Corrosion-resistant flexible cable for industrial robot

Abstract

The invention discloses a corrosion-resistant flexible cable for an industrial robot, and relates to the technical field of flexible cables, the corrosion-resistant flexible cable comprises an outer protection layer and a cable core, the transverse central axis of the outer protection layer is provided with a limiting piece, and the outer wall of an armor layer is provided with a protection assembly. Through the arrangement of the protection assembly, a connecting ring is stressed to deform to push two sets of extrusion blocks to slide at the two ends of a V-shaped guide block and push a rotating block to rotate to be closed with an adjacent rotating block, so that the connecting ring is supported and prevented from continuously sinking downwards, meanwhile, an elastic U-shaped ring is stressed to deform, and the connecting ring is prevented from being damaged. One ends of the adjacent first limiting rings and second limiting rings are closed, so that the multiple groups of first limiting rings and second limiting rings are combined into a tubular shape on the surface of the armor layer, the structural strength of the armor layer is improved, the protection on the cable core is enhanced, the bending of the cable body is not influenced after the first limiting rings and the second limiting rings are reset, and the service life of the cable body is prolonged. Therefore, the flexibility of the cable body can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of flexible cables, and in particular to a valve device for an oil well. Background Art

[0002] Industrial robots are complex intelligent machines that integrate advanced technologies from multiple disciplines such as mechanics, electronics, control, computers, sensors, artificial intelligence, and control technology. Industrial robots use flexible cables as important components for transmitting power and control signals. They must have performance that is compatible with the work of industrial robots in order to meet usage requirements.

[0003] The Chinese patent CN114822943A published on July 29, 2022 discloses a corrosion-resistant and tensile-resistant cable for power engineering. A plurality of scissor-type structure groups are arranged in a circular manner with equal spacing between the outer layer of armor and the inner layer of armor. The space between each scissor-type structure group is filled with corrosion-resistant fillers. At the same time, multiple cable cores and a protective layer for multi-layer protection of the cable core are located inside the inner layer of armor. When the armor shell is pulled and needs to be deformed, the outer layer of armor squeezes and deforms the elastic corrosion-resistant fillers and each scissor-type structure group inside. Each scissor-type structure group is connected to the armor by the armor. The arc-shaped pieces fixedly connected to the inner wall of the outer layer and the inner rings sliding on the outer wall of the inner layer of the armor cooperate with the extrusion of the outer layer of the armor. The inner ring and the arc-shaped pieces will not affect the inner ring of the armor. Therefore, when the outer layer of the armor is tensilely deformed, the cable core inside the inner layer of the armor is not affected by it to ensure its normal use. However, when an external force acts vertically downward on the corrosion-resistant and tensile-resistant cable, it will cause the cable to deform and cause friction on the insulating layer of each group of cable core surfaces. When the inner core wire is sheared, it may be damaged due to shearing or excessive pressure, making it still inconvenient to use. Summary of the invention

[0004] The object of the present invention is to provide a corrosion-resistant flexible cable for an industrial robot to solve the problems raised in the above-mentioned background technology.

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

[0006] The present invention provides a corrosion-resistant flexible cable for an industrial robot, comprising an outer protective layer and a cable core, a limit piece is arranged on the transverse central axis of the outer protective layer, a cable core is arranged on the surface of the limit piece, an inner protective layer is coated on the outer wall of the cable core, a high-temperature resistant filler is filled between the inner protective layer and the limit piece, an armor layer is coated on the outer wall of the inner protective layer, and a protective component is installed on the outer wall of the armor layer.

[0007] Furthermore, the protective component includes a protrusion arranged on the surface of the armor layer and an elastic U-shaped ring adapted to the protrusion, a clearance is provided between the protrusion and the elastic U-shaped ring, the surface of the armor layer is provided with a first limiting ring and a second limiting ring adapted to the elastic U-shaped ring, and the first limiting ring and the second limiting ring can slide in the horizontal direction along the surface of the armor layer, and the first limiting ring and the second limiting ring are symmetrical to each other with the elastic U-shaped ring as the center.

[0008] Furthermore, the protective component also 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 protective layer and perpendicular to the base, the two ends of the base are rotatably connected with rotating blocks, the outer edge positions of the two ends of the base are provided with spring sheets adapted to the rotating blocks, the center position of the base is provided with a V-shaped guide block, the side of the connecting ring facing the base is provided with a connecting block perpendicular to the V-shaped guide block, and the end of the connecting block close to the V-shaped guide block is provided with an extrusion block adapted to the rotating block.

[0009] Furthermore, the limiting members are arranged in multiple groups at intervals along the transverse central axis of the outer protective layer, and the limiting members include a V-shaped limiting groove adapted to the cable core, a first elastic pad adapted to the cable core is arranged on the side of the V-shaped limiting groove close to the center of the limiting member, and a second elastic pad is arranged on the side of the recessed position of the V-shaped limiting groove close to the inner wall of the inner protective layer.

[0010] Furthermore, the inner protective layer includes an insulating layer and a high temperature resistant layer, the insulating layer is coated on the surface of the high temperature resistant filler, and the high temperature resistant layer is arranged between the insulating layer and the armor layer.

[0011] Furthermore, elastic filler is filled between the outer protective layer and the armor layer.

[0012] Furthermore, the high temperature resistant filler is graphene material.

[0013] Furthermore, the armor layer is an interlocking structure.

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

[0015] (1) In the present invention, the position of the stress-bearing part of the outer protective layer is recessed downward and the connecting ring is deformed by setting the protective component, thereby pushing the two groups of extrusion blocks to slide at the two ends of the V-shaped guide block, thereby pushing the rotating block to rotate, so that the two adjacent groups of rotating blocks are closed, thereby supporting the connecting ring and preventing the stress-bearing part of the connecting ring from continuing to be recessed downward. At the same time, the elastic U-shaped ring is deformed by the force, so that one end of the adjacent first limiting ring and the second limiting ring are closed, so that multiple groups of first limiting rings and second limiting rings are combined into a tubular shape on the surface of the armor layer, thereby increasing the structural strength of the armor 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, thereby ensuring the flexibility of the cable body.

[0016] (2) The present invention provides a limiter so that dragging the cable body will cause the cable core to squeeze the V-shaped limiter groove, and cause the end of the first elastic pad located in the dragging direction of the cable body to shrink toward the center of the limiter, thereby increasing the angle of the cable core inside the V-shaped limiter groove and making it infinitely close to 180°, thereby extending the length of the cable core inside the limiter, thereby achieving buffering protection for the cable core when stretched, and enhancing the tensile strength of the cable body.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

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

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

[0021] Figure 3 It is a schematic diagram of the structure of the second elastic pad and the insulating layer cooperating with each other in the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the armor layer and the protrusions cooperating with each other in the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the armor layer and the first limiting ring cooperating with each other in the present invention;

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

[0025] Figure 7It is a schematic diagram of the structure of the connection block and the extrusion block cooperating with each other in the present invention.

[0026] In the figure:

[0027] 1. Outer protective layer; 2. Limiting piece; 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. Protective assembly; 801. Protrusion; 802. Elastic U-shaped ring; 803. First limiting ring; 804. Second limiting ring; 805. Base; 806. Rotating block; 807. Spring sheet; 808. V-shaped guide block; 809. Connecting ring; 810. Connecting block; 811. Extrusion block. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0029] Embodiment 1

[0030] See also Figure 1-Figure 7 The present invention provides a technical solution: a corrosion-resistant flexible cable for an industrial robot, comprising an outer protective layer 1 and a cable core 3, a limit piece 2 is arranged on the transverse central axis of the outer protective layer 1, the cable core 3 is arranged on the surface of the limit piece 2, the outer wall of the cable core 3 is coated with an inner protective layer 4, a high temperature resistant filler 5 is filled between the inner protective layer 4 and the limit piece 2, the outer wall of the inner protective layer 4 is coated with an armor layer 6, and a protective component 8 is installed on the outer wall of the armor layer 6.

[0031] When in use, the cable body is deformed by external pressure, causing the force-bearing part of the outer protective layer 1 to sink downward and squeeze the internal elastic filler 7. At this time, the protective component 8 inside the recessed part of the outer protective layer 1 can disperse the force acting vertically on the surface of the armor layer 6 to both ends through the cooperation of various components, thereby increasing the force-bearing area of ​​the armor layer 6, reducing the pressure acting on the surface of the armor layer 6, and enhancing the compressive resistance of the cable body.

[0032] See also Figure 4-Figure 7As shown in the figure, the protective component 8 includes a protrusion 801 arranged on the surface of the armor layer 6 and an elastic U-shaped ring 802 adapted to the protrusion 801, and there is a clearance between the protrusion 801 and the elastic U-shaped ring 802. The surface of the armor 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 in the horizontal direction along the surface of the armor layer 6, and the first limiting ring 803 and the second limiting ring 804 are symmetrical to each other with the elastic U-shaped ring 802 as the center.

[0033] When in use, the position of the stressed part of the outer protective layer 1 is sunken downward and the connecting ring 809 is deformed, and pressure is applied to the base 805 through the connecting block 810 and the V-shaped guide block 808, so that the base 805 squeezes the top of the elastic U-shaped ring 802, causing the elastic U-shaped ring 802 to deform and contact with the protrusion 801 on the surface of the armor layer 6. At this time, the two 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 move. Because the stress point of the outer protective layer 1 is sunken, it will drive the surrounding parts to be sunken synchronously. Therefore, when the outer protective layer 1 is deformed under stress, multiple groups of first limiting rings 803 and second limiting rings 804 will not move, so that one end of the first limiting ring 803 and the second limiting ring 804 will be aligned with the adjacent second limiting rings. A limiting ring 803 is closed with one end of the second limiting ring 804, so that multiple groups of first limiting rings 803 and second limiting rings 804 are combined into a tube on the surface of the armor layer 6, thereby increasing the structural strength of the armor layer 6 and enhancing the protection of the cable core 3. When the surface of the outer protective layer 1 is no longer subjected to force, 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, so that the multiple groups of first limiting rings 803 and the second limiting ring 804 are separated, 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, and the protrusion 801 plays a positioning role in the deformation process of the elastic U-shaped ring 802, so that the elastic U-shaped ring 802 can always be in a vertical state with the connecting ring 809.

[0034] See also Figure 7 As shown in the figure, the protective component 8 also 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 protective layer 1 and perpendicular to the base 805, and the two ends of the base 805 are rotatably connected with rotating blocks 806, and the outer edge positions of the two ends of the base 805 are provided with spring sheets 807 adapted to the rotating blocks 806, and the center position of the base 805 is provided with a V-shaped guide block 808, and the side of the connecting ring 809 facing the base 805 is provided with a connecting block 810 perpendicular to the V-shaped guide block 808, and the end of the connecting block 810 close to the V-shaped guide block 808 is provided with an extrusion block 811 adapted to the rotating block 806.

[0035] When in use, the deformation of the connecting ring 809 will push the two groups of extrusion blocks 811 to slide on the two 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 becomes closer, the angle between the two groups of extrusion blocks 811 will become larger, so that when the extrusion block 811 slides downward, it can push the rotating block 806 to rotate on the surface of the base 805 away from the V-shaped guide block 808. When the multiple groups of rotating blocks 806 rotate to a certain angle, the top inclined surfaces of the two groups of rotating blocks 806 rotating in opposite directions will close and limit the rotating block 806 from continuing to rotate, thereby limiting the extrusion block 811 from continuing to slide downward and supporting the connecting ring 809 to prevent the force-bearing part of the connecting ring 809 from continuing to sink downward. When the connecting ring 809 is no longer subjected to force and resets, the force of the spring sheet 807 can push the rotating block 806 to reset.

[0036] See also Figure 2-Figure 3 As shown in the figure, a plurality of groups 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 the side of the V-shaped limit groove 201 close to the center of the limit member 2, and a second elastic pad 203 is arranged on the side of the recessed position of the V-shaped limit groove 201 close to the inner wall of the inner protective layer 4.

[0037] When in use, dragging the cable body will cause the cable core 3 to squeeze the V-shaped limit groove 201, and the end of the first elastic pad 202 located in the dragging direction of the cable body will shrink toward the center of the limit member 2, thereby increasing the angle of the cable core 3 located inside the V-shaped limit groove 201 and infinitely approaching 180°, thereby extending the length of the cable core 3 inside the limit member 2, thereby achieving buffering protection for the cable core 3 when stretched, and enhancing the tensile strength of the cable body, while the second elastic pad 203 can limit the cable core 3, thereby ensuring the stability of the cable core 3 inside the V-shaped limit groove 201.

[0038] See also Figure 1-Figure 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 the high temperature resistant layer 402 is arranged between the insulating layer 401 and the armor layer 6 .

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

[0040] See also Figure 1-Figure 5 As shown in the figure, an elastic filler 7 is filled between the outer protective layer 1 and the armor layer 6.

[0041] When in use, after the tension on the surface of the outer protective layer 1 disappears, the outer protective layer 1 can be pushed back to its original position due to the characteristics of the elastic filler 7 .

[0042] See also Figure 1-Figure 5 , as shown in the figure, the high temperature resistant filler 5 is a graphene material.

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

[0044] See also Figure 1-Figure 5 , as shown in the figure, the armor layer 6 is an interlocking structure.

[0045] When in use, the interlocking structures are interlocked layer by layer without any gaps, and the cable core 3 is installed inside, which can improve the anti-crushing strength of the cable body.

[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which 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).

2. The corrosion-resistant flexible cable for industrial robots according to claim 1, characterized in that: 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); 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.

3. The corrosion-resistant flexible cable for industrial robots according to claim 2, characterized in that: 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).

4. The corrosion-resistant flexible cable for an industrial robot 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).

5. 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).

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

7. 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.

8. 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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