CN210956212U

CN210956212U - Super-flexible torsion-resistant cable for robot arm

Info

Publication number: CN210956212U
Application number: CN201922367622.9U
Authority: CN
Inventors: 朱小梅
Original assignee: United Electric Wire Kunshan Co ltd
Current assignee: United Electric Wire Kunshan Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-07-07
Anticipated expiration: 2029-12-25

Abstract

The utility model relates to a super flexible is able to bear or endure to turn round cable for robot arm, its cross section includes the conducting layer from inside to outside in proper order, the shielding layer of cladding in the conducting layer periphery, the conducting layer including the even number root heart yearn that the transposition set up mutually, the aluminium foil layer of parcel in even number root heart yearn periphery, the heart yearn comprises center conductor and the insulating layer of cladding in the periphery, the shielding layer includes weaving band layer and the sheath of cladding in the conducting layer periphery, center conductor is twisted mutually by a plurality of strands of hyperfine tin copper alloy silk and an at least kevlar fibre and forms, the insulating layer is made by the crosslinked PE material, the sheath is made by the wear-resisting PVC material of. The utility model discloses the cable has ultrahigh tensile strength ability, ultrahigh flexibility and wearability, on being adapted to robot arm very much, has great practicality.

Description

Super-flexible torsion-resistant cable for robot arm

Technical Field

The utility model relates to a cable especially relates to a flexible cable for on robot arm.

Background

With the development of technology, robots have been applied to more and more occasions. The higher the operational flexibility requirements for the robot. Particularly, for the arm of the robot, which is used as an execution unit, if the requirement of high flexibility is met and the operation can be accurately and faultlessly carried out, the cable penetrating through the execution unit plays a crucial role. Therefore, the design of the cable for the robot arm is raised to a high demand.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a resistant wear-resisting and super gentle tough cable for robot arm of buckling.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a super gentle resistant cable of twisting for robot arm, its cross section includes conductive layer, cladding from inside to outside in proper order the shielding layer in conductive layer periphery is constituteed, the conductive layer including the even number root heart yearn that the transposition set up mutually, the parcel be in the aluminium foil layer of even number root heart yearn periphery, the heart yearn constitute by center conductor and the insulating layer of cladding in the periphery, the shielding layer including the cladding at the woven belt layer and the sheath of conductive layer periphery, center conductor form by a plurality of strands of hyperfine tin copper alloy silk and at least one kevlar fiber transposition mutually, the insulating layer make by the crosslinked PE material, the sheath make by the wear-resisting PVC material of high flexibility.

Furthermore, the lay length of the central conductor is 8-20 mm.

The conductor layer also comprises a filler filled in the gaps of the core wires.

And a grounding wire consistent with the central conductor is also arranged between the aluminum foil layer and the insulating layer.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model discloses cable center conductor adopts the transposition of stranded hyperfine tin copper alloy silk mutually, is adding the kevlar cellosilk simultaneously, has replaced the mode that current conductor adopted tinned copper or naked copper, and simultaneously, the insulating layer of heart yearn adopts crosslinked PE (XL-PE) material, also makes the cable further have super high tensile strength. The outermost layer of the sheath is made of high-flexibility wear-resistant PVC, so that the cable is guaranteed to have high wear resistance. Therefore, the whole cable has ultrahigh flexibility and wear resistance, is very suitable for the robot arm, and has greater practicability.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a cross-sectional view of the preferred embodiment of the cable of the present invention.

Wherein: 1. a conductor layer; 11. a core wire; 111. a center conductor; 112. An insulating layer; 12. An aluminum foil layer; 13. a filler; 15. a ground line;

2. a shielding layer; 21. weaving a belt layer; 22. a sheath.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, the cable is linear, and includes a conductor layer 1 and a shielding layer 2 covering the periphery of the conductor layer 1 from inside to outside in cross section. The following is a detailed description of each part of the structure and the main points:

the conductor layer 1 is composed of an even number of core wires 11, an aluminum foil layer 12 wrapping the outer peripheries of all the core wires 11, and a filler 13 filled between the core wires 11 and the aluminum foil layer 12. Wherein all the core wires 11 are twisted.

Each core wire 11 is composed of a central conductor 111 and an insulating layer 112 covering the periphery of the central conductor 111. The central conductor 111 is twisted by using a plurality of ultra-fine tin-copper alloy wires, and at least one Kevlar fiber wire is added to the ultra-fine tin-copper alloy wires and twisted together, wherein the twisting distance is set as small as possible, and is usually 8-20 mm. Because the conventional tinned copper or bare copper adopted as a conductor is replaced by stranding a plurality of ultra-fine tin-copper alloy wires, the conductivity of the conductor is high and can reach more than 80%. The Kevlar fiber is added into the tin-copper alloy wire, the material is originally named as poly-p-phenylene terephthalamide, and the material has low density, high strength, good toughness, high temperature resistance and easy processing and forming, so that the whole central conductor is more resistant to bending.

The insulating layer 112 on the periphery of the central conductor 111 is also made of a cross-linked PE material (XL-PE) with high mechanical property, and the XL-PE can meet wide processing environment temperature from-40 to 150 ℃, and can meet different application environments of customers.

The shielding layer 2 comprises a braided belt layer 21 for wrapping the conductor layer 1 and an outermost sheath 22, wherein the braided belt layer 21 is mainly woven by a tinned copper strip, and the sheath 22 is made of a high-flexibility PVC material to replace the conventional mode of adopting a PU material.

A ground wire 15 having the same material and twisting manner as the central conductor 111 is provided between the aluminum foil layer 12 and the insulating layer 112.

The utility model discloses the cable adopts the center conductor to adopt the hyperfine tin copper alloy silk of stranded, adds the pliability of Kevlar cellosilk in order to increase the wire rod simultaneously in the conductor, adopts less lay in addition, has further increased the resistant bending nature of whole conductor. The insulating layer of the conductor is made of XL-PE material, and the sheath is made of high-flexibility PVC material, so that the whole cable further has high wear resistance and tensile resistance.

The utility model discloses the cable is applicable to robot arm system, and through the test, it lays the stroke and can reach 1500mm, acceleration 24 ms 2, and moving speed 5 ms, dilatory test life-span is greater than 1000 ten thousand times. Can satisfy the oil-proof environment of the robot, and can be even used in the environment of invasive mineral oil leakage.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a super gentle resistant cable of turning round for robot arm which characterized in that: its cross section from inside to outside includes conductor layer, cladding in proper order the shielding layer of conductor layer periphery, the conductor layer including the even number root heart yearn that the transposition set up mutually, the parcel is in the aluminium foil layer of even number root heart yearn periphery, the heart yearn constitute by center conductor and the insulating layer of cladding in the periphery, the shielding layer include the cladding at the woven belt layer and the sheath of conductor layer periphery, characterized in that: the central conductor is formed by twisting a plurality of strands of ultra-fine tin-copper alloy wires and at least one Kevlar fiber wire, the insulating layer is made of a cross-linked PE material, and the sheath is made of a high-flexibility wear-resistant PVC material.

2. The ultra-flexible torsion-resistant cable for a robot arm according to claim 1, characterized in that: the twisting pitch of the central conductor is 8-20 mm.

3. The ultra-flexible torsion-resistant cable for a robot arm according to claim 1, characterized in that: the conductor layer also comprises a filler filled in the gaps of the core wires.

4. The ultra-flexible torsion-resistant cable for a robot arm according to claim 1, characterized in that: and a grounding wire consistent with the central conductor is also arranged between the aluminum foil layer and the insulating layer.