Flexible combination cable for mobile system

Abstract

The utility model discloses a flexible combination cable for a mobile system, which comprises two signal core wires and two control core wires, the signal core wires and the control core wires are twisted into a cable, the center and the outer side of the cable are filled with filling ropes, the signal core wires and the control core wires of the cable are wrapped by a wrapping tape, and a sheath is extruded on the wrapping tape; each signal core wire comprises a signal conductor, the signal conductor is formed by twisting a plurality of Category 6 + copper wires of phi 0.05 mm, a signal insulating layer is extruded on the signal conductor, a winding shielding layer is wound on the signal insulating layer, and the winding directions of the winding shielding layers in the two signal units are opposite; the control core wire comprises a control conductor, the control conductor is formed by twisting a plurality of Category 6 + copper wires of phi 0.05 mm, and a control insulating layer is extruded on the control conductor; the twisting direction of the signal conductors, the twisting direction of the control conductors and the twisting direction during cabling are consistent. The flexible cable is not only good in flexibility, but also excellent in electrical performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to the cable field especially relates to a flexible combination cable for mobile system. BACKGROUND

[0002] With the rapid development of industrial automation, intelligent logistics and mobile robot technology, the flexibility performance requirement of cable for mobile system (such as AGV trolley, collaborative robot, track detection platform etc.) is increasingly stringent. There are strong electromagnetic interference sources such as frequency converter and motor in industrial field, and the traditional combination cable is insufficient in layered shielding (such as only single layer aluminum foil), resulting in unstable signal transmission. The ordinary PVC insulated cable has low insulation performance, and needs to extrude thick insulation layer to ensure the insulation performance, and the thick insulation means larger outer diameter and heavier weight, and the flexibility is insufficient. Although the PVC sheath flexible cable can be applied to the bending mobile place, the limitation is relatively large, that is, it is applied to the place where the wiring needs to be bent to play a static bending role, or only the directional bending role in horizontal or vertical direction can be met, and it cannot be applied to the system which needs to be frequently bent up and down, left and right or periodically rotated, and the average service life is only 820,000 times. SUMMARY

[0003] The utility model aims at providing a flexible combination cable for mobile system, which has good flexibility and bending property and excellent electrical performance.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a flexible combination cable for mobile system, comprising two signal core wires and two control core wires, the outer diameter of the signal core wire is consistent with the outer diameter of the control core wire, the signal core wire and the control core wire are twisted into a cable, the center and the outer side of the cable are filled with a filling rope, the signal core wire and the control core wire of the cable are wrapped with a tape, and the tape is extruded with a sheath.

[0005] The signal core wire comprises a signal conductor, the signal conductor is twisted by a plurality of φ0.05mm super six category copper wires, a signal insulation layer is extruded on the signal conductor, a winding shielding layer is wound on the signal insulation layer, and the winding directions of the winding shielding layers in the two signal units are opposite.

[0006] The control core wire comprises a control conductor, the control conductor is twisted by a plurality of φ0.05mm super six category copper wires, and a control insulation layer is extruded on the control conductor.

[0007] The twisting directions of the signal conductor and the control conductor and the twisting direction when the cable is formed are consistent.

[0008] Further, the aforementioned flexible combined cable for mobile system, wherein the signal conductor is divided into three strands of twisted wires with a diameter of 0.05mm, and then twisted into a signal conductor, the twisted direction of the twisted wires in the signal conductor is consistent with the twisted direction of the signal conductor; the control conductor is divided into seven strands of twisted wires with a diameter of 0.05mm, and then twisted into a control conductor with a 1+6 structure, the twisted direction of the twisted wires in the control conductor is consistent with the twisted direction of the control conductor.

[0009] Further, the aforementioned flexible combined cable for mobile system, wherein the twisted pitch ratio of the twisted wires in the signal conductor and the control conductor is 16-25 times, and the twisted pitch ratio of the signal conductor and the control conductor is 6-10 times.

[0010] Further, the aforementioned flexible combined cable for mobile system, wherein the wrapping shielding layer is wrapped by a tin-plated wire with a diameter of 0.1mm, and the wrapping density is 100%.

[0011] Further, the aforementioned flexible combined cable for mobile system, wherein the filling rope is aramid filament.

[0012] Further, the aforementioned flexible combined cable for mobile system, wherein the wrapping tape is PTFE wrapping tape.

[0013] Further, the aforementioned flexible combined cable for mobile system, wherein the sheath is made of modified TPU material.

[0014] Further, the aforementioned flexible combined cable for mobile system, wherein the signal insulation layer and the control insulation layer are both made of TPEE material, the concentricity between the signal insulation layer and the signal conductor is ≤1.1%, and the concentricity between the control insulation layer and the control conductor is ≤1.1%.

[0015] The utility model discloses a advantage lies in: the outer diameter of signal core wire and the outer diameter control core wire control consistent, can make the roundness of cable reach 95%, make the stress of cable more uniform in the movement process, thereby prolong the service life, the two signal core wire all has the winding shielding layer of winding, and the winding direction of two winding shielding layers is opposite, can improve the shielding efficiency, reduce the cross talk, improve transmission signal quality, can also make the electromagnetic field between two signal core wire self -neutralization, the cross talk value of actual measurement reduces 15% than the winding shielding layer of conventional same direction winding, the twisting direction of signal conductor, the twisting direction of control conductor and the twisting direction when cable making all keep consistent, can make the bending stress distribution of super six kinds copper wire in signal conductor and control conductor even, can reduce 25% local strain through ANSYS simulation verification, thereby the dynamic requirement of cable is promoted to 5000000 times or more, when cable making, through the cooperation of the wrapping tape of PTFE material and the sheath of modified PUR material, can make the chemical corrosion resistance level of cable reach ASTM D543 standard Level4. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structural diagram of a kind of flexible combination cable for mobile system described in the utility model. DETAILED DESCRIPTION

[0017] The technical scheme described in the utility model is further described below in conjunction with the drawings and preferred embodiments.

[0018] As Figure 1 Indicated, a kind of flexible combination cable for mobile system described in the utility model, including: two signal core wire 1 and two control core wire 2, the outer diameter of signal core wire 1 is consistent with the outer diameter of control core wire 2, signal core wire 1 and control core wire 2 are twisted into cable, the outer diameter of signal core wire 1 and control core wire 2 is designed into uniform outer diameter, when cable making, it can guarantee the roundness of cable reaches 95%, the stress of cable is more uniform in the movement process, thereby prolong the service life, the center and outside of cable making are filled with filling rope 3 made of aramid filament, filling rope 3 plays the role of stabilizing cable internal cable core and strengthening product strength, so that the breaking force of cable is ≥2000N, the wrapping tape 4 is wrapped on the signal core wire 1 and control core wire 2 of cable making, and the wrapping tape 4 is PTFE wrapping tape, the sheath 5 is extruded on the wrapping tape 4, and the sheath 5 is made of modified TPU material, and the modified TPU not only retains the original excellent performance, such as good mechanical strength, wear resistance, oil resistance, low temperature resistance and the like, but also significantly improves flexibility and elasticity, so that cable can be more suitable for application scenarios requiring high flexibility and elasticity, the wrapping tape 4 made of PTFE material and the sheath 5 made of modified PUR material cooperate, can make the chemical corrosion resistance level of cable reach ASTM D543 standard Level4.

[0019] The signal core wire 1 comprises a signal conductor 11, the signal conductor 11 is divided into three strands of twisted wires by 129 φ0.05 mm super six category copper wires, and then twisted into three strands of twisted wires, which helps to reduce the skin effect and proximity effect inside the signal core wire 1, thereby reducing the resistance and improving the transmission efficiency, the twisting direction of the twisted wires in the signal conductor 11 is consistent with the twisting direction of the signal conductor 11, and the twisting direction of the twisted wires is consistent with the twisting direction of the signal conductor 11, which can ensure the softness of the signal core wire 1, uniform stress in the later use process, prevent damage caused by uneven stress, the twisting pitch ratio of the twisted wires in the signal conductor 11 is 16-25 times, the twisting pitch ratio of the signal conductor 11 is 6-10 times, which further improves the softness of the signal core wire 1, the signal conductor 11 is extruded with a signal insulating layer 12, the signal insulating layer 12 is made of TPEE material, the concentricity between the signal insulating layer 12 and the signal conductor 11 is ≤1.1%, high concentricity can ensure that the signal core wire 1 has better electrical performance, the TPEE material has high mechanical properties, the tensile strength is greater than 45MP, can withstand larger mechanical stress without easy breaking, also has excellent wear resistance, so that the cable can prolong the service life in the later operation, the dielectric strength of the TPEE material is high, the insulation resistance is greater than 200Ω·kM, which effectively prevents breakdown and ensures the safety of high-voltage environment, reduces energy loss and improves signal transmission quality, reduces the problem of electromagnetic interference in the cable line, the signal insulating layer 12 is wound with a winding shielding layer 13, the winding shielding layer 13 is wound by φ0.1 mm tinned wire, the winding density is 100%, the winding shielding layer 13 makes the signal core wire 1 have better softness, and the 100% winding density can ensure the stability of signal transmission, the winding directions of the winding shielding layers 13 in the two signal core wires 1 are opposite, the winding shielding layers 13 on the two signal core wires 1 are reversely wound to realize electromagnetic field self-cancellation, the actual measured crosstalk value of the winding shielding layer is reduced by 15% compared with the conventional same direction winding, and the outer diameter of the signal core wire 1 after winding the winding shielding layer 13 is consistent with the outer diameter of the control core wire 2.

[0020] The control core 2 comprises a control conductor 21, the control conductor 21 is divided into seven strands of twisted bundle wires by 259 φ0.05mm super six category copper wires first, and then the seven strands of twisted bundle wires are twisted into a 1+6 type structure, which not only ensures the roundness of the control core 2, but also reduces the skin effect, and the current impedance is lower than that of the traditional twisting mode, the twisting direction of the twisted bundle wires in the control conductor 21 is consistent with the twisting direction of the control conductor 21, the twisting direction of the twisted bundle wires and the control conductor 211 is consistent, which can ensure the softness of the control core 2, and the stress is uniform in the later use process, so as to prevent damage caused by uneven stress, the twisting pitch ratio of the twisted bundle wires in the control conductor 21 is 16-25 times, the twisting pitch ratio of the control conductor 21 is 6-10 times, and the softness of the control core 2 is further improved, the control conductor 21 is extruded and covered with a control insulation layer 22, the control insulation layer 22 is made of TPEE material, the concentricity between the control insulation layer 22 and the control conductor 21 is ≤1.1%, the high concentricity can ensure that the control core 2 has better electrical performance, the TPEE material has high mechanical performance, the tensile strength is greater than 45MP, can withstand larger mechanical stress without easy breaking, also has excellent wear resistance, so that the cable prolongs the service life in the later operation, the dielectric strength of the TPEE material is high, the insulation resistance is greater than 200Ω·kM, effectively prevents breakdown, ensures the safety of the high-voltage environment, reduces energy loss, improves signal transmission quality, and reduces the problem of electromagnetic interference in the cable line.

[0021] The twisting direction of the signal conductor 11, the twisting direction of the control conductor 21 and the twisting direction during cabling are consistent, the same direction twisting design makes the bending stress distribution of the super six category copper wires in the signal conductor 11 and the control conductor 21 uniform, and ANSYS simulation verification can reduce 25% of local strain, so as to improve the dynamic requirement of the cable to 5 million times.

[0022] Finally, it should be noted that: the above examples are only used to illustrate the technical scheme of the utility model and not to limit it, although the utility model has been described in detail with reference to the above examples, those skilled in the art should understand that: the specific implementation of the utility model can be modified or replaced, and any modification or equivalent replacement without departing from the spirit and scope of the utility model should be covered in the protection scope of the claims of the utility model.

Claims

1. A flexible combined cable for mobile systems, characterized by: The cable comprises two signal core wires and two control core wires, the outer diameter of the signal core wire is consistent with that of the control core wire, the signal core wire and the control core wire are twisted into a cable, a filling rope is filled in the center and the outer side of the cable, a tape is wrapped on the signal core wire and the control core wire of the cable, and a sheath is extruded on the tape. The signal core wire comprises a signal conductor twisted by a plurality of φ0.05 mm super six category copper wires, a signal insulating layer extruded on the signal conductor, and a wrapping shielding layer wound on the signal insulating layer, the wrapping directions of the wrapping shielding layers in the two signal units are opposite. The control core wire comprises a control conductor twisted by a plurality of φ0.05 mm super six category copper wires, and a control insulating layer extruded on the control conductor. The twisting directions of the signal conductor and the control conductor and the twisting direction when the cable is twisted are consistent. The signal conductor is twisted by 129 φ0.05 mm super six category copper wires into three twisted bundles of wires, and the signal conductor is twisted by the three twisted bundles of wires, the twisting direction of the twisted bundle of wires in the signal conductor is consistent with the twisting direction of the signal conductor; the control conductor is twisted by 259 φ0.05 mm super six category copper wires into seven twisted bundles of wires, and the control conductor is twisted by the seven twisted bundles of wires into a 1+6 structure, the twisting direction of the twisted bundle of wires in the control conductor is consistent with the twisting direction of the control conductor.

2. The flexible combined cable for a moving system according to claim 1, characterized in that: The twisting pitch ratio of the twisted bundles of wires in the signal conductor and the control conductor is 16-25 times, and the twisting pitch ratio of the signal conductor and the control conductor is 6-10 times.

3. A flexible combined cable for a mobile system according to claim 2, characterized in that: The wrapping shielding layer is twisted by φ0.1 mm tinned wire, and the wrapping density is 100%.

4. The flexible assembly cable for a moving system according to claim 1, characterized by: The filling rope is aramid filament.

5. The flexible assembly cable of claim 1, wherein: The tape is PTFE tape.

6. The flexible assembly cable of claim 1, wherein: The sheath is made of modified TPU material.

7. The flexible assembly cable of claim 1, wherein: The signal insulating layer and the control insulating layer are both made of TPEE material, the concentricity between the signal insulating layer and the signal conductor is ≤1.1%, and the concentricity between the control insulating layer and the control conductor is ≤1.1%.

8. The flexible assembly cable for a mobile system according to claim 1, characterized in that: ​

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