating layer (46), central conductor (45) with clearance packing has insulating lubricated silicone grease between polyvinyl chloride insulating layer (46).

9. The breakage-preventing type small-diameter multi-core shielded cable according to claim 1, wherein: the copper wire winding total shielding layer (7) is formed by mixing and spirally winding two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9-1, and the shielding density is 90-95%.