Drag chain cable for shielding control loop for ultra-low noise robot

Abstract

The invention relates to the technical field of drag chain cables, and provides a drag chain cable for a shielding control loop for an ultra-low-noise robot, and the drag chain cable comprises a plurality of cable main bodies and a splicing mechanism for splicing the two adjacent cable main bodies. The wave-shaped elastic supporting piece and the buffering heat transfer cavity are used for providing good buffering space and buffering support for the bent buffering heat conduction assembly, the abrasion-resistant layer, the corrosion-resistant layer and other components. The heat conduction silica gel supporting sleeve with the triangular section can provide a displaceable included angle for the guide core, and extrusion damage to the guide core is avoided. The heat generated by the guide core can be discharged to the heat-conducting silica gel outer core through the micropores, and the heat collected at the inner side of the buffer cavity can be conducted to the inner side of the buffer heat transfer cavity by utilizing the good heat-conducting property of the heat-conducting silica gel outer core, so that the heat is dispersed, and the loss of the heat to the guide core is reduced. Through the splicing mechanism, the relative position of the second connecting strip and the first connecting strip can be kept stable, and the stability of connection between two adjacent cable main bodies is improved.

Description

Technical Field

[0001] This invention relates to the field of drag chain cable technology, and more specifically, to a drag chain cable for a shielded control circuit of an ultra-low noise robot. Background Technology

[0002] In applications where equipment units need to move back and forth, cables are often placed in cable chains to prevent tangling, wear, pulling, snagging, and scattering. This provides protection for the cables, and the cables can also move back and forth with the cable chain. These highly flexible, specialized cables that can move with the cable chain without easily wearing out are called cable chain cables. Cable chain cables are mainly used in: industrial electronic systems, shielded control circuits for ultra-low noise robots, CNC machine tools, and the metallurgical industry, among others.

[0003] In the shielded control circuit of ultra-low noise robots, due to the frequent use of the machine, the supporting cables often need to move at high speeds and withstand large tensile forces and bending deformations. Traditional drag chain cables typically experience various damage and failures after about six months of use, affecting their usability. Furthermore, drag chain cables are usually secured to the drag chain with straps to prevent swaying. However, the outer surface of the drag chain cable is relatively smooth, and the straps may slip during securing, leading to problems such as the cable moving haphazardly within the drag chain and becoming entangled, resulting in insufficient stability and a reduced lifespan.

[0004] In view of this, the present invention proposes a drag chain cable for a shielded control circuit of an ultra-low noise robot. Summary of the Invention

[0005] This invention proposes a drag chain cable for shielded control circuits of ultra-low noise robots, which solves the problems of scattered installation, insufficient stability during operation, and short service life of existing drag chain cables in related technologies.

[0006] The technical solution of the present invention is as follows: a drag chain cable for a shielded control circuit of an ultra-low noise robot, comprising: a plurality of cable bodies and a splicing mechanism for splicing two adjacent cable bodies;

[0007] The cable body includes a wear-resistant layer, and a PP rope core is provided at the center of the wear-resistant layer. Several conductor cores are arranged in a ring array on the outer side of the PP rope core. An insulation layer is sleeved on the outer wall of each conductor core. A buffer heat conduction component is sleeved on the outer periphery of the PP rope core for limiting the installation of the conductor cores and dissipating the heat generated by the conductor cores during operation.

[0008] An anti-aging layer is provided between the wear-resistant layer and the buffer heat-conducting component, and a buffer heat transfer cavity is formed between the anti-aging layer and the buffer heat-conducting component. An elastic support is provided inside the buffer heat transfer cavity, and the inner wall of the anti-aging layer is coated with a heat-conducting coating.

[0009] The splicing mechanism includes a first connecting strip and a second connecting strip. The first connecting strip and the second connecting strip are respectively disposed on the outer walls of two adjacent wear-resistant layers. A slide bar is fixedly connected to the outer wall of the second connecting strip near the first connecting strip. A slide rail is provided inside the first connecting strip for the slide bar to slide. One end of the slide rail is open and the other end is closed. A limit insertion hole is provided inside the slide rail near the closed end. A transmission cavity is provided inside one end of the second connecting strip. A limit insertion post that cooperates with the limit insertion hole is provided inside the transmission cavity. A transmission mechanism that drives the limit insertion post is provided inside the transmission cavity.

[0010] Preferably, the limiting post extends out of the outer wall of the slide bar near the first connecting bar, and the limiting post is slidably connected to the slide bar.

[0011] Preferably, the first connecting strip, the second connecting strip, and the slide strip are all made of rubber, and the first connecting strip and the second connecting strip are both bonded to the outer wall of the wear-resistant layer with adhesive.

[0012] Preferably, the transmission mechanism includes two fixed blocks respectively fixed to the top and bottom of the transmission cavity, two telescopic rods are symmetrically arranged between the two fixed blocks, and a connecting seat is fixed between the opposing inner walls of the two fixed blocks, and a connecting rod is hinged to the inner side of each of the two connecting seats.

[0013] Preferably, a U-shaped frame is fixed to one end of the limiting plug located inside the transmission cavity, and a return spring is connected between the end of the U-shaped frame away from the limiting plug and the inner wall of the transmission cavity. A rotating shaft is provided inside the U-shaped frame, and the ends of the two connecting rods away from the fixed block are rotatably sleeved on the outer wall of the rotating shaft.

[0014] Preferably, the telescopic rod includes an outer cylinder and an inner rod, the outer cylinder and the inner rod are respectively fixed to the outer walls of two fixed blocks, and the inner rod extends into the interior of the outer cylinder and is slidably connected thereto. A support spring is connected between the inner rod and the outer cylinder.

[0015] Preferably, the buffer thermal conductive assembly includes a thermally conductive silicone outer core sleeved on the outer wall of the PP rope inner core. A buffer cavity, corresponding to the number of conductive cores, is formed inside the thermally conductive silicone outer core. The buffer cavity is triangular, and a thermally conductive silicone support sleeve is fitted onto the inner wall of the buffer cavity. All three inner walls of the thermally conductive silicone support sleeve are in contact with the insulating layer, and micropores are uniformly formed inside the thermally conductive silicone support sleeve.

[0016] Preferably, the elastic support is wave-shaped and is slidably clamped between the anti-aging layer and the thermally conductive silicone outer core.

[0017] Preferably, the elastic support is made of polyurethane rubber.

[0018] Preferably, the wear-resistant layer is made of an oxygen-based anti-corrosion and wear-resistant material, and a corrosion-resistant layer is provided between the wear-resistant layer and the anti-aging layer, the corrosion-resistant layer being made of polytetrafluoroethylene.

[0019] The working principle and beneficial effects of this invention are as follows:

[0020] 1. In this invention, an elastic support made of polyurethane rubber is used to support the wear-resistant layer, corrosion-resistant layer and anti-aging layer. Polyurethane rubber has excellent oil resistance, wear resistance, aging resistance and tear resistance. When the cable body moves back and forth and bends with the drag chain, it will squeeze the elastic support. Since the elastic support is slidably clamped between the thermally conductive silicone outer core and the anti-aging layer, the wave-shaped elastic support can undergo compression deformation when squeezed. In addition, with the setting of the buffer heat transfer cavity, it provides a good buffer space and buffer support for the bent buffer heat conduction component, wear-resistant layer and corrosion-resistant layer.

[0021] 2. In this invention, the cable body possesses excellent pressure-resistant buffering performance through the arrangement of elastic support components and thermally conductive buffering components. When the cable body is under pressure, the elastic support components first buffer and offset the pressure. Then, the thermally conductive silicone outer core deforms under pressure, causing the thermally conductive silicone support sleeve to elastically deform. The thermally conductive silicone support sleeve compresses the conductor core, and the triangular cross-section of the thermally conductive silicone support sleeve provides a displaceable angle for the conductor core when it is under pressure, preventing damage to the conductor core. When the pressure is removed, the excellent elasticity of the thermally conductive silicone outer core and the thermally conductive silicone support sleeve allows the conductor core to return to the center of the buffer cavity, demonstrating excellent practical performance.

[0022] 3. In this invention, when the cable body is bent, some of the micropores on the thermally conductive silicone support sleeve will open, allowing the heat generated by the conductor core after prolonged operation to be discharged to the thermally conductive silicone outer core through the micropores. Utilizing the excellent thermal conductivity of the thermally conductive silicone outer core, the heat accumulated inside the buffer cavity can be conducted to the inside of the buffer heat transfer cavity, thus dispersing the heat and reducing heat loss to the conductor core. Meanwhile, the thermally conductive coating on the inner wall of the anti-aging layer effectively conducts the heat inside the buffer heat transfer cavity to the anti-aging layer, and then, through the corrosion-resistant layer and wear-resistant layer, conducts the heat to the outside for heat dissipation.

[0023] 4. In this invention, a splicing mechanism is provided between two adjacent cable bodies. By pressing the top and bottom ends of the slide bar where the transmission cavity is located, the two fixed blocks are brought closer together, the included angle between the two connecting rods is reduced, and the U-shaped frame drives the limiting pin to slide into the transmission cavity. At this time, the slide bar can smoothly slide into the slide track. When the end of the slide bar abuts against the closed end of the slide track, under the action of the return spring and the support spring, the limiting pin can penetrate the outer wall of the slide bar and extend into the limiting hole, constraining and limiting the slide bar inside the slide track, so that the relative position of the second connecting bar and the first connecting bar remains stable, improving the stability of the connection between two adjacent cable bodies. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a schematic diagram of the assembly structure of a drag chain cable for a shielded control circuit of an ultra-low noise robot proposed in this invention;

[0026] Figure 2 This is a schematic diagram of the main structure of the cable proposed in this invention;

[0027] Figure 3 This is a schematic diagram of the structure of the buffer heat conduction component proposed in this invention;

[0028] Figure 4 This is a schematic diagram of the assembly structure of the splicing mechanism proposed in this invention;

[0029] Figure 5 This is a partial cross-sectional view of the splicing mechanism proposed in this invention;

[0030] Figure 6 for Figure 5 Enlarged structural diagram at point A in the middle;

[0031] Figure 7 This is a schematic diagram of the telescopic rod structure proposed in this invention;

[0032] In the picture:

[0033] 1. Cable body; 11. Buffer and heat-conducting assembly; 111. Thermally conductive silicone outer core; 112. Buffer cavity; 113. Thermally conductive silicone support sleeve; 114. Micropores; 12. Wear-resistant layer; 13. Corrosion-resistant layer; 14. Anti-aging layer; 141. Thermally conductive coating; 15. Buffer heat transfer cavity; 16. Elastic support component; 17. Conductor core; 18. Insulation layer; 19. PP rope inner core;

[0034] 2. Splicing mechanism; 21. First connecting strip; 22. Slide rail; 23. Second connecting strip; 24. Slide bar; 25. Limiting insertion hole; 26. Transmission cavity; 27. Transmission mechanism; 271. Return spring; 272. U-shaped frame; 273. Connecting seat; 274. Fixing block; 275. Rotating shaft; 276. Telescopic rod; 277. Connecting rod; 2761. Outer cylinder; 2762. Support spring; 2763. Inner rod; 28. Limiting insertion post. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] Please see Figure 1 , Figure 2 as well as Figure 3 A drag chain cable for a shielded control circuit of an ultra-low noise robot includes several cable bodies 1. Specifically, the cable body 1 includes a wear-resistant layer 12, a PP rope inner core 19 is disposed at the center of the wear-resistant layer 12, and several guide cores 17 are arranged in a ring array on the outer side of the PP rope inner core 19. The outer wall of each guide core 17 is covered with an insulation layer 18, and a buffer heat-conducting component 11 is sleeved on the outer periphery of the PP rope inner core 19 for limiting the installation of the several guide cores 17 and dissipating the heat generated by the guide cores 17 during operation.

[0038] Furthermore, an anti-aging layer 14 is provided between the wear-resistant layer 12 and the buffer heat conduction component 11, and a buffer heat transfer cavity 15 is formed between the anti-aging layer 14 and the buffer heat conduction component 11. An elastic support member 16 is provided inside the buffer heat transfer cavity 15, and the inner wall of the anti-aging layer 14 is coated with a heat conduction coating 141.

[0039] Furthermore, the buffer heat-conducting assembly 11 includes a heat-conducting silicone outer core 111 sleeved on the outer wall of the PP rope inner core 19. Inside the heat-conducting silicone outer core 111, there are buffer cavities 112 that are the same number as the cores 17 and correspond one-to-one. The buffer cavities 112 are triangular cavities, and the inner wall of the buffer cavity 112 is sleeved with a heat-conducting silicone support sleeve 113. All three inner walls of the heat-conducting silicone support sleeve 113 are in contact with the insulating layer 18. Micropores 114 are uniformly opened inside the heat-conducting silicone support sleeve 113.

[0040] It should be noted that the elastic support 16 is made of polyurethane rubber and is corrugated. The elastic support 16 is slidably clamped between the anti-aging layer 14 and the thermally conductive silicone outer core 111. The wear-resistant layer 12 is made of an oxygen-based anti-corrosion and wear-resistant material. A corrosion-resistant layer 13 is sleeved between the wear-resistant layer 12 and the anti-aging layer 14. The corrosion-resistant layer 13 is made of polytetrafluoroethylene (PTFE). PTFE has excellent corrosion resistance, electrical insulation, and good anti-aging resistance, which can effectively enhance the corrosion resistance, insulation, and anti-aging ability of the cable body 1, and improve the overall comprehensive performance.

[0041] In this embodiment, an elastic support 16 made of polyurethane rubber is used to support the wear-resistant layer 12, the corrosion-resistant layer 13, and the anti-aging layer 14. Polyurethane rubber has excellent oil resistance, wear resistance, aging resistance, and tear resistance. When the cable body 1 moves back and forth and bends with the cable chain, it will squeeze the elastic support 16. Since the elastic support 16 is slidably clamped between the thermally conductive silicone outer core 111 and the anti-aging layer 14, the wavy elastic support 16 can undergo compression deformation when squeezed. In addition, with the setting of the buffer heat transfer cavity 15, it provides a good buffer space and buffer support for the bent components such as the buffer heat conduction component 11, the wear-resistant layer 12, and the corrosion-resistant layer 13.

[0042] In this embodiment, the cable body 1 has good pressure-resistant buffering performance due to the arrangement of the elastic support 16 and the buffer heat-conducting assembly 11. When the cable body 1 is under pressure, the elastic support 16 first buffers and offsets the pressure. Then, the thermally conductive silicone outer core 111 deforms under pressure, causing the thermally conductive silicone support sleeve 113 to undergo elastic deformation. The thermally conductive silicone support sleeve 113 compresses the conductor core 17. The triangular cross-section of the thermally conductive silicone support sleeve 113 can provide a displaceable angle for the conductor core 17 when it is under pressure, avoiding compression damage to the conductor core 17. When the pressure is removed, the good elasticity of the thermally conductive silicone outer core 111 and the thermally conductive silicone support sleeve 113 allows the conductor core 17 to return to the center of the buffer cavity 112.

[0043] In this embodiment, when the cable body 1 is bent, some of the micro-holes 114 on the thermally conductive silicone support sleeve 113 will open, allowing the heat generated by the conductor core 17 after prolonged operation to be discharged to the thermally conductive silicone outer core 111 through the micro-holes 114. Utilizing the good thermal conductivity of the thermally conductive silicone outer core 111, the heat collected inside the buffer cavity 112 can be conducted to the inside of the buffer heat transfer cavity 15, thus dispersing the heat and reducing heat loss to the conductor core 17. The thermally conductive coating 141 coated on the inner wall of the anti-aging layer 14 can effectively conduct the heat inside the buffer heat transfer cavity 15 to the anti-aging layer 14, and then conduct the heat to the outside for heat dissipation through the corrosion-resistant layer 13 and the wear-resistant layer 12.

[0044] Example 2

[0045] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 as well as Figure 7 A drag chain cable for a shielded control circuit of an ultra-low noise robot includes a splicing mechanism 2 for splicing two adjacent cable bodies 1. Specifically, the splicing mechanism 2 includes a first connecting strip 21 and a second connecting strip 23, which are respectively disposed on the outer walls of two adjacent wear-resistant layers 12. A slider 24 is fixedly connected to the outer wall of the second connecting strip 23 near the first connecting strip 21. A slide rail 22 for sliding the slider 24 is provided inside the first connecting strip 21. One end of the slide rail 22 is open and the other end is closed. A limit insertion hole 25 is provided inside the slide rail 22 near the closed end. A transmission cavity 26 is provided inside one end of the second connecting strip 23. A limit insertion post 28 that cooperates with the limit insertion hole 25 is provided inside the transmission cavity 26. A transmission mechanism 27 that drives the limit insertion post 28 is provided inside the transmission cavity 26.

[0046] Furthermore, the limiting post 28 extends out onto the outer wall of the slide bar 24 near the first connecting bar 21, and the limiting post 28 and the slide bar 24 are slidably connected. The first connecting bar 21, the second connecting bar 23, and the slide bar 24 are all made of rubber, and the first connecting bar 21 and the second connecting bar 23 are both bonded and fixed to the outer wall of the wear-resistant layer 12 with adhesive.

[0047] Furthermore, the transmission mechanism 27 includes two fixed blocks 274 respectively fixed to the top and bottom ends of the transmission cavity 26. Two telescopic rods 276 are symmetrically arranged between the two fixed blocks 274, and connecting seats 273 are fixed between the opposing inner walls of the two fixed blocks 274. Connecting rods 277 are hinged to the inner sides of the two connecting seats 273. A U-shaped frame 272 is fixed to one end of the limiting pin 28 located inside the transmission cavity 26. A return spring 271 is connected between the end of the U-shaped frame 272 away from the limiting pin 28 and the inner wall of the transmission cavity 26. A rotating shaft 275 is arranged inside the U-shaped frame 272, and the ends of the two connecting rods 277 away from the fixed blocks 274 are rotatably sleeved on the outer wall of the rotating shaft 275.

[0048] In addition, the telescopic rod 276 includes an outer cylinder 2761 and an inner rod 2763. The outer cylinder 2761 and the inner rod 2763 are respectively fixed to the outer walls of two fixed blocks 274, and the inner rod 2763 extends into the interior of the outer cylinder 2761 and is slidably connected thereto. A support spring 2762 is connected between the inner rod 2763 and the outer cylinder 2761.

[0049] In this embodiment, when splicing two adjacent cable bodies 1, the slide bar 24 on the outer wall of the second connecting strip 23 is inserted from one end of the opening of the slide channel 22, and the slide bar 24 is slid along the inner side of the slide channel 22 until the end of the slide bar 24 abuts against the closed end of the slide channel 22. During the process of inserting the slide bar 24 into one end of the opening of the slide channel 22, the top and bottom ends of the slide bar 24 at the opening of the transmission cavity 26 are pressed in advance, so that the two fixing blocks 274 are brought closer to each other, so that the inner rod 2763 slides into the outer cylinder 2761, compressing the support spring 2762. At this time, the included angle between the two connecting rods 277 decreases, and the U-shaped frame 272 drives the limiting pin 28 to slide into the inner side of the transmission cavity 26, compressing the return spring 271. Since the limiting pin 28 retracts into the transmission cavity 26, the slide bar 24 can smoothly slide into the slide channel 22.

[0050] When the end of the slide bar 24 abuts against the closed end of the slide rail 22, the central axis of the limiting pin 28 coincides with the central axis of the limiting hole 25. At this time, under the action of the return spring 271, the U-shaped frame 272 is pushed forward. Under the action of the support spring 2762, the inner rod 2763 slides out to the outside of the outer cylinder 2761, causing the two fixing blocks 274 to move away from each other, increasing the angle between the two connecting rods 277, and causing the U-shaped frame 272 to push the limiting pin 28, so that the limiting pin 28 penetrates the outer wall of the slide bar 24 and extends into the interior of the limiting hole 25, constraining and limiting the slide bar 24 inside the slide rail 22, so that the relative position of the second connecting bar 23 and the first connecting bar 21 remains stable, improving the stability of the connection between the two adjacent cable bodies 1.

[0051] When it is necessary to disassemble and replace one of the cable bodies 1 for maintenance, the top and bottom ends of the slide bar 24 with the transmission cavity 26 are pressed to bring the two fixed blocks 274 closer to each other, so that the inner rod 2763 slides into the outer cylinder 2761, reducing the included angle between the two connecting rods 277. The U-shaped frame 272 drives the limiting pin 28 to slide into the transmission cavity 26, and the limiting pin 28 is pulled out from the limiting hole 25. At this time, the slide bar 24 can slide inside the slide rail 22.

[0052] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drag chain cable for a shielded control circuit in an ultra-low noise robot, characterized in that, include: Several cable bodies (1) and splicing mechanism (2) for splicing two adjacent cable bodies (1); The cable body (1) includes a wear-resistant layer (12), and a PP rope core (19) is provided at the center of the wear-resistant layer (12). A number of conductor cores (17) are arranged in a ring array on the outside of the PP rope core (19). An insulation layer (18) is sleeved on the outer wall of each conductor core (17). A buffer heat conduction component (11) is sleeved on the outer periphery of the PP rope core (19) for limiting the installation of the conductor cores (17) and dissipating the heat generated by the conductor cores (17) during operation. An anti-aging layer (14) is provided between the wear-resistant layer (12) and the buffer heat conduction component (11), and a buffer heat transfer cavity (15) is formed between the anti-aging layer (14) and the buffer heat conduction component (11). An elastic support member (16) is provided inside the buffer heat transfer cavity (15), and a heat-conducting coating (141) is coated on the inner wall of the anti-aging layer (14). The splicing mechanism (2) includes a first connecting strip (21) and a second connecting strip (23). The first connecting strip (21) and the second connecting strip (23) are respectively disposed on the outer walls of two adjacent wear-resistant layers (12). A slide strip (24) is fixedly connected to the outer wall of the second connecting strip (23) near the first connecting strip (21). A slide track (22) for the slide strip (24) to slide is provided inside the first connecting strip (21). One end of the slide track (22) is open and the other end is closed. A limit insertion hole (25) is provided inside the slide track (22) near the closed end. A transmission cavity (26) is provided inside one end of the second connecting strip (23). A limit insertion post (28) that cooperates with the limit insertion hole (25) is provided inside the transmission cavity (26). A transmission mechanism (27) for driving the limit insertion post (28) is provided inside the transmission cavity (26).

2. The drag chain cable for a shielded control circuit in an ultra-low noise robot according to claim 1, characterized in that, The limiting post (28) extends out of the outer wall of the slide bar (24) near the first connecting bar (21), and the limiting post (28) and the slide bar (24) are slidably connected.

3. The drag chain cable for a shielded control circuit in an ultra-low noise robot according to claim 1, characterized in that, The first connecting strip (21), the second connecting strip (23) and the slide strip (24) are all made of rubber, and the first connecting strip (21) and the second connecting strip (23) are both bonded to the outer wall of the wear-resistant layer (12) by adhesive.

4. The drag chain cable for a shielded control circuit of an ultra-low noise robot according to claim 1, characterized in that, The transmission mechanism (27) includes two fixed blocks (274) respectively fixed to the top and bottom of the transmission cavity (26). Two telescopic rods (276) are symmetrically arranged between the two fixed blocks (274), and connecting seats (273) are fixed between the opposing inner walls of the two fixed blocks (274). Connecting rods (277) are hinged to the inner sides of the two connecting seats (273).

5. The drag chain cable for a shielded control circuit of an ultra-low noise robot according to claim 4, characterized in that, The limiting pin (28) is fixed to a U-shaped frame (272) at one end inside the transmission cavity (26). A return spring (271) is connected between the end of the U-shaped frame (272) away from the limiting pin (28) and the inner wall of the transmission cavity (26). A rotating shaft (275) is provided inside the U-shaped frame (272). The ends of the two connecting rods (277) away from the fixed block (274) are rotatably sleeved on the outer wall of the rotating shaft (275).

6. The drag chain cable for a shielded control circuit of an ultra-low noise robot according to claim 4, characterized in that, The telescopic rod (276) includes an outer cylinder (2761) and an inner rod (2763). The outer cylinder (2761) and the inner rod (2763) are respectively fixed to the outer walls of two fixed blocks (274), and the inner rod (2763) extends into the outer cylinder (2761) and is slidably connected to it. A support spring (2762) is connected between the inner rod (2763) and the outer cylinder (2761).

7. The drag chain cable for a shielded control circuit of an ultra-low noise robot according to claim 1, characterized in that, The buffer heat-conducting assembly (11) includes a heat-conducting silicone outer core (111) sleeved on the outer wall of the PP rope inner core (19). A buffer cavity (112) is opened inside the heat-conducting silicone outer core (111) in the same number and corresponding to the core (17). The buffer cavity (112) is a triangular cavity, and a heat-conducting silicone support sleeve (113) is sleeved on the inner wall of the buffer cavity (112). The three inner walls of the heat-conducting silicone support sleeve (113) are in contact with the insulating layer (18). Micropores (114) are uniformly opened inside the heat-conducting silicone support sleeve (113).

8. The drag chain cable for a shielded control circuit of an ultra-low noise robot according to claim 1, characterized in that, The elastic support (16) is wave-shaped and is slidably clamped between the anti-aging layer (14) and the thermally conductive silicone outer core (111).

9. A drag chain cable for a shielded control circuit in an ultra-low noise robot according to claim 8, characterized in that, The elastic support (16) is made of polyurethane rubber.

10. The drag chain cable for a shielded control circuit in an ultra-low noise robot according to claim 1, characterized in that, The wear-resistant layer (12) is made of an oxygen-based anti-corrosion wear-resistant material. A corrosion-resistant layer (13) is provided between the wear-resistant layer (12) and the anti-aging layer (14). The corrosion-resistant layer (13) is made of polytetrafluoroethylene material.

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