CN217181892U

CN217181892U - Thin-diameter light-weight multi-core shielding control cable

Info

Publication number: CN217181892U
Application number: CN202220332434.1U
Authority: CN
Inventors: 邱金波; 王超; 姚汪宁; 黄桂领; 王洪超
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: 2022-08-12
Anticipated expiration: 2032-02-14

Abstract

The utility model discloses a thin footpath light multicore shielding control cable, including path power sinle silk, big footpath power sinle silk, four difference signal sinle silks and control core constitute the cable core around the transposition type whole aromatic group copolyamide tensile fiber core common transposition, big footpath power sinle silk external diameter is greater than path power sinle silk external diameter and is less than difference signal sinle silk external diameter, difference signal sinle silk external diameter is less than control sinle silk external diameter, four difference signal sinle silks constitute two sets of difference signal sinle silk groups and arrange through path power sinle silk interval between two sets of, difference signal sinle silk external diameter is 0.3mm to 1mm, the cable core outside cladding has the PET resin area in proper order around the covering, conductive fiber twines total shielding layer and silane grafting crosslinking high density polyethylene oversheath. The control cable realizes the preparation of thin diameter and light weight, has balanced cable core structure, better bending resistance, stable signal transmission characteristic and ensures the safe reliability of the cable work, and reduces the occurrence of core breaking and wire breaking.

Description

Thin-diameter light-weight multi-core shielding control cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a thin and light multicore shielding control cable of footpath.

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 thin footpath lightweight multicore shielding control cable, and it is required to realize thin footpath light lightweight preparation, compromises the cable core structure equilibrium, and bending resistance can be better, 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.

The small-diameter light-weight multi-core shielding control cable comprises a small-diameter power wire core, a large-diameter power wire core, four differential signal wire cores and a control wire core, wherein the small-diameter power wire core, the large-diameter power wire core, the four differential signal wire cores and the control wire core are jointly stranded around a para-type wholly aromatic copolyamide tensile fiber core to form a cable core, the outer diameter of the large-diameter power wire core is larger than the outer diameter of the small-diameter power wire core and smaller than the outer diameter of the differential signal wire core, the outer diameter of the differential signal wire core is smaller than the outer diameter of the control wire core, the four differential signal wire cores form two groups of differential signal wire core groups, the two groups of differential signal wire cores are arranged at intervals through the small-diameter power wire core, the outer diameter of the differential signal wire core is 0.3mm to 1mm, and a PET resin tape wrapping layer, a conductive fiber winding total shielding layer and a silane grafted crosslinked high-density polyethylene outer sheath are sequentially wrapped outside the cable core.

Preferably, the outer diameter of the large-diameter power wire core is 70% to 90% of the outer diameter of the differential signal wire core.

Preferably, the outer diameter of the small-diameter power wire core is 50% to 70% of the outer diameter of the large-diameter power wire core.

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

Preferably, the small-diameter power wire core and the large-diameter power wire core both comprise a power conductor and a PFA insulating layer, and insulating lubricating grease is filled between the power conductor and the PFA insulating layer.

Preferably, the differential signal wire core comprises an inner conductor, and a fluororesin extruded insulation layer, a conductive fiber wound sub-shielding layer and an ETFE wrapped layer which are sequentially wrapped outside the inner conductor.

Preferably, the conductive fiber winding sub-shielding layer is a conductive fiber bundle spiral winding structure, and the conductive fiber bundle is formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating a copper conductive coating.

Preferably, the control core comprises two insulating cores and two coaxial cores, the two insulating cores and the two coaxial cores are twisted together around a PP resin core to form a core body, and the outside of the core body is sequentially coated with an iron powder polypropylene resin composite winding layer and a fluororesin sheath layer.

Preferably, the PET resin tape wrapping layer is a PET resin tape one-way spiral lapping and covering wrapping structure.

Preferably, the conductive fiber winding total shielding layer is a cylindrical supporting net body formed by lapping and weaving double-layer aramid fiber twisted wires in a reverse spiral mode, a plurality of conductive fiber stranded wires are uniformly distributed on the supporting net body in the circumferential direction, and the conductive fiber stranded wires are formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings.

The utility model has the advantages that:

1. the power 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 cable core is beneficial to dispersing tensile stress on each wire core in the bending and twisting process of the cable, stress concentration is effectively reduced, 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 characteristics of the cable are maintained, the safety and reliability are realized, and the durability is better.

2. The interlayer shielding is formed by winding the main shielding layer by the conductive fibers and winding the sub-shielding layers by the conductive fibers, so that the signal crosstalk phenomenon is greatly weakened, the anti-interference capability is improved, the transmission rate and the signal transmission stability of differential signals are ensured, the leakage of internal signals or noise to the outside and the interference from external signals are effectively inhibited, the stable electrical characteristics of the cable are powerfully ensured, the shielding layers made of metal materials are replaced, the weight is reduced, the cost is reduced, and the thin and light production is realized.

3. The conductive fiber winding total shielding layer is formed by weaving double-layer aramid twisted yarns to form a cylindrical supporting net body, has high strength and high modulus, enables the flexibility of a cable to be better, is formed by laying conductive fiber stranded wires on the supporting net body, is formed by stranding polyacrylonitrile-based carbon fibers and coating copper conductive coatings, can effectively replace metal material shielding layers, and ensures stable shielding performance.

Drawings

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

In the figure: 1-small-diameter power wire core, 2-large-diameter power wire core, 3-differential signal wire core, 31-inner conductor, 32-fluororesin extruded insulation layer, 33-conductive fiber wound partial shielding layer, 34-ETFE wound covering layer, 4-control wire core, 41-insulation wire core, 42-coaxial wire core, 43-PP resin core material, 44-iron powder polypropylene resin composite wound layer, 45-fluororesin sheath layer, 5-para-type wholly aromatic copolyamide drawn fiber core material, 6-PET resin tape wound covering layer, 7-conductive fiber wound total shielding layer, 8-silane grafted crosslinked high-density polyethylene outer sheath, 9-power conductor and 10-PFA insulation layer.

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 provides a thin and light multicore shielding control cable of footpath, including path power sinle silk 1, big footpath power sinle silk 2, four difference signal sinle silks 3 and control sinle silk 4 around counterpoint type wholly aromatic copolyamide tensile fiber core 5 transposition constitution cable core jointly. The outer diameter of the large-diameter power wire core 2 is larger than the outer diameter of the small-diameter power wire core 1 and smaller than the outer diameter of the differential signal wire core 3, the outer diameter of the differential signal wire core 3 is smaller than the outer diameter of the control wire core 4, further, the outer diameter of the large-diameter power wire core 2 is 70% -90% of the outer diameter of the differential signal wire core 3, the outer diameter of the small-diameter power wire core 1 is 50% -70% of the outer diameter of the large-diameter power wire core 2, and the outer diameter of the differential signal wire core 3 is 60% -80% of the outer diameter of the control wire core 4. The four differential signal wire cores 3 form two groups of differential signal wire core groups, the two groups of differential signal wire cores are arranged at intervals through the small-diameter power wire core 1, and the outer diameter of each differential signal wire core 3 is 0.3 mm-1 mm. Specifically, the small-diameter power wire core 1 and the large-diameter power wire core 2 both comprise a power conductor 9 and a PFA insulating layer 10, and insulating lubricating grease is filled between the power conductor 9 and the PFA insulating layer 10. Differential signal sinle silk 3 includes inner conductor 31 and cladding in proper order the outside fluororesin crowded package insulating layer 32 of inner conductor 31, conductive fiber winding branch shielding layer 33 and ETFE are around covering 34, and is further, conductive fiber winding branch shielding layer 33 is conductive fiber bundle spiral winding structure, conductive fiber bundle is a plurality of polyacrylonitrile base carbon fiber transposition and coats copper conductive coating and form. The control core 4 comprises two insulation cores 41 and two coaxial cores 42 which are jointly twisted around a PP resin core 43 to form a core body, and the core body is sequentially coated with an iron powder polypropylene resin composite winding layer 44 and a fluororesin sheath layer 45.

The cable core is coated with a PET resin tape wrapping layer 6, a conductive fiber winding total shielding layer 7 and a silane grafted cross-linked high-density polyethylene outer sheath 8 in sequence. In one embodiment, the PET resin tape wrapping layer 6 is a unidirectional spiral lapping and wrapping structure of a PET resin tape. In one embodiment, the conductive fiber wound total shielding layer 7 is formed by weaving double-layer aramid twisted wires in a reverse spiral winding manner, so as to form a cylindrical supporting net body, a plurality of conductive fiber stranded wires are uniformly distributed on the supporting net body in the circumferential direction, and the conductive fiber stranded wires are formed by twisting a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings.

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. Thin-diameter light-weight multi-core shielding control cable is characterized in that: comprises a small-diameter power wire core (1), a large-diameter power wire core (2), four differential signal wire cores (3) and a control wire core (4) which are jointly twisted around a para-type wholly aromatic copolyamide drawn fiber core material (5) to form a cable core, the outer diameter of the large-diameter power wire core (2) is larger than that of the small-diameter power wire core (1) and smaller than that of the differential signal wire core (3), the outer diameter of the differential signal wire core (3) is smaller than that of the control wire core (4), the four differential signal wire cores (3) form two groups of differential signal wire core groups, the two groups are arranged at intervals through the small-diameter power wire core (1), the differential signal sinle silk (3) external diameter is 0.3mm to 1mm, the cable core outside cladding has PET resin tape around covering (6), conductive fiber winding total shielding layer (7) and silane grafting crosslinking high density polyethylene oversheath (8) in proper order.

2. The small-diameter light-weight multi-core shielding control cable according to claim 1, wherein: the outer diameter of the large-diameter power wire core (2) is 70% -90% of the outer diameter of the differential signal wire core (3).

3. The small-diameter light-weight multi-core shielding control cable according to claim 1, wherein: the outer diameter of the small-diameter power wire core (1) is 50% -70% of the outer diameter of the large-diameter power wire core (2).

4. The small-diameter light-weight multi-core shielding control 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 control wire core (4).

5. The small-diameter light-weight multi-core shielding control cable according to claim 1, wherein: the small-diameter power wire core (1) and the large-diameter power wire core (2) both comprise a power conductor (9) and a PFA insulating layer (10), and insulating lubricating grease is filled between the power conductor (9) and the PFA insulating layer (10).

6. The small-diameter light-weight multi-core shielding control cable according to claim 1, wherein: the differential signal wire core (3) comprises an inner conductor (31) and a fluororesin extruded insulating layer (32), a conductive fiber winding sub-shielding layer (33) and an ETFE winding layer (34) which are sequentially coated outside the inner conductor (31).

7. The small-diameter light-weight multi-core shielding control cable as claimed in claim 6, wherein: the conductive fiber winding sub-shielding layer (33) is of a conductive fiber bundle spiral winding structure, and the conductive fiber bundle is formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating a copper conductive coating.

8. The small-diameter light-weight multi-core shielding control cable according to claim 1, wherein: the control sinle silk (4) include two insulation sinle silks (41) and two coaxial sinle silks (42) around PP resin core (43) twist formation line core jointly, the outside cladding in proper order of line core has compound winding layer of iron powder polypropylene resin (44) and fluororesin restrictive coating (45).

9. The small-diameter light-weight multi-core shielding control cable according to claim 1, wherein: the PET resin belt wrapping layer (6) is of a PET resin belt one-way spiral lapping cover wrapping structure.

10. The small-diameter light-weight multi-core shielding control cable according to claim 1, wherein: the total shielding layer (7) for the conductive fiber winding is a cylindrical supporting net body formed by lapping and weaving double-layer aramid twisted wires in a reverse spiral mode, a plurality of conductive fiber stranded wires are uniformly distributed in the circumferential direction on the supporting net body, and the conductive fiber stranded wires are formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings.