Bending-resistant flexible high-tear-resistant flexible cable for robot

Abstract

The invention provides a bending-resistant flexible high-tear-resistance flexible cable for a robot, and relates to the technical field of cables. The bending-resistant flexible high-tear-resistance flexible cable for the robot comprises an outer protective sleeve, the inner wall of the outer protective sleeve is fixedly connected with an armor, the inner wall of the armor is fixedly connected with an insulating sleeve, the inner wall of the insulating sleeve is fixedly connected with an inner protective sleeve, the inner wall of the inner protective sleeve is fixedly connected with a supporting ring, and the supporting ring is fixedly connected with a cable. A plurality of core sleeves are arranged in the supporting ring, a cable core is fixedly connected in each core sleeve, and telescopic rods are fixedly connected between the core sleeves and the inner wall of the supporting ring. The supporting ring, the telescopic rod, the core sleeve, the cable core, the first spring and the second spring are arranged in the cable, and the core sleeve and the cable core are located in the cavity, so that when the cable is bent along with movement of the robot, the positions of the core sleeve and the cable core in the cable are shifted, the stress condition of the outer protective sleeve is reduced, and the tearing problem is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and specifically to a highly bend-resistant, flexible, and high tear-resistant soft cable for robots. Background Art

[0002] Robot cables are cables designed specifically for robots and must possess characteristics such as high flexibility, bend resistance, tensile strength, and abrasion resistance to adapt to the frequent movements and complex environments of robots.

[0003] During the operation of a robot, the cable will bend along with the movements of the robot, and the number of bends is relatively large. The existing cables all have a solid structure inside. When the cable bends during the movement following the robot, there will be a large extrusion force inside, which will cause the outer protective sleeve to tear. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a highly bend-resistant, flexible, and high tear-resistant soft cable for robots, which solves the problem that the existing cables all have a solid structure inside. When the cable bends during the movement following the robot, there will be a large extrusion force inside, which will cause the outer protective sleeve to tear.

[0006] (II) Technical Solutions

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A highly bend-resistant, flexible, and high tear-resistant soft cable for robots, including an outer protective sleeve. The inner wall of the outer protective sleeve is fixedly connected with an armor. The inner wall of the armor is fixedly connected with an insulating sleeve. The inner wall of the insulating sleeve is fixedly connected with an inner protective sleeve. The inner wall of the inner protective sleeve is fixedly connected with a support ring. A plurality of core sleeves are arranged inside the support ring. A cable core is fixedly connected inside each core sleeve. An expansion rod is fixedly connected between the core sleeve and the inner wall of the support ring. A first spring is sleeved on the circumferential surface of the expansion rod, and both ends of the first spring are fixedly connected with the outer wall of the core sleeve and the inner wall of the support ring respectively. A second spring is fixedly connected between adjacent two core sleeves, and the inside of the support ring is a cavity.

[0008] Preferably, the outer protective sleeve is mainly prepared from polyurethane, silicone oil, carbon nanotubes, and antioxidant materials, and the mass ratio of polyurethane, silicone oil, carbon nanotubes, and antioxidant is 10:2:1:3. The antioxidant is dilauryl thiodipropionate.

[0009] Preferably, the armor is woven by cross-weaving galvanized steel wires and stainless steel wires, and the insulating sleeve is made of natural rubber.

[0010] Preferably, the inner protective sleeve, the support ring and the core sleeve are all made of polyurethane material.

[0011] Preferably, a plurality of the support rings are provided, and are equidistantly arranged on the inner wall of the inner protective sleeve.

[0012] Preferably, a plurality of the telescopic rods, the first springs and the second springs are provided, and the telescopic rods, the first springs and the second springs are correspondingly arranged with the support rings.

[0013] (III) Beneficial effects

[0014] The present invention provides a flexible and highly tear-resistant soft cable for robots with bending resistance. The following beneficial effects are achieved:

[0015] In the present invention, by arranging a support ring, a telescopic rod, a core sleeve, a cable core, a first spring and a second spring inside, and the core sleeve and the cable core are located inside the cavity. When the cable bends as the robot moves, the positions of the inner core sleeve and the cable core will shift, reducing the force on the outer protective sleeve and effectively solving the tearing problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the external structure of the flexible and highly tear-resistant soft cable for robots with bending resistance proposed by the present invention;

[0017] Figure 2 is a side cross-sectional view of the flexible and highly tear-resistant soft cable for robots with bending resistance proposed by the present invention;

[0018] Figure 3 is Figure 2 a schematic diagram of structure A in

[0019] Among them, 1, outer protective sleeve; 2, armor; 3, insulating sleeve; 4, inner protective sleeve; 5, support ring; 6, telescopic rod; 7, core sleeve; 8, cable core; 9, first spring; 10, second spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment:

[0022] As Figures 1-3As shown in the figure, the embodiment of the present invention provides a flexible and highly tear-resistant soft cable for robots, including an outer protective sleeve 1. The main function of the outer protective sleeve 1 is to protect the internal structure. The inner wall of the outer protective sleeve 1 is fixedly connected with an armor 2. The armor 2 has strong mechanical strength, which plays a role in protecting and supporting the cable and prevents the cable from breaking. The inner wall of the armor 2 is fixedly connected with an insulating sleeve 3. The insulating sleeve 3 is mainly used for insulation. The inner wall of the insulating sleeve 3 is fixedly connected with an inner protective sleeve 4. The inner wall of the inner protective sleeve 4 is fixedly connected with a support ring 5. The main function of the support ring 5 is to support, which facilitates the arrangement of the internal telescopic rod 6, core sleeve 7, and cable core 8. There are multiple core sleeves 7 arranged inside the support ring 5. Each core sleeve 7 is fixedly connected with a cable core 8 inside. A telescopic rod 6 is fixedly connected between the core sleeve 7 and the inner wall of the support ring 5. A first spring 9 is sleeved on the circumferential surface of the telescopic rod 6, and both ends of the first spring 9 are fixedly connected with the outer wall of the core sleeve 7 and the inner wall of the support ring 5 respectively. The main functions of the first spring 9 and the second spring 10 are to buffer, and at the same time facilitate the core sleeve 7 and the cable core 8 to return to the initial state when they are no longer bent or squeezed. A second spring 10 is fixedly connected between adjacent two core sleeves 7, and the inside of the support ring 5 is a cavity. The structure of the cavity is set to facilitate the internal core sleeve 7 and cable core 8 to shift when the cable is bent, reduce the force on the outer protective sleeve, and effectively solve the tearing problem.

[0023] Cable bending and recovery process: When the cable bends during the movement following the robot, the internal core sleeve 7 and cable core 8 will shift inside the cavity due to being squeezed. At this time, the internal first spring 9 and second spring 10 are compressed, and the telescopic rod 6 contracts. When the cable is no longer bent, the internal core sleeve 7 and cable core 8 will return to the initial state under the action of the first spring 9 and the second spring 10.

[0024] The outer protective sleeve 1 is mainly prepared from polyurethane, silicone oil, carbon nanotubes, and antioxidant materials, and the mass ratio of polyurethane, silicone oil, carbon nanotubes, and antioxidant is 10:2:1:3. The antioxidant is dilauryl thiodipropionate;

[0025] The main purpose of adding silicone oil and carbon nanotubes to polyurethane is to improve the oil resistance and mechanical strength of the outer protective sleeve 1. Because robots often need to add lubricating oil during operation, the use of silicone oil will form a protective film on the surface of polyurethane to achieve oil resistance. In addition, carbon nanotubes can also improve the mechanical strength of the outer protective sleeve 1.

[0026] The armor 2 is made of cross-woven galvanized steel wires and stainless steel wires. The insulating sleeve 3 is made of natural rubber. The inner protective sleeve 4, support ring 5, and core sleeve 7 are all made of polyurethane materials.

[0027] A plurality of support rings 5 are provided and are equidistantly arranged on the inner wall of the inner protective sleeve 4. A plurality of telescopic rods 6, first springs 9 and second springs 10 are provided, and the telescopic rods 6, first springs 9 and second springs 10 are correspondingly arranged with the support rings 5.

[0028] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The bending-resistant, flexible and tear-resistant soft cable for robots is characterized by: The invention comprises an outer protective sleeve (1), the inner wall of the outer protective sleeve (1) is fixedly connected to an armor (2), the inner wall of the armor (2) is fixedly connected to an insulating sleeve (3), the inner wall of the insulating sleeve (3) is fixedly connected to an inner protective sleeve (4), the inner wall of the inner protective sleeve (4) is fixedly connected to a support ring (5), a plurality of core sleeves (7) are arranged inside the support ring (5), a cable core (8) is fixedly connected inside each core sleeve (7), a telescopic rod (6) is fixedly connected between the core sleeve (7) and the inner wall of the support ring (5), a first spring (9) is sleeved on the circumferential surface of the telescopic rod (6), and two ends of the first spring (9) are respectively fixedly connected to the outer wall of the core sleeve (7) and the inner wall of the support ring (5), a second spring (10) is fixedly connected between two adjacent core sleeves (7), and the interior of the support ring (5) is a cavity.

2. The bending-resistant, flexible and tear-resistant soft cable for robots according to claim 1, characterized in that: The outer protective sleeve (1) is mainly made of polyurethane, silicone oil, carbon nanotubes and antioxidant materials, and the mass ratio of polyurethane, silicone oil, carbon nanotubes and antioxidant is 10:2:1:3, and the antioxidant is dilauryl thiodipropionate.

3. The bending-resistant, flexible and tear-resistant soft cable for robots according to claim 1, characterized in that: The armor (2) is made of galvanized steel wire and stainless steel wire cross-woven, and the insulating sleeve (3) is made of natural rubber.

4. The bending-resistant, flexible and tear-resistant soft cable for robots according to claim 1, characterized in that: The inner protective sleeve (4), the supporting ring (5) and the core sleeve (7) are all made of polyurethane material.

5. The bending-resistant, flexible and tear-resistant soft cable for robots according to claim 1, characterized in that: The supporting rings (5) are provided in plurality and are arranged at equal distances on the inner wall of the inner protective sleeve (4).

6. The bending-resistant, flexible and tear-resistant soft cable for robots according to claim 1, characterized in that: The telescopic rod (6), the first spring (9) and the second spring (10) are provided in plural numbers, and the telescopic rod (6), the first spring (9) and the second spring (10) are all provided corresponding to the support ring (5).

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