Line protection device of industrial robot

Abstract

The invention discloses a line protection device of an industrial robot, and belongs to the technical field of line protection of industrial robots. A line protection device of an industrial robot comprises an industrial robot body, a large arm is arranged in the middle of the industrial robot body, a protection box is fixedly installed on the surface of the large arm, a plurality of fixing bases are fixedly installed on the inner walls of the two sides of the protection box, and the fixing bases on the two sides of the inner walls are arranged in a staggered mode. And an open slot is formed in any one of the fixed seats. According to the line protection device of the industrial robot, compared with a traditional line body protection device, the positions of the rollers and the first springs in the protection box can be automatically adjusted along with changes of the line body, dynamic supporting and buffering are provided for the line body, and the risk of friction between the line body and the surface of the industrial robot body is further reduced; therefore, the surface of the circuit body is prevented from being damaged by friction, and the service life of the circuit body is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial robot line protection, and more specifically, to a line protection device for an industrial robot. Background Art

[0002] Industrial robots, as the core equipment of intelligent manufacturing, are applied in automobile manufacturing, electronic manufacturing, logistics and warehousing, medical and health, and machinery manufacturing.

[0003] Chinese Patent Application No. CN201010576840.4 relates to a line protection device for an industrial robot having at least one energy line, which has: a base annular section; a hollow cylindrical section, the diameter of which matches the inner diameter of the tubular component of the industrial robot that rotates about the line protection device; an inner edge rounding section, the rounding radius of which matches the diameter of the energy line; and a radial bearing section for rotatably supporting the line protection device about the rotatable tubular component of the industrial robot.

[0004] The above technical solution realizes the installation of the industrial robot line and the support and protection of the line. However, traditional industrial robot line protection usually adopts two methods. One is to install a corrugated telescopic sleeve on the surface of the line, and the other is to wrap the line with a soft elastic material. To avoid restricting the movement of the robotic arm, some redundant lines need to be reserved during installation. When the robotic arm moves frequently, the reserved lines are prone to displacement and friction with the surface of the robotic arm. Long-term friction will cause the corrugated sleeve or elastic protective layer to wear first, and then damage the line insulation rubber tube, resulting in the exposure of the line to the outside and causing the risk of short circuit or open circuit, greatly shortening the service life of the line. Moreover, traditional flexible protective sleeves are difficult to adapt to multi-directional stretching and twisting under complex movements. The line will twist when attached to the surface of the moving arm and rub against the surface of the moving arm, accelerating the wear of the line. Summary of the Invention

[0005] The purpose of the present invention is to provide a line protection device for an industrial robot to solve the problems raised in the above background art: To achieve the above purpose, the present invention provides the following technical solutions: A circuit protection device for an industrial robot, including the industrial robot body. A large arm is provided in the middle of the industrial robot body. A protection box is fixedly installed on the surface of the large arm. A plurality of fixed seats are fixedly installed on both inner walls of the protection box. The plurality of fixed seats on both inner walls are arranged staggered with each other. A slot is opened inside any one of the fixed seats. A slide plate matching with the slot is slidably connected inside any one of the slots. A rotatable roller is provided at one end of any one of the slide plates. A first spring is elastically connected between the slide plate and the slot. A circuit body is provided on the surface of the industrial robot body. The circuit body passes through the inside of the protection box. The circuit body is in contact with the surface of any one of the rollers. A forearm driver is provided at the top of the industrial robot body. A movable forearm shaft is provided at one end of the forearm driver. A fixed box is fixedly installed on the surface of the forearm driver. A slider matching with the fixed box is slidably connected inside the fixed box. The circuit body passes through the fixed box and the slider, and the circuit body is fixed by the slider.

[0006] By adopting the above technical solution, when the forearm driver drives the forearm shaft to move up and down, the forearm shaft will stretch the circuit body. At this time, the circuit body moves and drives the slider to move inside the fixed box. When the angle of the forearm driver driving the forearm shaft to move up and down increases, the circuit body continues to be stretched. The circuit body inside the protection box is stretched and squeezed by a plurality of staggered rollers. At this time, the rollers are squeezed and drive the slide plate to compress the first spring into the slot. When the forearm shaft returns to the initial state, the slider drives the circuit body to reset under the reset of the second spring. At this time, the rollers and the slide plate support the circuit body to recover under the action of the first spring. Compared with the traditional circuit body protection device, the rollers and the first spring in the protection box can automatically adjust their positions with the change of the circuit body, providing dynamic support and buffering for the circuit body, further reducing the friction risk between the circuit body and the surface of the industrial robot body, and thus avoiding the surface of the circuit body from being damaged by friction and prolonging the service life of the circuit body.

[0007] Preferably, a base is fixedly installed on the bottom surface of the industrial robot body. A rotating seat is rotatably connected to the surface of the base. The inner sides of both ends of the large arm are respectively rotatably connected to the rotating seat and the forearm driver.

[0008] Preferably, one end of the first spring is fixedly connected to the inner wall of the slot, and the other end of the first spring is fixedly connected to the slide plate. The slide plate is slidably connected to the slot through the first spring.

[0009] By adopting the above technical solution, the rollers and the first spring in the protection box can automatically adjust their positions with the stretching change of the circuit body, providing dynamic support and buffering for the circuit body.

[0010] Preferably, a second spring is elastically connected between the fixed box and the slider. One end of the second spring is fixedly connected to the surface of the slider, and the other end of the second spring is fixedly connected to the inner wall of the fixed box. Flared shells communicating with the fixed box are fixedly installed on both ends of the fixed box.

[0011] By adopting the above technical solution, during the process of the circuit body being stretched or reset, the flared shells on both ends of the fixed box will increase the bending arc of the circuit body, avoiding the stress concentration phenomenon caused by sharp bending.

[0012] Preferably, a bottom arc plate is fixedly installed on the inner bottom wall of the protection box, and the circuit body is in contact with the surface of the bottom arc plate. A top arc plate is fixedly installed on the inner top wall of the protection box, and the circuit body is in contact with the surface of the top arc plate.

[0013] By adopting the above technical solution, the design of the top arc plate at the top and the bottom arc plate at the bottom of the protection box will both increase the bending arc of the circuit body. The curvature radius of the circuit body at the bending part becomes larger, avoiding the stress concentration phenomenon caused by sharp bending, and enabling the circuit body to move along a preset arc path in the protection box, reducing the requirement for the reserved length of the circuit body, and avoiding the swinging of the redundant circuit body and the friction with the industrial robot body.

[0014] Preferably, a connecting block is fixedly installed between the fixed box and the forearm driver. Sliding grooves communicating with the fixed box are formed on the top surface and the bottom surface of the fixed box, and matching follower blocks are slidably connected inside the two sliding grooves. The two follower blocks are fixedly connected to the top surface and the bottom surface of the slider.

[0015] By adopting the above technical solution, it is ensured that the slider slides stably in the fixed box.

[0016] Preferably, a fixing ring is arranged on the surface of the forearm shaft. An angle adjusting ring is rotatably arranged above the fixing ring. An outer flared opening and an inner flared opening are fixedly installed on the inner side surface and the outer side surface of the angle adjusting ring respectively.

[0017] By adopting the above technical solution, when the forearm driver operates to rotate the forearm shaft, the forearm shaft will stretch the line body at this time. The movement of the line body will drive the angle adjustment ring to rotate at an angle, reducing the distortion of the line body. At the same time, the movement of the line body drives the slider to move inside the fixed box to stretch the second spring. The line body continues to be stretched, and the line body inside the protection box is stretched and squeezed by a plurality of staggered rollers. At this time, after being squeezed, the rollers drive the slide plate to compress the first spring into the slot. The rollers and the first spring in the protection box can automatically adjust their positions with the stretching change of the line body, providing dynamic support and buffering for the line body. Due to the settings of the outer bell mouth, the angle adjustment ring and the inner bell mouth, it prevents the line body from twisting and rubbing against the surface of the forearm shaft. At the same time, it increases the bending arc of the line body, avoiding the stress concentration phenomenon caused by sharp bending, and further extending the service life of the line body.

[0018] Preferably, a through groove is correspondingly formed on the surface of the angle adjustment ring. The outer bell mouth is communicated with the inner bell mouth through the groove, and the line body passes through the outer bell mouth, the angle adjustment ring and the inner bell mouth.

[0019] Preferably, a fixing rod is arranged between the fixed box and the fixing ring, and the two ends of the fixing rod are fixedly connected to the surface of the fixed box and the surface of the fixing ring.

[0020] Preferably, a follower shaft is arranged between the fixing ring and the angle adjustment ring, and the angle adjustment ring is rotationally connected to the fixing ring through the follower shaft.

[0021] Compared with the prior art, the beneficial effects of the present invention are: 1) When the line protection device of this industrial robot is in use, when the forearm driver drives the forearm shaft to move up and down, the forearm shaft will stretch the line body. At this time, the movement of the line body drives the slider to move inside the fixed box. When the angle of the forearm driver driving the forearm shaft to move up and down increases, the line body continues to be stretched, and the line body inside the protection box is stretched and squeezed by a plurality of staggered rollers. At this time, after being squeezed, the rollers drive the slide plate to compress the first spring into the slot. When the forearm shaft returns to the initial state, the slider resets the line body with the reset of the second spring. At this time, the rollers and the slide plate support the line body again with the first spring. Compared with the traditional line body protection device, the rollers and the first spring in the protection box can automatically adjust their positions with the change of the line body, providing dynamic support and buffering for the line body, further reducing the risk of friction between the line body and the surface of the industrial robot body, and thus avoiding the surface of the line body from being damaged by friction and extending the service life of the line body.

[0022] 2) When the line protection device of this industrial robot is in use, during the process of the line body being stretched or reset, the flared shells, top arc plates, and bottom arc plates on both ends of the fixed box will increase the bending arc of the line body. The curvature radius of the line body at the bending point becomes larger, avoiding the stress concentration phenomenon caused by sharp bending. Moreover, due to the design of the top arc plate at the top of the protection box and the bottom arc plate at the bottom, the line body can move along a preset arc path inside the protection box, reducing the requirement for the reserved length of the line body, avoiding the swing of the redundant line body, and further avoiding the surface of the line body from being damaged by friction, thus further extending the service life of the line body.

[0023] 3) When the line protection device of this industrial robot is in use, when the forearm driver works and the forearm shaft rotates, at this time, the forearm shaft will stretch the line body. The movement of the line body will drive the angle adjustment ring to rotate at an angle, reducing the twist degree of the line body. At the same time, the movement of the line body drives the slider to move inside the fixed box and stretch the second spring. The line body continues to be stretched, and the line body inside the protection box is stretched and squeezed by multiple staggered rollers. At this time, after being squeezed, the rollers drive the skateboard to compress the first spring into the slot. The rollers and the first spring inside the protection box can automatically adjust their positions with the stretching change of the line body, providing dynamic support and buffering for the line body. Due to the settings of the outer flared opening, angle adjustment ring, and inner flared opening, it prevents the line body from twisting and rubbing against the surface of the forearm shaft, and at the same time increases the bending arc of the line body, avoiding the stress concentration phenomenon caused by sharp bending, and further extending the service life of the line body. Description of the Drawings

[0024] Figure 1 Schematic diagram of the overall structure of the industrial robot body of the present invention; Figure 2 Schematic diagram of the position structure of the base and the rotating seat of the present invention; Figure 3 Schematic diagram of the position structure of the large arm and the protection box of the present invention; Figure 4 Schematic diagram of the position structure of the line body and the protection box of the present invention; Figure 5 Schematic diagram of the position structure of the skateboard and the rollers of the present invention; Figure 6 Schematic diagram of the position structure of the forearm shaft and the fixed box of the present invention; Figure 7 Schematic diagram of the position structure of the fixed ring and the angle adjustment ring of the present invention; Figure 8 Schematic diagram of the position structure of the fixed box and the slider of the present invention; Figure 9 Schematic diagram of the position structure of the fixed box and the flared shell of the present invention; Figure 10 Schematic diagram of the forearm driver and fixed box position structure of the present invention.

[0025] Description of reference numerals in the figure: 1. Industrial robot body; 2. Base; 3. Rotating seat; 4. Big arm; 5. Forearm driver; 6. Forearm shaft; 7. Protection box; 8. Fixed seat; 9. Groove; 10. Slide plate; 11. Roller; 12. First spring; 13. Circuit body; 14. Fixed box; 15. Slide block; 16. Second spring; 17. Flared shell; 18. Bottom arc plate; 19. Top arc plate; 20. Connecting block; 21. Chute; 22. Follow-up block; 23. Fixed ring; 24. Follow-up shaft; 25. Angle adjustment ring; 26. Outer flared opening; 27. Inner flared opening; 28. Fixed rod. Specific implementation mode

[0026] Example 1: Please refer to Figure 1 - Figure 10, A circuit protection device for an industrial robot, including an industrial robot body 1. The industrial robot body 1 is a conventional industrial robot body 1 in the prior art. Controlling the industrial robot body 1 to work at multiple angles is prior art and can be achieved by those skilled in the art for installation and controlled by an external control device. A large arm 4 is provided in the middle of the industrial robot body 1. The large arm 4 is a conventional movable arm in the prior art. A protection box 7 is fixedly installed on the surface of the large arm 4. The circuit body 13 is arranged in a serpentine shape inside the protection box 7, reducing the requirement for the reserved length of the circuit body 13. A plurality of fixing seats 8 are fixedly installed on both inner walls of the protection box 7. The plurality of fixing seats 8 on both inner walls are arranged staggered with each other. A slot 9 is opened inside any one of the fixing seats 8. A slide plate 10 matching it is slidably connected inside any one of the slots 9. A rotatable roller 11 is provided at one end of any one of the slide plates 10. The contact area between the circuit body 13 and the roller 11 is more uniform, and the rotation of the roller 11 is smoother, reducing the risk of the circuit body 13 getting stuck. A first spring 12 is elastically connected between the slide plate 10 and the slot 9. A circuit body 13 is provided on the surface of the industrial robot body 1. The circuit body 13 is a conventional circuit body 1 with a protective rubber tube in the prior art. The rollers 11 and the first spring 12 in the protection box 7 can automatically adjust their positions with the stretching change of the circuit body 13, providing dynamic support and buffering for the circuit body 13, and further reducing the friction risk of the circuit body 13. The circuit body 13 passes through the inside of the protection box 7 and contacts the surface of any one of the rollers 11. A forearm driver 5 is provided at the top of the industrial robot body 1. The forearm driver 5 is a conventional forearm driver 5 in the prior art. The forearm driver 5 provides power for the movement of the forearm shaft 6. An active forearm shaft 6 is provided at one end of the forearm driver 5. A fixing box 14 is fixedly installed on the surface of the forearm driver 5. A slider 15 matching it is slidably connected inside the fixing box 14. The circuit body 13 passes through the fixing box 14 and the slider 15, and the circuit body 13 is fixed by the slider 15. When the forearm driver 5 drives the forearm shaft 6 to move up and down, the forearm shaft 6 will stretch the circuit body 13. At this time, the movement of the circuit body 13 drives the slider 15 to move inside the fixing box 14. When the angle of the forearm driver 5 driving the forearm shaft 6 to move up and down increases, the circuit body 13 is continuously stretched. The circuit body 13 inside the protection box 7 is stretched and squeezed by a plurality of staggered rollers 11. At this time, after being squeezed, the rollers 11 drive the slide plate 10 to compress the first spring 12 into the slot 9. When the forearm shaft 6 returns to its initial state, the slider 15 drives the circuit body 13 to reset under the reset of the second spring 16. At this time, the rollers 11 and the slide plate 10 restore the support for the circuit body 13 by the first spring 12. Compared with the traditional circuit body 13 protection device, the rollers 11 and the first spring 12 in the protection box 7 can automatically adjust their positions with the change of the circuit body 13, providing dynamic support and buffering for the circuit body 13, and further reducing the friction risk between the circuit body 13 and the surface of the industrial robot body 1.Furthermore, it avoids the surface of the circuit body 13 from being damaged by friction, and prolongs the service life of the circuit body 13.

[0027] A base 2 is fixedly installed on the bottom surface of the industrial robot body 1. A rotating seat 3 is rotatably connected to the surface of the base 2. The inner sides of both ends of the large arm 4 are respectively rotatably connected to the rotating seat 3 and the forearm driver 5. The base 2, the rotating seat 3, the large arm 4, the forearm driver 5 and the forearm shaft 6 are components of the industrial robot body 1 in the prior art, and those skilled in the art can assemble them into the industrial robot body 1 according to these parts, and no detailed explanation and description will be given here.

[0028] One end of the first spring 12 is fixedly connected to the inner wall of the slot 9, and the other end of the first spring 12 is fixedly connected to the slide plate 10. The slide plate 10 is slidably connected to the slot 9 through the first spring 12. The rollers 11 and the first spring 12 in the protection box 7 can automatically adjust their positions as the circuit body 13 stretches and changes, providing dynamic support and buffering for the circuit body 13.

[0029] A second spring 16 is elastically connected between the fixed box 14 and the slider 15. One end of the second spring 16 is fixedly connected to the surface of the slider 15, and the other end of the second spring 16 is fixedly connected to the inner wall of the fixed box 14. Bellmouth shells 17 communicated with the fixed box 14 are fixedly installed on both ends of the fixed box 14. During the process of the circuit body 13 being stretched or reset, the bellmouth shells 17 on both ends of the fixed box 14 will increase the bending arc of the circuit body 13, avoiding the stress concentration phenomenon caused by sharp bending.

[0030] A bottom arc plate 18 is fixedly installed on the bottom inner wall of the protection box 7, and the circuit body 13 contacts the surface of the bottom arc plate 18. A top arc plate 19 is fixedly installed on the top inner wall of the protection box 7, and the circuit body 13 contacts the surface of the top arc plate 19. The designs of the top arc plate 19 at the top and the bottom arc plate 18 at the bottom of the protection box 7 will both increase the bending arc of the circuit body 13, the curvature radius at the bending part of the circuit body 13 becomes larger, avoiding the stress concentration phenomenon caused by sharp bending, and enabling the circuit body 13 to move along a preset arc path in the protection box 7, reducing the requirement for the reserved length of the circuit body 13, and avoiding the redundant circuit body 13 from swinging and rubbing against the industrial robot body 1.

[0031] A connecting block 20 is fixedly installed between the fixed box 14 and the forearm driver 5. Slots 21 communicated with the fixed box 14 are opened on the top and bottom surfaces of the fixed box 14. Follow-up blocks 22 matching with the slots 21 are slidably connected inside the two slots 21. The two follow-up blocks 22 are fixedly connected to the top and bottom surfaces of the slider 15 to ensure the stable sliding of the slider 15 in the fixed box 14.

[0032] Usage steps of the present invention: When the line protection device of this industrial robot is in use, when the line body 13 is installed on the surface of the industrial robot body 1, first, one end of the line body 13 is wound around the surface of the bottom arc plate 18 and passes through a plurality of mutually staggered rollers 11. The surface of the line body 13 contacts the surface of the rollers 11, and then it bypasses the top arc plate 19. Subsequently, the line body 13 passes through the bell mouth shell 17 on the surface of one end of the fixed box 14, then passes through the fixed box 14 and the slider 15 and exits from the bell mouth shell 17 on the surface of the other end of the fixed box 14, and then is connected to the surface of the industrial robot body 1 (the installation of the line body 13 on the surface of the industrial robot body 1, and the line body 13 being the wire for controlling the movement of the industrial robot body 1 are prior arts and can be realized by those skilled in the art for installation, and will not be elaborated in detail here). After the line body 13 is installed, in the initial state, when the forearm driver 5 and the forearm shaft 6 are at a right angle, the rollers 11 and the skateboard 10 support the line body 13 by the first spring 12, and the correspondingly staggered rollers 11 support the line body 13 at the same time, so that the line body 13 is arranged in a snake shape inside the protection box 7. When the forearm driver 5 drives the forearm shaft 6 to move up and down, the forearm shaft 6 will stretch the line body 13. At this time, the line body 13 moves and drives the slider 15 to move inside the fixed box 14 and stretch the second spring 16. When the angle of the forearm driver 5 driving the forearm shaft 6 to move up and down increases, the line body 13 continues to be stretched. The line body 13 inside the protection box 7 is stretched and squeezes a plurality of staggered rollers 11. At this time, after being squeezed, the rollers 11 drive the skateboard 10 to compress the first spring 12 into the slot 9. The rollers 11 and the first spring 12 in the protection box 7 can automatically adjust their positions with the stretching change of the line body 13, providing dynamic support and buffering for the line body 13, further reducing the friction risk of the line body 13. Moreover, the contact area between the line body 13 and the rollers 11 is more uniform, the rotation of the rollers 11 is smoother, and the risk of the line body 13 getting stuck is reduced. When the forearm shaft 6 returns to the initial state, the slider 15 drives the line body 13 to reset under the reset of the second spring 16. At this time, the rollers 11 and the skateboard 10 support the line body 13 again by the first spring 12. During the process of the line body 13 being stretched or reset, the bell mouth shells 17, the top arc plate 19 and the bottom arc plate 18 on the surfaces of both ends of the fixed box 14 will increase the bending radian of the line body 13, and the curvature radius of the line body 13 at the bending part becomes larger, avoiding the stress concentration phenomenon caused by sharp bending. Moreover, due to the design of the top arc plate 19 at the top and the bottom arc plate 18 at the bottom of the protection box 7, the line body 13 can move along a preset arc path inside the protection box 7, reducing the requirement for the reserved length of the line body 13 and avoiding the swing of the redundant line body 13. In this solution, when the forearm driver 5 drives the forearm shaft 6 to move up and down, the forearm shaft 6 will stretch the line body 13. At this time, the line body 13 moves and drives the slider 15 to move inside the fixed box 14. When the angle of the forearm driver 5 driving the forearm shaft 6 to move up and down increases,The wire body 13 continues to be stretched, and the wire body 13 inside the protection box 7 is stretched and squeezed by a plurality of staggered rollers 11. At this time, after being squeezed, the rollers 11 drive the slide plate 10 to compress the first spring 12 into the slot 9. When the forearm shaft 6 returns to its initial state, the slider 15 drives the wire body 13 to reset under the reset of the second spring 16. At this time, the rollers 11 and the slide plate 10 support the wire body 13 again under the action of the first spring 12. Compared with the traditional wire body 13 protection device, the rollers 11 and the first spring 12 in the protection box 7 can automatically adjust their positions with the change of the wire body 13, providing dynamic support and buffering for the wire body 13, further reducing the friction risk between the wire body 13 and the surface of the industrial robot body 1, thereby avoiding the surface of the wire body 13 from being damaged by friction and extending the service life of the wire body 13; during the process of stretching or resetting the wire body 13, the bell mouth shells 17, the top arc plates 19 and the bottom arc plates 18 on both ends of the fixed box 14 will increase the bending arc of the wire body 13, and the curvature radius of the wire body 13 at the bending part becomes larger, avoiding the stress concentration phenomenon caused by sharp bending. Moreover, due to the design of the top arc plate 19 at the top of the protection box 7 and the bottom arc plate 18 at the bottom, the wire body 13 can move along a preset arc path in the protection box 7, reducing the required reserved length of the wire body 13, avoiding the swing of the redundant wire body 13, and further avoiding the surface of the wire body 13 from being damaged by friction, and further extending the service life of the wire body 13.,

[0033] Embodiment 2: Please refer to Figure 1 - Figure 10 , which is different from Embodiment 1 in that a fixing ring 23 is arranged on the surface of the forearm shaft 6, and a rotatable angle adjustment ring 25 is arranged above the fixing ring 23. An outer bell mouth 26 and an inner bell mouth 27 are fixedly installed on the inner side and the outer side of the angle adjustment ring 25 respectively. When the forearm driver 5 works to make the forearm shaft 6 rotate, at this time, the forearm shaft 6 will stretch the wire body 13, and the movement of the wire body 13 will drive the angle adjustment ring 25 to rotate, reducing the twist degree of the wire body 13. At the same time, the movement of the wire body 13 drives the slider 15 to move inside the fixed box 14 to stretch the second spring 16. The wire body 13 continues to be stretched, and the wire body 13 inside the protection box 7 is stretched and squeezed by a plurality of staggered rollers 11. At this time, after being squeezed, the rollers 11 drive the slide plate 10 to compress the first spring 12 into the slot 9. The rollers 11 and the first spring 12 in the protection box 7 can automatically adjust their positions with the stretching change of the wire body 13, providing dynamic support and buffering for the wire body 13. Due to the settings of the outer bell mouth 26, the angle adjustment ring 25 and the inner bell mouth 27, it is prevented that the wire body 13 rubs against the surface of the forearm shaft 6 and twists, and at the same time, the bending arc of the wire body 13 is increased, avoiding the stress concentration phenomenon caused by sharp bending, and further extending the service life of the wire body 13.

[0034] The surface of the angle adjustment ring 25 is correspondingly provided with a through groove, and the outer bell mouth 26 is communicated with the inner bell mouth 27 through the groove, and the line body 13 passes through the outer bell mouth 26, the angle adjustment ring 25 and the inner bell mouth 27.

[0035] A fixing rod 28 is arranged between the fixing box 14 and the fixing ring 23, and the inner parts of both ends of the fixing rod 28 are fixedly connected with the surface of the fixing box 14 and the surface of the fixing ring 23.

[0036] A follower shaft 24 is arranged between the fixing ring 23 and the angle adjustment ring 25, and the angle adjustment ring 25 is rotationally connected with the fixing ring 23 through the follower shaft 24.

[0037] The using steps of the present invention: When the line protection device of this industrial robot is in use, during the rotation of the forearm shaft 6, in order to prevent the line body 13 from being twisted and rubbed against the surface of the forearm shaft 6, when installing the line body 13, one end of the line body 13 is passed through the fixing box 14 and then passed out from the bell mouth shell 17, and then the line body 13 is passed through the outer bell mouth 26, the angle adjustment ring 25 and the inner bell mouth 27, and installed on the surface of the industrial robot body 1. When the forearm driver 5 works to make the forearm shaft 6 rotate, at this time, the forearm shaft 6 will stretch the line body 13, and the movement of the line body 13 will drive the angle adjustment ring 25 to rotate at an angle, reducing the twist degree of the line body 13. At the same time, the movement of the line body 13 drives the slider 15 to move and stretch the second spring 16 inside the fixing box 14, and the line body 13 continues to be stretched. The line body 13 inside the protection box 7 is stretched and extruded by a plurality of staggeredly arranged rollers 11. At this time, after being squeezed, the rollers 11 drive the slide plate 10 to compress the first spring 12 into the slot 9. The rollers 11 and the first spring 12 in the protection box 7 can automatically adjust their positions with the stretching of the line body 13, providing dynamic support and buffering for the line body 13. Due to the settings of the outer bell mouth 26, the angle adjustment ring 25 and the inner bell mouth 27, it is prevented that the line body 13 is twisted and rubbed against the surface of the forearm shaft 6, further prolonging the service life of the line body 13.

[0038] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A circuit protection device for an industrial robot, comprising an industrial robot body (1), characterized in that: In the middle of the industrial robot body (1), there is a large arm (4). A protective box (7) is fixedly installed on the surface of the large arm (4). On both inner walls of the protective box (7), a plurality of fixing seats (8) are fixedly installed. The plurality of fixing seats (8) on both inner walls are arranged in an interleaved manner. A slot (9) is formed inside any one of the fixing seats (8). A slide plate (10) matching the slot (9) is slidably connected inside any one of the slots (9). A rotatable roller (11) is arranged at one end of any one of the slide plates (10). A first spring (12) is elastically connected between the slide plate (10) and the slot (9). A wire body (13) is arranged on the surface of the industrial robot body (1). The wire body (13) passes through the inside of the protective box (7). The wire body (13) is in contact with the surface of any one of the rollers (11). A forearm driver (5) is arranged at the top of the industrial robot body (1). An activatable forearm shaft (6) is arranged at one end of the forearm driver (5). A fixing box (14) is fixedly installed on the surface of the forearm driver (5). A slider (15) matching the fixing box (14) is slidably connected inside the fixing box (14). The wire body (13) penetrates through the fixing box (14) and the slider (15), and the wire body (13) is fixed by the slider (15).

2. The circuit protection device for an industrial robot according to claim 1, characterized in that: A base (2) is fixedly installed on the bottom surface of the industrial robot body (1). A rotating seat (3) is rotatably connected to the surface of the base (2). The inner sides of both ends of the large arm (4) are respectively rotatably connected to the rotating seat (3) and the forearm driver (5).

3. The circuit protection device of the industrial robot according to claim 1, characterized in that: One end of the first spring (12) is fixedly connected to the inner wall of the slot (9), and the other end of the first spring (12) is fixedly connected to the slide plate (10). The slide plate (10) is slidably connected to the slot (9) through the first spring (12).

4. The circuit protection device for an industrial robot according to claim 1, characterized in that: A second spring (16) is elastically connected between the fixing box (14) and the slider (15). One end of the second spring (16) is fixedly connected to the surface of the slider (15), and the other end of the second spring (16) is fixedly connected to the inner wall of the fixing box (14). Bell mouth shells (17) communicating with the fixing box (14) are fixedly installed on the surfaces of both ends of the fixing box (14).

5. The circuit protection device for an industrial robot according to claim 4, characterized in that: A bottom arc plate (18) is fixedly installed on the bottom inner wall of the protective box (7). The wire body (13) is in contact with the surface of the bottom arc plate (18). A top arc plate (19) is fixedly installed on the top inner wall of the protective box (7). The wire body (13) is in contact with the surface of the top arc plate (19).

6. The circuit protection device for an industrial robot according to claim 4, wherein: A connecting block (20) is fixedly installed between the fixing box (14) and the forearm driver (5). Sliding grooves (21) communicating with the fixing box (14) are formed on the top and bottom surfaces of the fixing box (14). Follow-up blocks (22) matching the sliding grooves (21) are slidably connected inside the two sliding grooves (21). The two follow-up blocks (22) are fixedly connected to the top and bottom surfaces of the slider (15).

7. The circuit protection device for an industrial robot according to claim 1, characterized in that: The surface of the forearm shaft (6) is provided with a fixing ring (23). Above the fixing ring (23), there is a rotatable angle adjustment ring (25). The inner side and the outer side of the angle adjustment ring (25) are respectively fixedly installed with an outer flared opening (26) and an inner flared opening (27).

8. The circuit protection device for an industrial robot according to claim 7, characterized in that: The surface of the angle adjustment ring (25) is correspondingly provided with a through groove. The outer flared opening (26) is communicated with the inner flared opening (27) through the groove. The wire body (13) passes through the outer flared opening (26), the angle adjustment ring (25) and the inner flared opening (27).

9. The circuit protection device for an industrial robot according to claim 7, characterized in that: A fixing rod (28) is arranged between the fixing box (14) and the fixing ring (23). The two ends of the fixing rod (28) are fixedly connected to the surface of the fixing box (14) and the surface of the fixing ring (23) respectively inside the fixing rod (28).

10. The circuit protection device for an industrial robot according to claim 7, characterized in that: A follower shaft (24) is arranged between the fixing ring (23) and the angle adjustment ring (25). The angle adjustment ring (25) is rotationally connected to the fixing ring (23) through the follower shaft (24).

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