A traction device for a welding robot

Abstract

The application discloses a traction device for a welding robot, which comprises a machining rack, a traction mechanical arm and traction assemblies. The middle part of the machining rack is provided with a polishing device and a welding device. Two groups of traction assemblies are arranged on the machining rack. The traction assemblies comprise a polishing traction wheel group and a welding traction wheel group. The polishing traction wheel group comprises a first wheel group frame, first traction wheels, fixing blocks and lifting blocks. The fixing blocks and the lifting blocks are connected to the first wheel group frame. The first traction wheels are rotatably arranged on one side of the lifting blocks and the fixing blocks. The welding traction wheel group comprises a second wheel group frame, second traction wheels, mounting blocks and moving blocks. The mounting blocks and the moving blocks are connected to the second wheel group frame. The second traction wheels are rotatably arranged on one side of the mounting blocks and the moving blocks. The application has the effect of improving the quality and efficiency of metal wire connection.

Description

Technical Field

[0001] This application relates to the technical field of wire processing, and in particular to a traction device for a welding robot. Background Technology

[0002] During the metal wire processing, when the metal wire in the wire reel inside the wire stranding machine is used up, the wire reel needs to be replaced. After the wire reel is replaced, the old wire needs to be connected to the metal wire on the new wire reel.

[0003] Currently, a robotic arm is typically used to clamp the ends of two metal wires. To ensure the quality of the connection, the ends of the metal wires need to be ground first. After the metal wires are ground, the ends of the two metal wires are moved to the welding device for welding.

[0004] Regarding the aforementioned technologies, the inventors believe that in the process of using a robotic arm to clamp and splice metal wires, on the one hand, the robotic arm directly grips the end of the metal wire and pulls it to perform grinding, welding, and other operations. However, because the metal wire is thin, if the direction of pulling the metal wire deviates and the pulling speed is relatively fast, the metal wire is prone to extreme stretching and breakage. On the other hand, the clamping and movement of the robotic arm is easily restricted by other structures in the device, making it difficult to move the end of the metal wire near the grinding and welding devices. Furthermore, the transport position of the robotic arm is not fixed each time, which can easily cause the end of the metal wire to not be precisely aligned with the grinding and welding devices, thus affecting the splicing operation of the metal wire. Utility Model Content

[0005] To improve the quality and efficiency of metal wire splicing, this application provides a traction device for a welding robot.

[0006] The traction device for a welding robot provided in this application adopts the following technical solution: A traction device for a welding robot includes a processing frame, a traction robotic arm, and a traction assembly. A grinding device and a welding device are disposed in the middle of the processing frame. Two sets of traction assemblies are disposed on the processing frame, located on opposite sides of the grinding and welding devices. One traction robotic arm is disposed at each opposite end of the processing frame. The traction assembly includes a grinding traction wheel set and a welding traction wheel set. The grinding traction wheel set includes a first wheel set frame, a first traction wheel, a fixed block, and a lifting block. The fixed block and the lifting block are both connected to the first wheel set frame and arranged parallel to each other. The first traction wheel extends along its length on one side of the lifting block and the fixed block. The first wheel assembly has several directional rotating parts, and several first traction wheels are located on the same plane. The first wheel assembly frame is height-corresponding to the grinding device. The first wheel assembly frame is provided with a drive source for driving the first traction wheels to rotate. The welding traction wheel assembly includes a second wheel assembly frame, a second traction wheel, a mounting block, and a moving block. The mounting block and the moving block are both connected to the second wheel assembly frame and are arranged parallel to each other. Several second traction wheels are rotatably arranged along the length direction on one side of the mounting block and the moving block. Several second traction wheels are located on the same plane. The second wheel assembly frame is provided with a drive source for driving the second traction wheels to rotate. The second wheel assembly frame is height-corresponding to the welding device.

[0007] By adopting the above technical solution, when splicing two metal wires, the traction robotic arm first places the two metal wires between the two rows of first traction wheels on the first wheel assembly frame. The first traction wheels rotate under the action of the drive source, pulling the metal wires. The control system controls the rotation speed of the first traction wheels, causing them to move forward a fixed length in a fixed direction. The ends of the metal wires move to the vicinity of the grinding device, which grinds the cross-section of the metal wires to facilitate subsequent welding. After grinding the metal wires, the traction robotic arm places the ground wire ends between the two rows of second traction wheels on the second wheel assembly frame. The second traction wheels rotate under the drive of the drive source, pulling the metal wires in the same direction, causing the two metal wires to stably approach each other and move to the welding device. The welding device welds the ends of the two metal wires, thus achieving the splicing of broken wires. By using a traction assembly instead of a robotic arm to pull the metal wire, the influence of the machine structure on the movement of the robotic arm is avoided. Furthermore, by controlling the traction speed and time, a stable direction and fixed distance of traction are achieved for the metal wire. This facilitates more accurate alignment of the wire end with the grinding and welding devices, improving the efficiency and quality of metal wire splicing. Through the coordinated operation of the processing frame, the traction robotic arm, and the traction assembly, stable traction, grinding, and welding of the metal wire are achieved, effectively improving the quality and efficiency of metal wire splicing.

[0008] Optionally, the fixed block is fixedly connected to the first wheel set frame, the lifting block is slidably connected to the first wheel set frame, the first wheel set frame is provided with a first driving member for driving the lifting block closer to or away from the fixed block, the mounting block is fixedly connected to the second wheel set frame, the moving block is slidably connected to the second wheel set frame, the second wheel set frame is provided with a second driving member for driving the moving block closer to or away from the mounting block, and traction ring grooves are provided circumferentially on the peripheral walls of the first traction wheel and the second traction wheel.

[0009] By adopting the above technical solution, and by adjusting the distance between the two rows of first traction wheels on the first wheel assembly frame and the distance between the two rows of second traction wheels on the second wheel assembly frame, the device can easily clamp and pull metal wires of different diameters. The traction ring groove provides limiting guidance for the metal wire, reducing the possibility of the metal wire coming off between the first and second traction wheels during the traction process.

[0010] Optionally, each traction assembly includes two sets of first wheel sets, with the two first wheel sets in the same traction assembly arranged perpendicularly, and the gap between the two rows of first traction wheels in one first wheel set being collinear with the gap between the two rows of first traction wheels in the other first wheel set.

[0011] By adopting the above technical solution and setting two sets of mutually perpendicular first wheel frames, the clamping and straightening of the metal wire is achieved. After passing through the two first wheel frames, the metal wire can be moved more accurately to the vicinity of the grinding device for grinding operation.

[0012] Optionally, the processing frame is provided with a guide vertical plate, which is located between the first wheel assembly frame and the grinding device. The guide vertical plate has a guide opening, and a guide cone is connected to the side of the guide vertical plate near the grinding device. The end of the guide cone extends toward the grinding device.

[0013] By adopting the above technical solution, the metal wire pulled by the first wheel frame passes through the guide opening on the guide vertical plate and extends towards the grinding device under the guidance of the guide cone, which makes it easier for the metal wire to move more accurately to the vicinity of the grinding device for grinding operation.

[0014] Optionally, a cable outlet communicating with the guide port is provided on one side of the guide vertical plate, and a traction through groove is provided on the guide cone along its length.

[0015] By adopting the above technical solution, the setting of the outlet and the traction channel facilitates the direct extraction of the metal wire from the guide plate and guide cone by the traction robotic arm after the metal wire has been polished.

[0016] Optionally, a protective rotating plate is rotatably mounted on the guide vertical plate. The protective rotating plate is rotatably connected to the guide vertical plate via a rotating shaft. A connecting torsion spring is mounted on the rotating shaft. One end of the connecting torsion spring is connected to the guide vertical plate, and the other end is connected to the protective rotating plate. A limit stop is mounted on the guide vertical plate. In its natural state, the protective rotating plate abuts against the limit stop under the action of the connecting torsion spring and blocks the outlet.

[0017] By adopting the above technical solution, the protective rotating plate blocks the wire outlet, reducing the possibility of the metal wire coming out of the guide opening during grinding. During unloading, the traction robotic arm clamps the end of the metal wire and pulls it outwards. At this time, the metal wire contacts the protective rotating plate and rotates it. The protective rotating plate then blocks the guide opening, facilitating the wire's extraction. After the metal wire is extracted, the protective baffle resets under the action of the connecting torsion spring, and the limiting block restricts the rotation angle of the protective rotating plate.

[0018] Optionally, the second traction wheels on the mounting block and the moving block are arranged in a vertically corresponding manner, and a plurality of anti-sagging rods are vertically arranged on the side of the mounting block and the moving block where the second traction wheels are located, and the anti-sagging rods are arranged between two adjacent second traction wheels.

[0019] By adopting the above technical solution, the anti-sagging rod is set between two adjacent second traction wheels, which reduces the possibility that the metal wire will sag under the action of gravity when passing between the two second traction wheels, thus affecting the traction of the metal wire.

[0020] Optionally, a movable plate is arranged parallel to the movable block in the second wheel set frame. The movable plate is located on the side of the movable block away from the mounting block. A plurality of movable slide rods are vertically connected to the side of the movable block close to the movable plate. The movable slide rods are slidably connected to the movable plate. A buffer spring is connected between the movable plate and the movable block. A drive source for driving the movable plate to move is provided on the second wheel set frame.

[0021] By adopting the above technical solution, when clamping the metal wire passing through the two rows of second traction wheels, the moving plate moves towards the mounting block under the drive of the drive source. The second traction wheels on the moving block and the second traction wheels on the mounting block clamp the metal wire simultaneously. The buffer spring reduces the possibility of excessive clamping force on the metal wire by the two rows of second traction wheels, which could damage the metal wire.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Through the cooperation of the processing frame, traction robotic arm and traction components, stable traction and grinding welding of metal wire are achieved, which improves the quality and efficiency of metal wire splicing. 2. The guide plate design facilitates more accurate movement of the metal wire to the vicinity of the grinding device for grinding operations; 3. By setting two sets of mutually perpendicular first wheel frames, the clamping and straightening of the metal wire is achieved. After passing through the two first wheel frames, the metal wire can move more accurately to the vicinity of the grinding device for grinding operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram illustrating the structure of a traction device for a welding robot, as described in this application.

[0024] Figure 2 This is a structural schematic diagram illustrating the guide component in an embodiment of this application.

[0025] Figure 3 This is a schematic diagram illustrating the structure of the traction component in the embodiments of this application.

[0026] Figure 4 yes Figure 2 Enlarged view of part A in the middle.

[0027] Explanation of reference numerals in the attached drawings: 1. Processing frame; 2. Traction assembly; 21. Grinding traction wheel set; 211. First wheel set frame; 212. First traction wheel; 213. Fixing block; 214. Lifting block; 215. Proximity detection switch; 216. Drive motor; 217. Lifting screw; 218. Lifting slide bar; 219. Threaded seat; 22. Welded traction wheel set; 221. Second wheel set frame; 222. Second traction wheel; 223. Mounting block; 224. Moving block 225. Moving cylinder; 226. Moving plate; 227. Moving slide bar; 228. Limiting end block; 229. Buffer spring; 3. Guide assembly; 31. Guide vertical plate; 311. Guide port; 312. Cable outlet; 32. Guide cone; 321. Traction channel; 33. Protective rotating plate; 34. Rotating shaft; 35. Connecting torsion spring; 36. Limiting stop; 4. Welding device; 5. Grinding device; 6. Traction robotic arm; 7. Traction ring groove; 8. Anti-sagging bar. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be further described in detail below. Embodiments of this application provide a traction device for a welding robot, which improves the quality and efficiency of wire splicing.

[0029] Reference Figure 1 and Figure 2 A traction device for a welding robot includes a processing frame 1, a traction assembly 2, a guide assembly 3, a welding device 4, and a grinding device 5. The welding device 4 and the grinding device 5 are both located in the middle of the processing frame 1, used for grinding the ends of metal wires and welding the ends of two metal wires. Two sets of traction assemblies 2 are provided on the processing frame 1, symmetrically arranged on opposite sides of the welding device 4 and the grinding device 5. Two traction robotic arms 6 are provided on the processing frame 1.

[0030] Reference Figure 2 and Figure 3The traction assembly 2 includes a grinding traction wheel set 21 and a welding traction wheel set 22. The grinding traction wheel set 21 is correspondingly arranged with the grinding device 5, and the welding traction wheel set 22 is correspondingly arranged with the welding device 4. The grinding traction wheel set 21 includes a first wheel frame 211, a first traction wheel 212, a fixing block 213, a lifting block 214, a proximity detection switch 215, a drive motor 216, a lifting screw 217, a lifting slide bar 218, and a threaded seat 219. The first wheel frame 211 is set on the processing frame 1, the fixing block 213 is fixedly connected to the first wheel frame 211, and the lifting block 214 is slidably arranged in the first wheel frame 211, with the lifting block 214 arranged parallel to the fixing block 213. Several first traction wheels 212 are rotatably arranged on the same side of the fixed block 213 and the lifting block 214. The first traction wheels 212 on the fixed block 213 and the lifting block 214 are staggered. A drive source for driving the rotation of the first traction wheels 212 is provided on the first wheel assembly frame 211. One proximity detection switch 215 is connected to each of the two opposite vertical side walls of the first wheel assembly frame 211. The proximity detection switch 215 is electrically connected to the control system (not shown in the attached figure).

[0031] Reference Figure 3 A drive motor 216 is connected to the side of the first wheel assembly frame 211 away from the fixed block 213. The output shaft of the drive motor 216 is perpendicular to the length direction of the lifting block 214 and is driven by one end of the lifting screw 217. The other end of the lifting screw 217 is rotatably connected to the lifting block 214. A threaded seat 219 is provided on the first wheel assembly frame 211, and the lifting screw 217 is threadedly connected to the threaded seat 219. One end of the lifting slide rod 218 is driven by the drive motor 216, and the other end passes through the first wheel assembly frame 211 and is connected to the lifting block 214. The lifting slide rod 218 is slidably engaged with the first wheel assembly frame 211. A lifting sleeve is provided on the first wheel assembly frame 211, and the lifting slide rod 218 is slidably disposed in the lifting sleeve. Two sets of grinding traction wheel assemblies 21 are provided on the processing frame 1, and the two first wheel assembly frames 211 in the two sets of grinding traction wheel assemblies 21 are vertically arranged. The gap between the two rows of first traction wheels 212 in one of the first wheel sets 211 is collinear with the gap between the two rows of first traction wheels 212 in the other first wheel set 211.

[0032] Reference Figure 3The welded traction wheel assembly 22 includes a second wheel assembly frame 221, second traction wheels 222, a mounting block 223, a moving block 224, a moving cylinder 225, a moving plate 226, a moving slide rod 227, a limiting end block 228, and a buffer spring 229. The second wheel assembly frame 221 is vertically arranged. The mounting block 223 is fixedly connected to the second wheel assembly frame 221, and the moving block 224 is slidably connected to the second wheel assembly frame 221. The moving block 224 is positioned above the mounting block 223 and parallel to it. Several second traction wheels 222 are rotatably arranged on the same side of the mounting block 223 and the moving block 224. Several second traction wheels 222 are located on the same vertical plane, and the several second traction wheels 222 on the mounting block 223 and the several second traction wheels 222 on the moving block 224 are vertically corresponding one-to-one. Both the first traction wheel 212 and the second traction wheel 222 have traction ring grooves 7 arranged circumferentially on their peripheral walls, and the second wheel frame 221 is provided with a drive source for driving the second traction wheel 222 to rotate.

[0033] Reference Figure 3 A movable cylinder 225 is connected to the top of the second wheel assembly frame 221. The output shaft of the movable cylinder 225 extends downward into the second wheel assembly frame 221 and is horizontally connected to the movable plate 226. The movable plate 226 is arranged parallel above the movable block 224. Several movable slide rods 227 are vertically connected to the top surface of the movable block 224. The movable slide rods 227 pass through the movable plate 226 and are slidably connected to it. A limiting end block 228 is connected to the top of each movable slide rod 227. A buffer spring 229 is sleeved on each movable slide rod 227. One end of the buffer spring 229 is connected to the bottom surface of the movable plate 226, and the other end is connected to the top surface of the movable block 224. In its natural state, the limiting end block 228 is pressed against the top surface of the movable plate 226 under the action of the buffer spring 229. Several anti-sagging rods 8 are horizontally connected to one side of the mounting block 223 and the moving block 224 where the second traction wheel 222 is located. The anti-sagging rods 8 are located between two adjacent second traction wheels 222.

[0034] Reference Figure 2 and Figure 4A guide assembly 3 is mounted on the processing frame 1, and one guide assembly 3 is provided between each set of grinding traction wheel sets 21 and the grinding device 5. The guide assembly 3 includes a guide vertical plate 31, a guide cone 32, a protective rotating plate 33, a rotating shaft 34, a connecting torsion spring 35, and a limiting block 36. The guide vertical plate 31 is vertically mounted on the processing frame 1, and has a guide opening 311 corresponding to the grinding traction wheel set 21. A cable outlet 312 communicating with the guide opening 311 is opened on the side of the guide vertical plate 31. The guide cone 32 is connected to the side of the guide vertical plate 31 near the grinding device 5 and is connected to the guide opening 311. The open end of the guide cone 32 is inclined towards the grinding device 5. A traction groove 321 communicating with the cable outlet 312 is opened on the side wall of the guide cone 32.

[0035] Reference Figure 4 The protective rotating plate 33 is rotatably connected to the guide vertical plate 31 via a rotating shaft 34. A connecting torsion spring 35 is sleeved on the rotating shaft 34, with one end of the connecting torsion spring 35 connected to the guide vertical plate 31 and the other end connected to the protective rotating plate 33. A limiting block 36 is connected to one side of the guide vertical plate 31. In its natural state, the protective rotating plate 33 rotates under the action of the connecting torsion spring 35 until it abuts against the limiting block 36 and blocks the outlet 312.

[0036] Reference Figure 1-3 When splicing the metal wire, the two traction robotic arms 6 first move the end of the metal wire between the two rows of first traction wheels 212 of the first wheel set frame 211. Driven by the drive source, the first traction wheels 212 pull the metal wire. A proximity detection switch 215 detects the entry of the metal wire. By controlling the rotation speed and duration of the first traction wheels 212, the metal wire is pulled at a uniform speed for an equal length each time, improving the uniformity of the traction process. The arrangement of two sets of vertical first wheel sets 211 enables the straightening operation of the metal wire, ensuring that the metal wire removed from the first wheel set frame 211 remains straight, facilitating a stable traction process.

[0037] Reference Figure 3 For metal wires of different diameters, the drive motor 216 drives the lifting screw 217 to rotate. Under the drive of the lifting screw 217 and the guidance of the lifting slide 218, the lifting block 214 moves towards or away from the fixed block 213, thereby adjusting the distance between the two rows of second traction wheels 222 and expanding the applicability of the device.

[0038] Reference Figure 3 and Figure 4The metal wire, after passing through the first round frame 211, passes through the guide port 311 and the guide vertical plate 31, and moves to the vicinity of the grinding device 5 for grinding under the guidance of the guide cone 32. The guide assembly 3 provides further precise guidance for the metal wire, facilitating improved traction accuracy. The protective rotating plate 33 blocks the outlet 312, reducing the possibility of the metal wire coming off the guide vertical plate 31 during grinding. After grinding the end face of the metal wire, the traction robotic arm 6 clamps the metal wire and pulls it out through the guide port 311 of the guide vertical plate 31 and the traction groove 321 of the guide cone 32. At this time, the protective rotating plate 33 rotates under the drive of the metal wire. When the metal wire is completely removed from the guide port 311, the anti-detachment rotating plate resets under the action of the connecting torsion spring 35, and the limit stop 36 limits the rotation stroke of the anti-detachment rotating plate.

[0039] Reference Figure 1-3 The traction arm 6 places the metal wire between two rows of second traction wheels 222. Driven by a drive source, the second traction wheels 222 rotate, achieving the traction effect on the metal wire. The traction ring groove 7 reduces the possibility of the metal wire slipping out during the traction process of the first traction wheel 212 and the second traction wheel 222, helping to improve the stability of the traction process. The drive cylinder adjusts the spacing between the two rows of second traction wheels 222, helping to expand the applicability of the device. The anti-sagging rod 8 reduces the possibility of the metal wire sagging under gravity when it is transmitted between two adjacent second traction wheels 222. The buffer spring 229 reduces the possibility of excessive pressure on the metal wire during clamping, which could damage the metal wire.

[0040] Reference Figure 1-3 The ends of the two metal wires are stably moved to the vicinity of the welding device 4 under the traction of the second traction wheel 222 and welded, thus achieving a stable connection of the metal wires.

[0041] The implementation principle of a traction device for a welding robot in this embodiment is as follows: When splicing metal wires, two traction robotic arms 6 first move the end of the metal wire to the space between the two rows of first traction wheels 212 of the first wheel assembly frame 211. The first traction wheels 212 pull the metal wire, which passes through the guide port 311, through the guide vertical plate 31, and moves to the vicinity of the grinding device 5 for grinding under the guidance of the guide cone 32.

[0042] The traction arm 6 places the metal wire between two rows of second traction wheels 222. The second traction wheels 222 rotate, thus tractioning the metal wire. Under the traction of the second traction wheels 222, the ends of the two metal wires move stably to the vicinity of the welding device 4 and are welded, thus achieving a stable connection of the metal wires.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A traction device for a welding robot, characterized in that: The assembly includes a processing frame (1), a traction robotic arm (6), and a traction component (2). A grinding device (5) and a welding device (4) are provided in the middle of the processing frame (1). Two sets of the traction component (2) are provided on the processing frame (1), positioned on opposite sides of the grinding device (5) and the welding device (4). One traction robotic arm (6) is provided at each opposite end of the processing frame (1). The traction component (2) includes a grinding device (5) and a welding device (4). The grinding traction wheel assembly (21) and the welding traction wheel assembly (22) are provided. The grinding traction wheel assembly (21) includes a first wheel assembly frame (211), a first traction wheel (212), a fixing block (213), and a lifting block (214). The fixing block (213) and the lifting block (214) are both connected to the first wheel assembly frame (211) and arranged in parallel. The first traction wheel (212) rotates along its length on one side of the lifting block (214) and the fixing block (213). The first traction wheel (212) is located on the same plane. The first wheel set frame (211) is set at a height corresponding to the grinding device (5). The first wheel set frame (211) is provided with a drive source for driving the first traction wheel (212) to rotate. The welding traction wheel set (22) includes a second wheel set frame (221), a second traction wheel (222), a mounting block (223), and a moving block (224). The mounting block (223) and the moving block (224) are both connected to the second wheel set frame (221) and are arranged in parallel. The second traction wheel (222) is rotatably arranged on one side of the mounting block (223) and the moving block (224) along its length direction. The second traction wheel (222) is located on the same plane. The second wheel set frame (221) is provided with a drive source for driving the second traction wheel (222) to rotate. The second wheel set frame (221) is set at a height corresponding to the welding device (4).

2. The traction device for a welding robot according to claim 1, characterized in that: The fixed block (213) is fixedly connected to the first wheel set frame (211), the lifting block (214) is slidably connected to the first wheel set frame (211), the first wheel set frame (211) is provided with a first driving member for driving the lifting block (214) to move closer to or away from the fixed block (213), the mounting block (223) is fixedly connected to the second wheel set frame (221), the moving block (224) is slidably connected to the second wheel set frame (221), the second wheel set frame (221) is provided with a second driving member for driving the moving block (224) to move closer to or away from the mounting block (223), and traction ring grooves (7) are provided circumferentially on the peripheral walls of the first traction wheel (212) and the second traction wheel (222).

3. A traction device for a welding robot according to claim 2, characterized in that: Each traction assembly (2) includes two sets of first wheel sets (211). The two first wheel sets (211) in the same traction assembly (2) are arranged perpendicularly. The gap between the two rows of first traction wheels (212) in one first wheel set (211) is collinear with the gap between the two rows of first traction wheels (212) in the other first wheel set (211).

4. A traction device for a welding robot according to claim 1, characterized in that: The processing frame (1) is provided with a guide vertical plate (31), which is located between the first wheel assembly frame (211) and the grinding device (5). The guide vertical plate (31) has a guide opening (311), and a guide cone (32) is connected to the side of the guide vertical plate (31) near the grinding device (5). The end of the guide cone (32) extends toward the grinding device (5).

5. A traction device for a welding robot according to claim 4, characterized in that: The guide vertical plate (31) has a cable outlet (312) connected to the guide port (311) on one side, and the guide cone (32) has a traction through groove (321) along its length.

6. A traction device for a welding robot according to claim 5, characterized in that: A protective rotating plate (33) is rotatably mounted on the guide vertical plate (31). The protective rotating plate (33) is rotatably connected to the guide vertical plate (31) via a rotating shaft (34). A connecting torsion spring (35) is mounted on the rotating shaft (34). One end of the connecting torsion spring (35) is connected to the guide vertical plate (31), and the other end is connected to the protective rotating plate (33). A limit stop (36) is connected to the guide vertical plate (31). In its natural state, the protective rotating plate (33) abuts against the limit stop (36) under the action of the connecting torsion spring (35) and blocks the outlet (312).

7. A traction device for a welding robot according to claim 2, characterized in that: The second traction wheels (222) on the mounting block (223) and the moving block (224) are arranged in a vertical direction. Several anti-sagging rods (8) are vertically arranged on the side of the mounting block (223) and the moving block (224) where the second traction wheels (222) are located. The anti-sagging rods (8) are located between two adjacent second traction wheels (222).

8. A traction device for a welding robot according to claim 7, characterized in that: In the second wheel set frame (221), a movable plate (226) is arranged parallel to the movable block (224). The movable plate (226) is located on the side of the movable block (224) away from the mounting block (223). A plurality of movable slide rods (227) are vertically connected to the side of the movable block (224) close to the movable plate (226). The movable slide rods (227) are slidably connected to the movable plate (226). A buffer spring (229) is connected between the movable plate (226) and the movable block (224). A drive source for driving the movable plate (226) to move is provided on the second wheel set frame (221).

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