Automatic welding device for wheel steel ring

Abstract

The invention relates to the field of welding devices, in particular to an automatic welding device for wheel steel rims, which comprises a welding device, a laser welding device, an exhaust device and a welding device. The protection mechanism comprises an annular block and a shielding plate which are arranged on the side face of the mounting base, the annular block is fixedly arranged on the mounting base in a sleeving mode, a cooling assembly used for cooling the laser welding head is arranged on the annular block, a first sliding groove is formed in the annular block, and through the arrangement of the cooling assembly, the laser welding head can be cooled; the problem of internal short circuit of the laser welding head or rapid aging of the laser welding head caused by too high temperature is avoided, through arrangement of a sliding assembly, the position of a shielding plate can be adjusted according to the wind position, the wind shielding effect is improved, and the situation that protection gas exhausted by an exhaust head is blown away by airflow, so that production and welding of wheel steel rings are affected is avoided; and meanwhile, the blocked air blows to the cooling assembly, and cooling of water in the cooling assembly is accelerated.

Description

Technical Field

[0001] The invention relates to the field of welding devices, in particular to an automatic welding device for a wheel rim. Background Art

[0002] The new energy wheel rim is a rotating component between the axle and the tire of the new energy vehicle that supports the tire to bear the load. It is mainly composed of spokes and rims. During the production process, the outer ring of the wheel rim is first rolled into a ring shape with steel plates so that the two ends of the steel plates are in contact, and then a laser welding device is used to weld the contact ends.

[0003] The laser welding device uses a high-energy-density laser beam as a heat source to quickly melt the steel plate and form a molten pool. At this high temperature, the molten metal is very active and easily undergoes an oxidation reaction with oxygen in the air. Therefore, a protective gas needs to be introduced. The function of the protective gas is to isolate the molten pool from oxygen, forming a flowing inert gas environment, preventing direct contact between the metal and oxygen, thereby reducing oxidation.

[0004] In the hot summer, in order to increase the comfort of workers, factories often use window ventilation and multiple large floor fans for ventilation and cooling. When the wind speed is high, the wind blows to the shielding gas exhaust port and disperses the shielding gas, affecting the shielding gas's protection of the molten pool, thereby affecting the welding formation and weld quality.

[0005] Therefore, a wheel rim automatic welding device is proposed. Summary of the invention

[0006] In view of the problem mentioned above or in the prior art that factories often use window ventilation and cooperate with multiple large floor fans for ventilation and cooling, when the wind speed is high, the wind blows to the shielding gas exhaust port, disperses the shielding gas, affects the shielding gas's protection of the molten pool, and thus affects the welding formation and weld quality, the present invention is proposed.

[0007] Therefore, the object of the present invention is to provide a wheel rim automatic welding device.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising: A welding device comprising a mounting base on which a laser welding head and an exhaust head are mounted; The protective mechanism includes an annular block and a baffle plate arranged on the side of the mounting seat, the annular block is fixedly sleeved on the mounting seat, the annular block is provided with a cooling component for cooling the laser welding head, the annular block is provided with a first slide groove, and the first slide groove is provided with a plurality of sliding components for adjusting the position of the baffle plate and the cooling component.

[0009] As a preferred solution of the automatic welding device for wheel rims of the present invention, the cooling assembly is arranged in a water tank on the side of the annular block close to the shielding plate, a water pump is arranged on the water tank, a first pipe is connected to the water pump, a ring sleeve is connected to one end of the first pipe away from the water pump, and the ring sleeve is connected to the inside of the water tank through a second pipe; The ring sleeve can be rotatably sleeved on the surface of the laser welding head.

[0010] As a preferred solution of the automatic welding device for wheel steel rims of the present invention, wherein: a guide groove is provided inside the ring sleeve, and the guide groove is in a tortuous ring shape; The first pipeline and the second pipeline are both connected to the interior of the guide groove.

[0011] As a preferred solution of the automatic wheel rim welding device of the present invention, a heat sink is provided on the water tank, one end of the heat sink is located inside the water tank, and the other end of the heat sink is located outside the water tank.

[0012] As a preferred solution of the automatic welding device for wheel steel rims of the present invention, the sliding assembly includes a first sliding block arranged inside the first sliding groove, a side of the first sliding block close to the shielding plate is connected to a vertical rod, and an end of the vertical rod away from the first sliding block passes through the first sliding groove; One end of the plurality of vertical rods away from the first sliding block is rotatably connected to the shielding plate and the water tank respectively.

[0013] As a preferred solution of the automatic wheel rim welding device of the present invention, the side of the shielding plate away from the laser welding head is arc-shaped.

[0014] As a preferred solution of the automatic wheel rim welding device of the present invention, the protection mechanism further includes a positioning component arranged on the vertical rod for locking the sliding component.

[0015] As a preferred solution of the automatic welding device for wheel rims of the present invention, the positioning assembly includes a mounting groove opened on the slider and the vertical rod, the two mounting grooves are connected, a second slider is arranged inside the mounting groove, both ends of the second slider pass through the mounting groove, and a first inclined surface and a first plane are arranged on the second slider.

[0016] As a preferred solution of the automatic welding device for wheel rims of the present invention, the positioning assembly further comprises a positioning rod slidably arranged inside the mounting groove, and the positioning rod is provided with a second inclined surface and a second flat surface; The annular block is provided with a plurality of positioning grooves, and the plurality of positioning grooves are matched with the positioning rods.

[0017] As a preferred solution of the automatic wheel rim welding device of the present invention, the two ends of the second sliding block that are far away from each other are connected with stop plates, and the sides of the two stop plates that are close to each other are both arc-shaped and match the outer surface of the vertical rod.

[0018] The beneficial effects of the automatic welding device for wheel rims of the present invention are as follows: through the setting of the cooling component, the laser welding head can be cooled to avoid the problem of internal short circuit of the laser welding head or rapid aging of the laser welding head caused by excessive temperature; through the setting of the sliding component, the position of the baffle can be adjusted according to the position of the wind, thereby increasing the wind blocking effect and avoiding the airflow from blowing away the protective gas discharged from the exhaust head, thereby affecting the production welding of the wheel rims; at the same time, the blocked wind blows toward the cooling component, realizing the reuse of wind power, and there is no need to use other cooling devices to cool the water inside the water tank, thus saving resources and accelerating the cooling of the water inside the cooling component. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the automatic welding device for wheel rims; Figure 2 It is a schematic diagram of the overall structure of the protection mechanism of the automatic welding device for wheel rims; Figure 3 It is a schematic diagram of the cooling assembly structure of the wheel rim automatic welding device; Figure 4 This is a schematic diagram of the internal structure of the ring sleeve of the wheel rim automatic welding device; Figure 5 It is a schematic diagram of the structure of the sliding assembly of the automatic welding device for the wheel rim; Figure 6 This is a schematic diagram of the positioning component structure of the wheel rim automatic welding device.

[0021] In the figure: 1. welding equipment; 11. mounting base; 12. laser welding head; 13. exhaust head; 2. Protective mechanism; 21. Ring block; 211. Positioning groove; 22. Shielding plate; 23. Cooling assembly; 231. Water tank; 2311. Heat sink; 232. Water pump; 233. First pipeline; 234. Ring sleeve; 2341. Guide groove; 235. Second pipeline; 24. First slide groove; 25. Sliding assembly; 251. First slider; 252. Vertical rod; 26. Positioning assembly; 261. Mounting groove; 262. Second slider; 2621. Stop plate; 263. First inclined surface; 264. First plane; 265. Positioning rod; 266. Second inclined surface; 267. Second plane. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] Example 1, reference Figures 1 to 6 , is the first embodiment of the present invention, which provides an automatic wheel rim welding device, which can achieve the effect of cooling the laser welding head 12, and includes a welding device 1, which includes a mounting seat 11, on which the laser welding head 12 and the exhaust head 13 are mounted, and the mounting seat 11 is provided with a protective mechanism 2, the protective mechanism 2 includes an annular block 21 and a baffle plate 22 arranged on the side of the mounting seat 11, the annular block 21 is fixedly sleeved on the mounting seat 11, and a cooling component 23 for cooling the laser welding head 12 is arranged on the annular block 21, and a first slide groove 24 is opened on the annular block 21, and a plurality of sliding components 25 for adjusting the positions of the baffle plate 22 and the cooling component 23 are arranged inside the first slide groove 24; The mounting seat 11 is connected to a manipulator or a slide rail. When the wheel rim is produced, if the two ends of the steel plate wound into a ring are welded to make it into a ring, it only needs to be installed on the slide rail, and the mounting seat 11 is driven by the slide rail to move linearly. When the wheel is repaired or the turning point between the right ring body and the outer side of the right supporting web is welded, the manipulator can be used for operation; The laser welding head 12 is used to weld the places that need to be connected. The laser welding head 12 has a built-in lens for focusing the transmitted laser beam into a very small area, thereby obtaining a higher power and melting the metal. Among them, the exhaust head 13 is connected with a pipe, and one end of the pipe away from the exhaust head 13 is connected to the gas cylinder. The protective gas of the gas cylinder is sprayed to the welding area through the pipe and the exhaust head 13 to protect the molten metal from the influence of oxygen and other reactive elements in the surrounding environment, and to prevent oxidation and pollution. The protective gas is argon. Due to its inertness and high thermal conductivity, argon is the most commonly used protective gas in laser welding, and is suitable for welding of materials such as austenitic stainless steel, carbon steel and titanium. It can also be helium, nitrogen or carbon dioxide; The annular block 21 is detachably connected to the mounting seat 11 through a thread. When the temperature is low, such as in winter, the fan is not used, and the windows are basically closed, the air volume is small, and the protective mechanism 2 can be unused. At this time, the protective mechanism 2 can be removed to reduce the gravity borne by the slide rail or the manipulator, thereby increasing its service life; The shielding plate 22 is translucent. During the laser welding process, due to the high temperature and high energy, the material particles in the welding area will be evaporated and suspended in the air to form extremely fine solid particles or gel. The shielding plate 22 also has a protective effect. By setting the shielding plate 22 to be translucent, it is convenient for the staff to observe the welding situation. At the same time, the shielding plate 22 can be hollow inside to reduce its weight. By setting the cooling component 23, the laser welding head 12 can be cooled to avoid the problem of internal short circuit of the laser welding head 12 or rapid aging of the laser welding head 12 caused by excessive temperature. By setting the sliding component 25, the baffle plate 22 can be adjusted according to the position of the wind, thereby increasing the wind blocking effect and avoiding the airflow from dispersing the protective gas discharged from the exhaust head 13, thereby affecting the production welding of the wheel rim. At the same time, the blocked wind blows toward the cooling component 23 to accelerate the cooling of the water inside the cooling component 23.

[0024] Further, the cooling assembly 23 is provided in a water tank 231 on one side of the annular block 21 close to the baffle plate 22, a water pump 232 is fixedly mounted on the water tank 231, a first pipe 233 is connected to the water pump 232, an end of the first pipe 233 away from the water pump 232 is connected to a ring sleeve 234, the ring sleeve 234 is connected to the inside of the water tank 231 through a second pipe 235, and the ring sleeve 234 can be rotatably sleeved on the surface of the laser welding head 12; The water pump 232 is electrically controlled, and the water pump 232 can be turned on and off by inputting data on the controller.

[0025] Furthermore, a guide groove 2341 is provided inside the annular sleeve 234, and the guide groove 2341 is annular and winding, and the first pipe 233 and the second pipe 235 are both connected to the inside of the guide groove 2341; By setting the guide groove 2341 to be circuitous, water can flow longer inside the ring sleeve 234, thereby increasing the heat absorption effect.

[0026] Furthermore, a heat sink 2311 is provided on the water tank 231, one end of the heat sink 2311 is located inside the water tank 231, and the other end of the heat sink 2311 is located outside the water tank 231; When the water in the guide groove 2341 flows out to the inside of the water tank 231 through the second pipe 235 , the temperature of the water in the water tank 231 increases. The heat sink 2311 is used to cool the water in the water tank 231 .

[0027] In this embodiment, the water tank 231 can be fixed on the mounting base 11 or the annular block 21; When in use, when the laser welding head 12 is in use, turn on the water pump 232, the water pump 232 pumps out the water inside the water tank 231, and transports it to the guide groove 2341 inside the ring sleeve 234 through the first pipe 233, the water moves inside the guide groove 2341, takes away the temperature of the surface of the laser welding head 12, cools the laser welding head 12, and avoids excessive temperature causing internal short circuit of the laser welding head 12 or causing rapid aging of the laser welding head 12. After completion, the water flows back to the water tank 231 through the guide groove 2341, so that the water temperature inside the water tank 231 rises, and the water inside the water tank 231 is cooled through the heat sink 2311.

[0028] Example 2, reference Figures 2 to 6 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a sliding assembly 25 of the wheel steel rim automatic welding device, which solves the problem of adjusting the position of the shielding plate 22. The sliding assembly 25 includes a first slider 251 arranged inside the first slide groove 24, and a vertical rod 252 is connected to the side of the first slider 251 close to the shielding plate 22. The end of the vertical rod 252 away from the first slider 251 passes through the first slide groove 24, and the ends of the multiple vertical rods 252 away from the first slider 251 are rotatably connected to the shielding plate 22 and the water tank 231 respectively; Among them, the cross-section of the first slide groove 24 is in an inverted "convex" shape, and the first slider 251 can slide inside the first slide groove 24, and the first slider 251 is preferably a circular block. By limiting the shape of the first slider 251, it is convenient for the first slider 251 to move inside the first slide groove 24, and at the same time, the service life of the device is increased. If the first slider 251 is formed into other shapes, such as a rectangle, the first slide groove 24 is a rectangle when viewed from a top view, that is, it is composed of two vertical grooves and two horizontal grooves. Since the length and width of the rectangle are different, the contact surface sizes of the first slider 251 and the horizontal groove and vertical groove of the first slide groove 24 are different, which makes the gravity borne by the multiple first sliders 251 different. When used for a long time, it is easy to cause damage. The first slider 251 is set to be circular, so that when the first slider 251 moves in the vertical groove or the horizontal groove, the contact area between the first slider 251 and the first slide groove 24 is always equal, which increases the service life of the first slider 251 and facilitates the first slider 251 to pass through the corner below the slide groove.

[0029] Furthermore, the side of the shielding plate 22 away from the laser welding head 12 is arc-shaped, and the arc-shaped setting facilitates wind diversion.

[0030] Furthermore, the protection mechanism 2 also includes a positioning assembly 26 disposed on the vertical rod 252 for locking the sliding assembly 25 .

[0031] Different from the first embodiment, in this embodiment, the cooling assembly 23 is connected to the annular block 21 through the sliding assembly 25, so that the cooling assembly 23 can be adjusted along with the position adjustment of the shielding plate 22, so that the shielding plate 22 can dissipate heat to the heat sink 2311 in any direction, and the heat sink 2311 is horizontally arranged; In this embodiment, the vertical rods 252 of the plurality of sliding assemblies 25 can be connected by a connecting plate, that is, when one of the vertical rods 252 moves, the other vertical rods 252 move accordingly; In this embodiment, the positioning assembly 26 can be fixed in any manner, such as bolt fixing, clamp fixing, etc.; The rest of the structure is the same as that of Example 1.

[0032] When in use, the shielding plate 22 is pulled according to the direction of the wind. The shielding plate 22 drives the first sliding block 251 to move inside the first sliding groove 24 through the vertical rod 252, and the water tank 231 moves therewith. When the shielding plate 22 moves to the appropriate position, the vertical rod 252 is locked by the positioning assembly 26, thereby achieving the locking of the shielding plate 22 and the water tank 231, so that the shielding plate 22 can be adjusted according to the wind direction to block the wind in all directions, thereby preventing the airflow from dispersing the protective gas discharged from the exhaust head 13, thereby affecting the normal production and welding of the wheel rim. At the same time, the blocked wind blows toward the heat sink 2311, blowing off the dust adhered to the surface of the heat sink 2311 to prevent the dust from affecting the heat dissipation of the heat sink 2311. At the same time, the wind accelerates the flow of air around the heat sink 2311, increasing the heat dissipation effect of the heat sink 2311, thereby accelerating the cooling of the water inside the water tank 231.

[0033] In summary, in this embodiment, a sliding device is provided, and the position of the baffle plate 22 is adjusted manually, so that the baffle plate 22 can be adjusted according to the wind direction to block the wind in all directions. The manual method is better for adjusting the position of the baffle plate 22. Compared with electric adjustment, although electric adjustment can directly set data, unlike other visible things, wind is invisible. Through electric control adjustment, the staff can only feel the general direction of the wind first, and then go to the control system to make adjustments based on judgment. The normal control system is a certain distance away from the welding point. If the judgment is wrong, it may even require repeated adjustments for many times to adjust the baffle plate 22 to the optimal position, which is time-consuming and labor-intensive. Manual adjustment allows the worker's hand to directly feel the device, so that the position of the baffle plate 22 can be directly and quickly adjusted. The wind blocked by the baffle can also act on the heat sink 2311 to quickly cool the water inside the water tank 231, thereby realizing the reuse of wind power. There is no need to use other cooling devices to cool the water inside the water tank 231, thus saving resources.

[0034] Example 3, reference Figures 2 to 6 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a positioning assembly 26 of the automatic welding device for wheel steel rims, which solves the problem of the sliding assembly 25 and the locking of the baffle plate 22 and the cooling assembly 23 connected to the sliding assembly 25. The positioning assembly 26 includes a mounting groove 261 opened on the first slider 251 and the vertical rod 252, the two mounting grooves 261 are connected, a second slider 262 is arranged inside the mounting groove 261, both ends of the second slider 262 pass through the mounting groove 261, the second slider 262 is provided with a first inclined surface 263 and a first plane 264, and also includes a positioning rod 265 slidably arranged inside the mounting groove 261, the positioning rod 265 is provided with a second inclined surface 266 and a second plane 267, and a plurality of positioning grooves 211 are opened on the annular block 21, and the plurality of positioning grooves 211 are matched with the positioning rod 265; Among them, the first inclined surface 263 matches the second inclined surface 266, the second slider 262 is rectangular, and the mounting groove 261 matches the second slider 262, ensuring that the positioning rod 265 can only move up and down in the vertical direction, avoiding the second inclined surface 266 and the first inclined surface 263 from being misaligned.

[0035] Furthermore, both ends of the second sliding block 262 that are away from each other are connected with stopper plates 2621, and the sides of the two stopper plates 2621 that are close to each other are both arc-shaped and match the outer surface of the vertical rod 252; Among them, the setting of the stop plate 2621 ensures the stable connection between the second slider 262 and the vertical rod 252 to avoid detachment. At the same time, the distance between the two stop plates 2621 matches the moving trajectory of the second slider 262, that is, when one of the stop plates 2621 contacts the side of the vertical rod 252, the positioning rod 265 is located inside the mounting groove 261, and the vertical rod 252 can drive the first slider 251 to slide normally inside the first slide groove 24. When the other stop plate 2621 contacts the side of the vertical rod 252, the positioning rod 265 passes through the mounting groove 261 and enters the positioning groove 211. Under the restriction of the positioning groove 211, the vertical rod 252 cannot move, that is, the baffle plate 22 or the water tank 231 connected thereto cannot move.

[0036] The rest of the structure is the same as that of Example 2.

[0037] When in use, when the shielding plate 22 is adjusted to a suitable position, by pushing one of the stop plates 2621, the stop plate 2621 drives the second slider 262 to slide inside the installation groove 261, and the first inclined surface 263 on the second slider 262 contacts the second inclined surface 266 on the positioning rod 265, driving the positioning rod 265 to rise, so that the end of the positioning rod 265 away from the second slider 262 passes through the installation groove 261 and enters the corresponding positioning groove 211. When the stop plate 2621 is in contact with the side of the vertical rod 252, at this time, the first flat surface 264 on the second slider 262 contacts the second flat surface 267 on the positioning rod 265, thereby locking the vertical rod 252. In this state, due to the wind acting on the shielding plate 22, a thrust is applied to the shielding plate 22, and the shielding plate 22 will transmit the thrust to the positioning rod 265 through the vertical rod 252, so that the positioning rod 265 and the positioning groove 211 are more closely fitted; On the contrary, by pushing another stop plate 2621, the first plane 264 and the second plane 267 are misaligned. Under the action of gravity of the positioning rod 265, the positioning rod 265 returns to the inside of the installation groove 261 to unlock the vertical rod 252. At this time, the shielding plate 22 can be pushed to move and the position of the shielding plate 22 can be adjusted.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A wheel rim automatic welding device, characterized in that: include, A welding device (1), comprising a mounting seat (11), wherein a laser welding head (12) and an exhaust head (13) are mounted on the mounting seat (11); The protection mechanism (2) comprises an annular block (21) and a shielding plate (22) arranged on the side of a mounting seat (11), the annular block (21) being fixedly sleeved on the mounting seat (11), the annular block (21) being provided with a cooling assembly (23) for cooling the laser welding head (12), the annular block (21) being provided with a first slide groove (24), and a plurality of sliding assemblies (25) for adjusting the positions of the shielding plate (22) and the cooling assembly (23) being arranged inside the first slide groove (24).

2. The automatic wheel rim welding device according to claim 1, characterized in that: The cooling assembly (23) is arranged on a water tank (231) on a side of the annular block (21) close to the baffle plate (22); a water pump (232) is arranged on the water tank (231); a first pipe (233) is connected to the water pump (232); an end of the first pipe (233) away from the water pump (232) is connected to a ring sleeve (234); and the ring sleeve (234) is connected to the interior of the water tank (231) via a second pipe (235); The ring sleeve (234) is rotatably sleeved on the surface of the laser welding head (12).

3. The automatic wheel rim welding device according to claim 2, characterized in that: A guide groove (2341) is provided inside the annular sleeve (234), and the guide groove (2341) is in a ring-shaped, winding shape; The first pipe (233) and the second pipe (235) are both in communication with the interior of the guide groove (2341).

4. The automatic wheel rim welding device according to claim 3, characterized in that: The water tank (231) is provided with a heat sink (2311), one end of the heat sink (2311) is located inside the water tank (231), and the other end of the heat sink (2311) is located outside the water tank (231).

5. The automatic wheel rim welding device according to claim 4, characterized in that: The sliding assembly (25) comprises a first sliding block (251) arranged inside the first sliding groove (24); a side of the first sliding block (251) close to the shielding plate (22) is connected to a vertical rod (252); an end of the vertical rod (252) away from the first sliding block (251) passes through the first sliding groove (24); One end of the plurality of vertical rods (252) away from the first sliding block (251) is rotatably connected to the shielding plate (22) and the water tank (231) respectively.

6. The automatic wheel rim welding device according to claim 5, characterized in that: The side of the shielding plate (22) away from the laser welding head (12) is arc-shaped.

7. The automatic wheel rim welding device according to claim 6, characterized in that: The protection mechanism (2) further comprises a positioning assembly (26) arranged on the vertical rod (252) and used for locking the sliding assembly (25).

8. The automatic wheel rim welding device according to claim 7, characterized in that: The positioning assembly (26) comprises a mounting groove (261) formed on the slider and the vertical rod (252), the two mounting grooves (261) being connected, a second slider (262) being arranged inside the mounting groove (261), both ends of the second slider (262) passing through the mounting groove (261), and a first inclined surface (263) and a first plane (264) being arranged on the second slider (262).

9. The automatic wheel rim welding device according to claim 8, characterized in that: The positioning assembly (26) further comprises a positioning rod (265) slidably arranged inside the mounting groove (261), and the positioning rod (265) is provided with a second inclined surface (266) and a second flat surface (267); The annular block (21) is provided with a plurality of positioning grooves (211), and the plurality of positioning grooves (211) are matched with the positioning rods (265).

10. The automatic wheel rim welding device according to claim 9, characterized in that: Both ends of the second sliding block (262) that are away from each other are connected to stop plates (2621), and the sides of the two stop plates (2621) that are close to each other are both arc-shaped and match the outer surface of the vertical rod (252).

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