A flexible cable for corrosion-resistant industrial robots

Abstract

The present invention discloses a corrosion-resistant flexible cable for industrial robots, which relates to the technical field of flexible cables and includes an outer protective layer and a cable core. A limiting member is provided on the transverse central axis of the outer protective layer, and a protective component is installed on the outer wall of the armored layer. Through the setting of the protective component, when the connecting ring is stressed and deformed, it pushes two sets of extrusion blocks to slide at both ends of the V-shaped guiding block, and pushes the rotating block to rotate and close with the adjacent rotating block, thereby supporting the connecting ring and preventing the connecting ring from continuing to sink downward. At the same time, the elastic U-shaped ring is stressed and deformed, so that one end of the adjacent first limiting ring and the second limiting ring is closed, and multiple groups of first limiting rings and second limiting rings are combined into a tube shape on the surface of the armored layer, thereby increasing the structural strength of the armored layer and enhancing the protection of the cable core. After the first limiting ring and the second limiting ring are reset, they will not affect the bending of the cable body, so as to ensure the flexibility of the cable body.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible cables, and particularly relates to a valve device for oil wells. Background Art

[0002] An industrial robot is a complex intelligent machine integrating advanced technologies of multiple disciplines such as machinery, electronics, control, computer, sensors, artificial intelligence, and control technology. As an important component for transmitting power and control signals, the flexible cable used in industrial robots must have performance suitable for the operation of industrial robots to meet the usage requirements.

[0003] Chinese Patent CN114822943A, published on July 29, 2022, discloses a corrosion-resistant and tensile-resistant cable for power engineering. By annularly and equidistantly arranging a plurality of shear fork structure groups between the outer armor layer and the inner armor layer, corrosion-resistant fillers are filled between each shear fork structure group. At the same time, multiple cable cores and the protective layer for multi-layer protection of the cable cores are all located inside the inner armor layer. Thus, when the outer armor shell is subjected to pulling and needs to deform, the outer armor layer squeezes and deforms the elastic corrosion-resistant fillers and each shear fork structure group inside. Each shear fork structure group cooperates with the extrusion of the outer armor layer through the arc-shaped pieces fixedly connected to the inner wall of the outer armor layer and each inner ring sliding on the outer wall of the inner armor layer. Due to the action of the inner ring and the arc-shaped pieces, it will not affect the inner armor ring. Therefore, when the outer armor layer undergoes tensile deformation, the cable cores inside the inner armor layer are not affected and can be used normally. However, when an external force acts vertically downward on the cable, this corrosion-resistant and tensile-resistant cable will cause the cable to deform, resulting in friction between the insulating layers on the surfaces of each group of cable cores. When the inner core wires inside are subjected to shear, they may be damaged due to excessive shear or pressure, making it still inconvenient to use. Summary of the Invention

[0004] The purpose of the present invention is to provide a corrosion-resistant flexible cable for industrial robots to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A corrosion-resistant flexible cable for industrial robots provided by the present invention includes an outer protective layer and cable cores. A limiting member is arranged on the transverse central axis of the outer protective layer. Cable cores are arranged on the surface of the limiting member. An inner protective layer is coated on the outer wall of the cable cores. High-temperature-resistant fillers are filled between the inner protective layer and the limiting member. An armor layer is coated on the outer wall of the inner protective layer. A protective component is installed on the outer wall of the armor layer.

[0007] Further, the protection component includes protrusions provided on the surface of the armored layer and elastic U-shaped rings adapted to the protrusions. There is a clearance gap between the protrusions and the elastic U-shaped rings. First limit rings and second limit rings adapted to the elastic U-shaped rings are provided on the surface of the armored layer, and the first limit rings and the second limit rings can slide horizontally along the surface of the armored layer. The first limit rings and the second limit rings are symmetric with each other centered on the elastic U-shaped rings.

[0008] Further, the protection component further includes a base adapted to the surface of the elastic U-shaped ring and a connecting ring fixedly connected to the inner wall of the outer protection layer and perpendicular to the base. Rotating blocks are rotatably connected to both ends of the base. Spring pieces adapted to the rotating blocks are provided at the outer edge positions of both ends of the base. A V-shaped guiding block is provided at the central position of the base. A connecting block perpendicular to the V-shaped guiding block is provided on the side of the connecting ring facing the base. An extrusion block adapted to the rotating block is provided at one end of the connecting block close to the V-shaped guiding block.

[0009] Further, multiple groups of the limiting members are spaced along the transverse central axis of the outer protection layer. The limiting member includes a V-shaped limiting groove adapted to the cable core. A first elastic pad adapted to the cable core is provided on one side of the V-shaped limiting groove close to the center of the limiting member. A second elastic pad is provided on one side of the concave position of the V-shaped limiting groove close to the inner wall of the inner protection layer.

[0010] Further, the inner protection layer includes an insulating layer and a high-temperature resistant layer. The insulating layer covers the surface of the high-temperature resistant filler. A high-temperature resistant layer is provided between the insulating layer and the armored layer.

[0011] Further, an elastic filler is filled between the outer protection layer and the armored layer.

[0012] Further, the high-temperature resistant filler is a graphene material.

[0013] Further, the armored layer is of an interlocking structure.

[0014] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0015] (1) Through the provision of the protection component, the position of the force-bearing part of the outer protection layer sinks downward, deforming the connecting ring, pushing the two extrusion blocks to slide at both ends of the V-shaped guiding block, thereby driving the rotating block to rotate, closing the adjacent two rotating blocks, thus supporting the connecting ring and preventing the force-bearing part of the connecting ring from sinking further. At the same time, the elastic U-shaped ring deforms under force, closing one end of the adjacent first limiting ring and the second limiting ring, and combining multiple first limiting rings and second limiting rings into a tube shape on the surface of the armor layer, thereby increasing the structural strength of the armor layer, enhancing the protection of the cable core. After the first limiting ring and the second limiting ring are reset, they will not affect the bending of the cable body, thus ensuring the flexibility of the cable body.

[0016] (2) Through the provision of the limiting member, dragging the cable body will cause the cable core to squeeze the V-shaped limiting groove, and make one end of the first elastic pad located in the dragging direction of the cable body shrink towards the center of the limiting member, thereby increasing the included angle of the cable core inside the V-shaped limiting groove and approaching 180° infinitely, so as to extend the length of the cable core inside the limiting member, and further achieve the buffering protection of the cable core when it is stretched, enhancing the tensile strength of the cable body.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The specification drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0019] Figure 1 is a schematic cross-sectional structure diagram of the present invention;

[0020] Figure 2 is a schematic diagram of the mutually cooperating structure of the V-shaped limiting groove and the first elastic pad of the present invention;

[0021] Figure 3 is a schematic diagram of the mutually cooperating structure of the second elastic pad and the insulating layer of the present invention;

[0022] Figure 4 is a schematic diagram of the mutually cooperating structure of the armor layer and the protrusion of the present invention;

[0023] Figure 5 is a schematic diagram of the mutually cooperating structure of the armor layer and the first limiting ring of the present invention;

[0024] Figure 6 is a schematic diagram of the mutually cooperating structure of the elastic U-shaped ring and the first limiting ring of the present invention;

[0025] Figure 7This is a schematic diagram of the mutual cooperation structure of the connecting block and the extrusion block of the present invention.

[0026] In the figure:

[0027] 1. Outer protective layer; 2. Limiting member; 201. V-shaped limiting groove; 202. First elastic pad; 203. Second elastic pad; 3. Cable core; 4. Inner protective layer; 401. Insulating layer; 402. High-temperature resistant layer; 5. High-temperature resistant filler; 6. Armor layer; 7. Elastic filler; 8. Protection component; 801. Protrusion; 802. Elastic U-shaped ring; 803. First limiting ring; 804. Second limiting ring; 805. Base; 806. Rotating block; 807. Spring piece; 808. V-shaped guiding block; 809. Connecting ring; 810. Connecting block; 811. Extrusion block. Specific embodiments

[0028] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0029] Embodiment 1

[0030] Please refer to Figures 1-7 , the present invention provides a technical solution: a flexible cable for an industrial robot with corrosion resistance, including an outer protective layer 1 and a cable core 3. A limiting member 2 is arranged on the horizontal central axis of the outer protective layer 1, the cable core 3 is arranged on the surface of the limiting member 2, an inner protective layer 4 is coated on the outer wall of the cable core 3, a high-temperature resistant filler 5 is filled between the inner protective layer 4 and the limiting member 2, an armor layer 6 is coated on the outer wall of the inner protective layer 4, and a protection component 8 is installed on the outer wall of the armor layer 6.

[0031] During use, when the cable body is deformed under external pressure, the position of the stressed part of the outer protective layer 1 sinks downward and squeezes the internal elastic filler 7. At this time, through the cooperation of each component of the protection component 8 inside the sunken part of the outer protective layer 1, the force acting vertically on the surface of the armor layer 6 can be dispersed to both ends, thereby increasing the stress area of the armor layer 6, reducing the pressure acting on the surface of the armor layer 6, and enhancing the compressive capacity of the cable body.

[0032] Please refer to Figures 4-7, as shown in the figure, the protection component 8 includes a protrusion 801 provided on the surface of the armored layer 6 and an elastic U-shaped ring 802 adapted to the protrusion 801. There is a clearance gap between the protrusion 801 and the elastic U-shaped ring 802. The surface of the armored layer 6 is provided with a first limiting ring 803 and a second limiting ring 804 adapted to the elastic U-shaped ring 802, and the first limiting ring 803 and the second limiting ring 804 can slide horizontally along the surface of the armored layer 6. The first limiting ring 803 and the second limiting ring 804 are symmetric with each other centered on the elastic U-shaped ring 802.

[0033] During use, the position of the stressed part of the outer protection layer 1 sinks downward and deforms the connecting ring 809, and applies pressure to the base 805 through the connecting block 810 and the V-shaped guiding block 808, so that the base 805 squeezes the top end of the elastic U-shaped ring 802, causing the elastic U-shaped ring 802 to deform and contact the protrusion 801 on the surface of the armored layer 6. At this time, both ends of the elastic U-shaped ring 802 will slide outward, thereby pushing the first limiting ring 803 and the second limiting ring 804 to displace. Because when the stressed point of the outer protection layer 1 sinks, it will drive the surrounding parts to sink synchronously. Therefore, when the outer protection layer 1 deforms under stress, multiple groups of the first limiting ring 803 and the second limiting ring 804 will not displace, so that one end of the first limiting ring 803 and the second limiting ring 804 will close with one end of the adjacent first limiting ring 803 and the second limiting ring 804, and multiple groups of the first limiting ring 803 and the second limiting ring 804 will be combined into a tube shape on the surface of the armored layer 6, thereby increasing the structural strength of the armored layer 6 and enhancing the protection of the cable core 3. When the surface of the outer protection layer 1 is no longer stressed, the elastic U-shaped ring 802 pulls the first limiting ring 803 and the second limiting ring 804 to reset under the action of force, separating multiple groups of the first limiting ring 803 and the second limiting ring 804, so that the first limiting ring 803 and the second limiting ring 804 will not affect the bending of the cable body, thereby ensuring the flexibility of the cable body. The protrusion 801 plays a positioning role during the deformation of the elastic U-shaped ring 802, so that the elastic U-shaped ring 802 can always be perpendicular to the connecting ring 809.

[0034] Please refer to Figure 7 , as shown in the figure, the protection component 8 further includes a base 805 adapted to the surface of the elastic U-shaped ring 802 and a connecting ring 809 fixedly connected to the inner wall of the outer protection layer 1 and perpendicular to the base 805. Rotating blocks 806 are rotatably connected to both ends of the base 805. Spring pieces 807 adapted to the rotating blocks 806 are provided at the outer edge positions of both ends of the base 805. A V-shaped guiding block 808 is provided at the central position of the base 805. A connecting block 810 perpendicular to the V-shaped guiding block 808 is provided on the side of the connecting ring 809 facing the base 805. An extrusion block 811 adapted to the rotating block 806 is provided at one end of the connecting block 810 close to the V-shaped guiding block 808.

[0035] During use, when the connecting ring 809 deforms, it will push two sets of extrusion blocks 811 to slide at both ends of the V-shaped guide block 808 through the connecting block 810. As the distance between the connecting block 810 and the V-shaped guide block 808 gets closer, the angle between the two sets of extrusion blocks 811 will become larger. Thus, when the extrusion blocks 811 slide downward, they can push the rotating block 806 to rotate on the surface of the base 805 toward the side away from the V-shaped guide block 808. When multiple sets of rotating blocks 806 rotate to a certain angle, the top inclined surfaces of the two rotating blocks 806 rotating in opposite directions will close and limit the continuous rotation of the rotating block 806. Thereby, it limits the continuous downward sliding of the extrusion blocks 811 and plays a supporting role for the connecting ring 809, preventing the stressed part of the connecting ring 809 from continuing to sink downward. When the connecting ring 809 is no longer stressed and resets, the spring piece 807 can push the rotating block 806 to reset under the action of force.

[0036] Please refer to Figures 2-3 , as shown in the figure, multiple sets of limit members 2 are arranged at intervals along the transverse central axis of the outer protective layer 1. The limit member 2 includes a V-shaped limit groove 201 adapted to the cable core 3. A first elastic pad 202 adapted to the cable core 3 is arranged on one side of the V-shaped limit groove 201 close to the center of the limit member 2. A second elastic pad 203 is arranged on one side of the recessed position of the V-shaped limit groove 201 close to the inner wall of the inner protective layer 4.

[0037] During use, dragging the cable body will cause the cable core 3 to squeeze the V-shaped limit groove 201, and make one end of the first elastic pad 202 in the dragging direction of the cable body contract toward the center of the limit member 2. Thereby, the angle between the cable cores 3 located inside the V-shaped limit groove 201 becomes larger and infinitely approaches 180°, so as to extend the length of the cable core 3 inside the limit member 2, and further realize the buffer protection of the cable core 3 when it is stretched, enhancing the tensile strength of the cable body. And the second elastic pad 203 can limit the cable core 3, ensuring the stability of the cable core 3 inside the V-shaped limit groove 201.

[0038] Please refer to Figures 1-5 , as shown in the figure, the inner protective layer 4 includes an insulating layer 401 and a high-temperature resistant layer 402. The insulating layer 401 is coated on the surface of the high-temperature resistant filler 5, and a high-temperature resistant layer 402 is arranged between the insulating layer 401 and the armor layer 6.

[0039] During use, the main function of the insulating layer 401 is to prevent current from passing through the cable core 3 or the cable outer skin into the surrounding environment or other conductors, thereby preventing electrical accidents such as electric shock and short circuit. And the high-temperature resistant layer 402 can resist high-temperature environments and prevent the cable core 3 from being damaged due to overheating, thus ensuring the long-term stable operation of the cable core 3.

[0040] Please refer to Figures 1-5 , as shown in the figure, an elastic filler 7 is filled between the outer protective layer 1 and the armor layer 6.

[0041] During use, after the tensile force on the surface of the outer protective layer 1 disappears, the characteristics of the elastic filler 7 can push the outer protective layer 1 back to its original position.

[0042] Please refer to Figures 1-5 , as shown in the figure, the high-temperature resistant filler 5 is made of graphene material.

[0043] During use, graphene has good tensile properties and excellent thermal conductivity, and can absorb the heat generated by the cable core 3.

[0044] Please refer to Figures 1-5 , as shown in the figure, the armor layer 6 is of an interlocking structure.

[0045] During use, the interlocking structures are closely connected layer by layer without gaps, and the cable core 3 is installed inside, which can improve the anti-rolling strength of the cable body.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A corrosion-resistant flexible cable for an industrial robot, comprising an outer protective layer (1) and a cable core (3), characterized in that: A limit piece (2) is arranged on the transverse central axis of the outer protective layer (1), a cable core (3) is arranged on the surface of the limit piece (2), an inner protective layer (4) is coated on the outer wall of the cable core (3), a high temperature resistant filler (5) is filled between the inner protective layer (4) and the limit piece (2), an armor layer (6) is coated on the outer wall of the inner protective layer (4), and a protective component (8) is installed on the outer wall of the armor layer (6); The protective component (8) comprises a protrusion (801) arranged on the surface of the armor layer (6) and an elastic U-shaped ring (802) adapted to the protrusion (801), a clearance gap is provided between the protrusion (801) and the elastic U-shaped ring (802), a first limiting ring (803) and a second limiting ring (804) adapted to the elastic U-shaped ring (802) are provided on the surface of the armor layer (6), and the first limiting ring (803) and the second limiting ring (804) are capable of sliding in a horizontal direction along the surface of the armor layer (6), and the first limiting ring (803) and the second limiting ring (804) are symmetrical with each other with the elastic U-shaped ring (802) as the center; The protective assembly (8) further comprises a base (805) adapted to the surface of the elastic U-shaped ring (802) and a connecting ring (809) fixedly connected to the inner wall of the outer protective layer (1) and perpendicular to the base (805); rotating blocks (806) are rotatably connected to both ends of the base (805); spring sheets (807) adapted to the rotating blocks (806) are arranged at the outer edge positions of both ends of the base (805); a V-shaped guide block (808) is arranged at the center position of the base (805); a connecting block (810) perpendicular to the V-shaped guide block (808) is arranged on a side of the connecting ring (809) facing the base (805); and an extrusion block (811) adapted to the rotating block (806) is arranged at one end of the connecting block (810) close to the V-shaped guide block (808).

2. The corrosion-resistant flexible cable for industrial robots according to claim 1, characterized in that: A plurality of groups of the limiting members (2) are arranged at intervals along the transverse central axis of the outer protective layer (1), the limiting member (2) comprising a V-shaped limiting groove (201) adapted to the cable core (3), a first elastic pad (202) adapted to the cable core (3) being arranged on a side of the V-shaped limiting groove (201) close to the center of the limiting member (2), and a second elastic pad (203) being arranged on a side of the recessed position of the V-shaped limiting groove (201) close to the inner wall of the inner protective layer (4).

3. The corrosion-resistant flexible cable for industrial robots according to claim 1, characterized in that: The inner protective layer (4) comprises an insulating layer (401) and a high temperature resistant layer (402); the insulating layer (401) is coated on the surface of the high temperature resistant filler (5); and the high temperature resistant layer (402) is provided between the insulating layer (401) and the armor layer (6).

4. The corrosion-resistant flexible cable for an industrial robot according to claim 1, characterized in that: An elastic filler (7) is filled between the outer protective layer (1) and the armor layer (6).

5. The corrosion-resistant flexible cable for industrial robots according to claim 1, characterized in that: The high temperature resistant filler (5) is a graphene material.

6. The corrosion-resistant flexible cable for industrial robots according to claim 1, characterized in that: The armor layer (6) is an interlocking structure.

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