Hub multi-point collaborative welding equipment with anti-splashing structure

Abstract

The invention discloses hub multi-point collaborative welding equipment with an anti-splashing structure, and relates to the technical field of hub multi-point collaborative welding, the hub multi-point collaborative welding equipment comprises a rotary welding box and placing frames, and the placing frames are symmetrically and fixedly arranged at the top of the rotary welding box and located on the two sides of a channel through bolts; the single-side base plate is pushed to move along with the transmission assembly, a toothed bar is meshed with transmission teeth, sliding of the bottom base plate is completed, the distance between rotary welding assemblies on the base plates on the two sides and the welding area of a hub assembly is adjusted, and the contact height of a limiting air cylinder and the base plate is controlled according to position distribution of reinforcing ribs on a hub; the rotary welding assemblies on the upper side and the lower side and the hub assembly are adaptively adjusted, meanwhile, a transmission belt is adopted for driving, a sliding plate slides between limiting plate sets and completes automatic alternation at the same time, a space is reserved on the other side for material exchange while hubs on the rotary clamping assemblies on the single side are welded, and the multi-point cooperative welding efficiency of the whole hubs is adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-point collaborative welding of wheels, and more specifically to a multi-point collaborative welding device for wheels with a splash-proof structure. Background Technique

[0002] During the driving of a vehicle, the wheel needs to bear various complex stresses from the road surface, such as the torque and lateral force generated when the vehicle accelerates, decelerates, and turns, as well as the impact load received when driving on an uneven road surface. Welding reinforcing ribs can effectively disperse the stress, enhance the overall structural strength of the wheel, and reduce the risk of deformation and damage; For the automated welding work of the wheel and the reinforcing rib, according to the patent text with the publication number CN209667252U, the protruding parts at both ends of the reinforcing rib are paired and welded to the fillet rectangular holes of the web. The reinforcing rib has a supporting effect on the axial direction of the web, and the bottom of the reinforcing rib is welded to the wheel, which can transfer the radial force of the web to the wheel and increase the bending strength of the web. Before welding the two, it is necessary to clean the surfaces of the wheel and the reinforcing rib to remove impurities such as oil stains, rust, and oxide scales, ensure the cleanliness of the welding part, and improve the welding quality. Then, according to the design requirements, use appropriate tooling fixtures to accurately fix the reinforcing rib at the corresponding position of the wheel, ensure that the assembly gap and position accuracy between the two meet the welding process requirements, and perform welding operations according to the selected welding method and process parameters. After welding, it is also necessary to conduct an appearance inspection of the welded joint to check for defects such as pores, cracks, and incomplete penetration; Using a robotic arm to cooperate with a laser welding machine for rotary welding, and cooperating with a semi-automatic loading and flipping device is the most common. The overall welding efficiency is low, the regular structure of the combination of the reinforcing rib and the wheel is not utilized for multi-point collaborative welding, and at the same time, unilateral welding flipping and loading and unloading are required, resulting in an increase in the standby downtime of the welding equipment and affecting the large-scale production of wheels; Therefore, we propose a multi-point collaborative welding device for wheels with a splash-proof structure. Summary of the Invention

[0003] The purpose of the present invention is to provide a multi-point collaborative welding device for wheels with a splash-proof structure to solve the problems raised in the above background technique; To achieve the above purpose, the present invention provides the following technical solution: A multi-point collaborative welding device for wheels with a splash-proof structure, including a rotary welding box and a placement rack. The placement racks are symmetrically fixed at the top of the rotary welding box and on both sides of the channel by bolts in a central symmetry manner. On both sides of the placement rack, a second backing plate and a first backing plate are symmetrically installed from bottom to top. The top of the placement rack is fixed with a transmission component by bolts. The output end of the transmission component penetrates the placement rack and is fixed to the top first backing plate. A second backing plate is installed on one side of the first backing plate, and a rotary welding component is fixed to the second backing plate by bolts; The inner wall of the bottom of the rotary welding box is evenly fixed with a limit plate group by welding. The top of the limit plate group is slidably connected with a rotary clamping assembly, and the bottom of the rotary clamping assembly is rotatably connected with an abutting column.

[0004] Further, a second backing plate is slidably connected to the bottom of the first backing plate at the top, and a return spring is sleeved and installed on the support column of the second backing plate. The top of the first backing plate at the bottom is fixedly connected to the second backing plate.

[0005] Further, racks are symmetrically fixed by welding on one side of the two first backing plates. A transmission gear is movably connected to one side of the placement rack through a bearing. The two racks are respectively meshed and connected with the transmission gear.

[0006] Further, a limit cylinder is fixedly connected to the top of the rotary welding box through bolts, and one end of the limit cylinder abuts against the second backing plate at the top.

[0007] Further, a first slide plate is slidably connected to the single-sided track of the limit plate group at the bottom of the rotary welding box. A rotary clamping assembly is fixed to the top of the first slide plate through bolts. The abutting column installed at the bottom of the rotary clamping assembly penetrates through the first slide plate and is perpendicular to the middle plate member of the limit plate group.

[0008] Further, a second slide plate is slidably connected to the side of the middle plate member of the limit plate group. A third slide plate is slidably connected to one side of the second slide plate. Rotary clamping assemblies are synchronously installed on the top of the third slide plate. A limit groove is formed in the single-sided plate member of the limit plate group. A limit wheel is fixedly connected to one side of the third slide plate, and the limit wheel is clamped with the limit groove.

[0009] Further, a rotating head is movably connected to the middle plate member of the limit plate group. Driving wheels are evenly and movably connected to the inner wall of the bottom of the rotary welding box and located between the limit plate groups. A transmission belt is sleeved and installed on the driving wheels. The first slide plate and the second slide plate are respectively fixed to both sides of the transmission belt.

[0010] The multi-point collaborative welding method for the hub with a splash-proof structure is as follows: Adjust the moving positions of the laser welding guns on both sides according to the hub pressing positions on the reinforcing ribs. First, fix the reinforcing ribs on the single-sided rotary clamping assembly, then sleeve the hub, and accompany the pressing mechanism to press and fix it. Subsequently, drive the single-group hub assembly to move to the bottom of the placement rack through the rotation of the transmission belt; The transmission assembly pushes the top pad plate 1 to move downward, and the bottom pad plate 1 moves upward synchronously through the engagement of the gear rod and the transmission gear. As the pad plate 1 and the bottom pad plate 2 descend, the installed rotary welding assembly begins to move and comes to the abutment position of the hub assembly. The limit cylinder is controlled to intercept the movement of the top pad plate 2, while the rotary welding assembly on the bottom pad plate 2 continues to move upward. The abutment distance between the welding gun on the bottom rotary welding assembly and the hub is observed. After controlling the position of the rotary welding assemblies and the hub assemblies on the upper and lower sides, the rotary clamping assembly is driven to rotate by the rotation of the rotary head, and the rotary welding assembly works to weld the hub and the reinforcement rib. After the welding is completed, the rotation of the transmission belt moves the rotating clamping assembly on the other side, and the rotating clamping assembly on the other side carries the welded hub to move away from the bottom to weld a new round of hub and reinforcement ribs.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, a multi-directional symmetrical welding structure is adopted and combined with the distribution of reinforcing ribs on the surface of the wheel hub to adjust the position depth of the rotary welding assembly, so as to realize adaptive welding distance adjustment and cooperate with the rotation of the wheel hub for multi-point coordinated welding. There is no need to flip and perform multi-point welding on both sides of the wheel hub at the same time, thereby improving the overall wheel hub welding efficiency. The transmission assembly promotes the movement of the single-side pad, and the gear rod is engaged with the transmission gear to complete the sliding of the bottom pad, adjust the distance between the rotary welding assembly and the wheel hub assembly on the pads on both sides, and control the contact height between the limit cylinder and the pad according to the position distribution of the reinforcing ribs on the wheel hub, so as to realize the adaptive adjustment of the rotary welding assembly and the wheel hub assembly on the upper and lower sides, and improve the double-sided welding effect of the wheel hub while having high flexibility; 2. In the present invention, a transmission belt is used for driving, and the slide plate automatically alternates while sliding between the limit plate groups, so that the hub welding on the single-sided rotating clamping assembly is realized while space is left on the other side for exchanging materials, which adapts to the multi-point coordinated welding efficiency of the entire hub, shortens the standby time of the welding mechanism, and improves the overall welding efficiency. At the same time, the rotating head installed between the limit plate groups is adapted to the abutment column at the bottom of the rotating clamping assembly to control the rotation of the clamping mechanism, thereby avoiding frequent dragging and damage to the connecting wires when the linearly connected rotating mechanism is alternately active. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of a multi-point coordinated welding device for a wheel hub with an anti-splash structure according to the present invention; Figure 2 This is a schematic diagram of the installation structure of the inner wall limit plate assembly of the spin welding box of the present invention; Figure 3 It is a front view schematic diagram of a wheel hub multi-point cooperative welding device with an anti-splash structure of the present invention; Figure 4 It is a top view schematic diagram of a wheel hub multi-point cooperative welding device with an anti-splash structure of the present invention; Figure 5 Schematic diagram of the symmetric setting of the first backing plate and the second backing plate on the placement rack of the present invention; Figure 6 Schematic diagram of the clamping structure between the bottom abutting wheel and the rotating head of the rotating clamping assembly of the present invention; Figure 7 Schematic diagram of the rotating head mounting structure on the middle plate member of the limit plate group of the present invention; Figure 8 Schematic diagram of the synchronous welding of the reinforcing ribs on the upper and lower sides of the multi-point collaborative welding equipment for hubs of the present invention.

[0013] In the figure: 1, rotary welding box; 2, placement rack; 3, transmission assembly; 4, first backing plate; 5, second backing plate; 6, rotary welding assembly; 7, rack; 8, transmission gear; 9, return spring; 10, limit cylinder; 11, limit plate group; 12, first slide plate; 13, rotary clamping assembly; 14, abutting column; 15, second slide plate; 16, third slide plate; 17, rotating head; 18, limit groove; 19, limit wheel; 20, transmission wheel; 21, transmission belt. Specific embodiments

[0014] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0015] Please refer to Figures 1-8 , the present invention provides a technical solution: Embodiment 1: The multi-point collaborative welding equipment for hubs with a splash-proof structure is as Figure 1 and Figure 2 shown. The multi-station placement rack 2 is installed at the top of the main rotary welding box 1. At the same time, an alternating loading mechanism is arranged between the placement racks 2, which is convenient for the assembly of the hub and the reinforcing rib, and is also conducive to discharging materials. According to the installation position of the reinforcing rib in the hub, multi-point collaborative welding is also carried out, and four points on the upper and lower sides are welded synchronously. Combined with the rotation of the rotary clamping assembly 13, the hub can be rotated half a circle to complete the overall welding work; For the rotary welding assemblies 6 installed on both sides of the placement rack 2, as Figure 5 shown, the first backing plate 4 and the second backing plate 5 are symmetrically installed on both sides of the placement rack 2. Among them, the second backing plate 5 is located inside, and the first backing plate 4 is located outside. The second backing plate 5 installed below the top first backing plate 4 is in sliding connection and is position-limited and abutted by the installed spring, while the second backing plate 5 is fixedly connected above the bottom first backing plate 4, and the rotary welding assembly 6 is uniformly installed on the second backing plate 5; The rotary welding assembly 6 consists of a rotary mechanism, a power system, a control system, a clamping and fixing device, and a welding execution component. It combines laser welding technology with rotating workpieces. The surface material of the workpiece is instantaneously heated above the melting point by the high energy of the laser beam to achieve welding, with advantages such as good processing stability, strong environmental protection, and low production cost; Taking the section formed by three points in the middle of the wheel hub as the symmetry plane, the reinforcing ribs are usually distributed on one side end face, such as Figure 8 shown. Therefore, it is required that there is a difference in the movement distances of the upper and lower rotary welding assemblies 6. The upper transmission gear 8 is movably connected through a bearing in the middle of the placement plate, and the toothed rods 7 extending from the upper and lower cushion plates 4 are respectively located on both sides of the transmission gear 8 and are meshed with the transmission gear 8. Along with the top transmission assembly 3 pushing the upper cushion plate 4 downward to slide, the transmission gear 8 is rotated through the unilateral toothed rod 7, and the movement of the lower cushion plate 4 is synchronously realized. The two cushion plates 5 on both sides move towards each other, and the distance between the two rotary welding assemblies 6 on both sides decreases. Since the top rotary welding assembly 6 reaches the welding position first, it is required that the cushion plate 5 at the top stops moving downward during the movement of the cushion plate 4. Therefore, a limit cylinder 10 is installed at the top of the rotary welding box 1, such as Figure 3 shown. By obtaining the descending distance of the top cushion plate 5, the height of the output end of the limit cylinder 10 is adjusted first. Along with the transmission assembly pushing the upper cushion plate 4 to slide, when the cushion plate 5 contacts the limit cylinder 10, an operation occurs where the cushion plate 5 remains stationary while the cushion plate 4 continues to move downward, which will not affect the lower cushion plate 4 pushing the cushion plate 5 upward. Thus, the asymmetric distribution state of the two rotary welding assemblies 6 on both sides of the reinforcing rib on the wheel hub during the rotation of the transmission gear 8 is achieved to adapt to the storage position of the reinforcing rib on the wheel hub, facilitating subsequent precise welding operations; Considering the subsequent reset of the two rotary welding assemblies 6 on both sides, the distance between the upper cushion plate 5 and the surface of the cushion plate 4 is controlled by the reset spring 9 sleeved on them. Along with the subsequent rotation of the wheel hub assembly, the welding work on both the upper and lower sides of the wheel hub is completed. Since laser welding is used, the amount of welding slag generated is relatively small. At the same time, affected by the shielding gas, a semi - enclosed cover can be installed on the welding side of the rotary welding box 1 later. The shielding gas blows away the small amount of metal vapor and spatter that may be generated during the welding process, which directly falls to the bottom of the rotary welding box 1. At the same time, the two rotary welding assemblies 6 on both sides are not vertically welded, thus avoiding laser contact between them. At the same time, relying on the tight pressing of the thickness of the reinforcing rib and the inner wall of the wheel hub, the problem of deformation of the reinforcing rib caused by simultaneous welding on both sides will not occur; By adopting multi-point collaborative welding on the upper and lower sides, high-speed welding of the inner reinforcement ribs of the wheel hub can be completed. Compared with the single-point welding method of completing the welding points one by one, the overall welding time is greatly shortened. In large-scale production, it can significantly improve the production speed and improve production efficiency. At the same time, when traditional welding switches between different welding points, it takes time for auxiliary operations such as positioning and adjusting welding parameters. Multi-point collaborative welding can reduce these auxiliary times by reasonably planning the welding path and sequence, making the welding process smoother and more efficient.

[0016] Embodiment 2: With multi-point collaborative efficient hub welding, the corresponding hub loading and unloading equipment speed should be matched. Compared with the single-station semi-automatic loading and unloading, the present application performs the installation of alternating components in the spin welding box 1, and also performs the installation of the rotating clamping component 13 on the double-station alternating component, so as to facilitate the fixing of the entire reinforcing rib and the hub; Usually, the reinforcing rib is first fixed to the rotating clamping assembly 13, and the rotating clamping assembly 13 is selected according to the shape of the reinforcing rib. The entire rotating clamping assembly 13 is similar to a multi-claw chuck structure, and a knob is installed on one side. By turning the knob, the inner claw is driven to slide on the disk surface, and the outer wall of the hub reinforcing rib is clamped and fixed. At this time, the entire hub is sleeved on the outside of the reinforcing rib and press-fitted using a special pressing mechanism. Then, the slide plate 12 and the slide plate 2 15 on the limit plate group 11 are movable to move the pre-fixed hub assembly to the welding area. like Figure 2 and Figure 4 As shown, a limit plate assembly 11 is installed on the inner wall of the bottom of the spin welding box 1. The main body of the limit plate assembly 11 is three plates. Figure 6 As shown, a slide plate 12 is slidably connected to the left plate, and a rotating clamping assembly 13 is fixed to the top of the slide plate 12 by bolts. At the same time, one side of the rotating clamping assembly 13 passes through the slide plate 12 and is rotatably connected to an abutment column 14, as shown in FIG. Figure 7 As shown, two protrusions are also provided at the bottom of the abutment column 14, and move on the middle plate member along with the sliding plate 12; The middle plate is slidably connected to the second plate 15, and the vertical side of the second plate 15 is also slidably connected to the third plate 16. A limiting wheel 19 is installed on one side of the third plate 16, and the limiting wheel 19 abuts against the upper limit groove 18 of the right plate. The storage height of the entire third plate 16 on the second plate 15 is controlled by sliding the second plate 15 and constraining the limiting groove 18, so that when it is connected with the first plate 12, the height of the rotating clamping assembly 13 installed on the third plate 16 is controlled to complete the alternation of the rotating assemblies on both sides; Since the bottom of the rotating clamping assemblies 13 on both sides are rotatably connected with the abutment columns 14, the abutment columns 14 are used to deflect and misalign to avoid affecting the alternating feeding of the hub assembly. For the installation of the entire abutment column 14, it is used to control the rotating clamping assembly 13 to rotate on the slide plate 12 and the slide plate 3 16. For this purpose, a rotary head 17 is movably connected to the middle plate of the limit plate group 11, such as Figure 7 As shown, there is a notch on the rotating head 17. When the bottom abutting column 14 of the rotating clamping assembly 13 moves into the notch inside the rotating head 17, the rotating head 17 rotates, which drives the entire rotating clamping assembly 13 to rotate, that is, to achieve multi-point welding on the hub assembly; In order to realize the alternating movement of the slide plate 12 and the slide plate 2 15 , a transmission wheel 20 is movably connected to the inner wall of the bottom of the spin welding box 1 , and a transmission belt 21 is mounted on the transmission wheel 20 . The transmission belt 21 is connected to the slide plate 12 and the slide plate 2 15 on both sides. The transmission belt 21 rotates forward and backward to drive the slide plate 12 and the slide plate 2 15 to slide on the inner side of the limit plate group 11 , and finally the rotating clamping components 13 on both sides are alternately loaded. While one side is welding, the other side is preparing or unloading the material, and the speed is matched with the entire multi-point collaborative welding mechanism to complete the efficient hub welding operation.

[0017] The working principle of the present invention is as follows: the moving position of the laser welding guns on both sides is adjusted according to the press-fitting position of the wheel hub on the reinforcing rib, the reinforcing rib is first fixed on the single-side rotating clamping assembly 13, and then the wheel hub is sleeved and pressed and fixed with the pressing mechanism, and then the single set of wheel hub assembly is driven to move to the bottom of the placement rack 2 by the rotation of the transmission belt 21; The transmission assembly 3 pushes the top pad 1 4 to move downward, and the gear rod 7 meshes with the transmission gear 8, so that the bottom pad 1 4 moves upward synchronously. As the pad 1 4 and the bottom pad 2 5 descend, the installed rotary welding assembly 6 starts to move and comes to the abutment position of the hub assembly. The limit cylinder 10 is controlled to intercept the movement of the top pad 2 5, while the rotary welding assembly 6 on the bottom pad 2 5 continues to move upward. The abutment distance between the welding gun on the bottom rotary welding assembly 6 and the hub is observed. After controlling the position of the rotary welding assembly 6 and the hub assembly on the upper and lower sides, the rotary head 17 is used to rotate and drive the rotary clamping assembly 13 to rotate, and the rotary welding assembly 6 works to weld the hub and the reinforcing rib. After the welding is completed, the rotation of the transmission belt 21 moves the rotating clamping assembly 13 on the other side, and the rotating clamping assembly 13 on the other side carries the welded hub to move away from the bottom to perform a new round of welding between the hub and the reinforcing rib.

[0018] The above content is only an example and illustration of the structure of the present invention. Those skilled in the art of this technology can make various modifications, supplements, or use similar methods to replace the described specific embodiments, as long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they shall fall within the protection scope of the present invention.

[0019] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0020] The above-disclosed preferred embodiments of the present invention are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art of this technology can better understand and utilize the present invention. The present invention is only limited by the claim book and its full scope and equivalents.

Claims

1. The multi-point collaborative welding equipment for wheels with a splash-proof structure includes a rotary welding box and a placement rack. The placement racks are symmetrically fixed at the top of the rotary welding box on both sides of the groove by bolts in a central symmetry manner, and it is characterized in that, Pad plate 2 and pad plate 1 are symmetrically installed on both sides of the placement rack from bottom to top, a transmission assembly is fixed on the top of the placement rack by bolts, the output end of the transmission assembly passes through the placement rack and is fixed to the top pad plate 1, pad plate 2 is installed on one side of the pad plate 1, and a rotary welding assembly is fixed on the pad plate 2 by bolts; The inner wall of the bottom of the spin welding box is evenly fixed with a limit plate group by welding, the top of the limit plate group is slidably connected to a rotary clamping assembly, and the bottom of the rotary clamping assembly is rotatably connected to an abutment column.

2. The multi-point collaborative welding equipment for a wheel hub with a splash-proof structure according to claim 1, characterized in that, The bottom of the pad one at the top is slidably connected with the pad two, and a return spring is installed on the support sleeve of the pad two, and the top of the pad one at the bottom is fixedly connected with the pad two.

3. The multi-point collaborative welding equipment for a wheel hub with a splash-proof structure according to claim 2, wherein, A gear rod is fixed to one side of the pads on both sides symmetrically through welding, and a transmission tooth is movably connected to one side of the placement frame through a bearing, and the gear rods on both sides are respectively meshed and connected with the transmission tooth.

4. The multi-point collaborative welding equipment for a wheel hub with a splash-proof structure according to claim 3, characterized in that, The top of the spin welding box is fixedly connected with a limit cylinder by bolts, and one end of the limit cylinder abuts against the two pads on the top.

5. The multi-point collaborative welding equipment for a wheel hub with a splash-proof structure according to claim 4, characterized in that, A slide plate 1 is slidably connected to a single-side track of the limiting plate group at the bottom of the spin welding box, a rotating clamping assembly is fixed to the top of the slide plate 1 by bolts, and an abutment column is installed at the bottom of the rotating clamping assembly, which penetrates the slide plate 1 and is perpendicular to the middle plate of the limiting plate group.

6. The multi-point collaborative welding device for a wheel hub with a splash-proof structure according to claim 5, characterized in that, The middle plate of the limiting plate group is slidably connected to the side of the slide plate two, and the slide plate two is slidably connected to the slide plate three on one side, and a rotating clamping assembly is synchronously installed on the top of the slide plate three. A limiting groove is provided on the single-side plate of the limiting plate group, and the single-side of the slide plate three is fixedly connected to the limiting wheel, and the limiting wheel is clamped in the limiting groove.

7. The hub multi-point collaborative welding equipment with a splash-proof structure according to claim 6, characterized in that, A spinning head is movably connected to the middle plate of the limiting plate group, a transmission wheel is evenly and movably connected to the bottom inner wall of the spin welding box and located between the limiting plate groups, a transmission belt is sleeved and installed on the transmission wheel, and the slide plate one and the slide plate two are respectively fixed to the two sides of the transmission belt.

8. The multi-point collaborative welding device for a wheel hub with a splash-proof structure according to claim 7, characterized in that, The multi-point coordinated welding method of the wheel hub with the anti-splash structure is as follows: According to the wheel hub press-fitting position on the reinforcing rib, the moving position of the laser welding guns on both sides is adjusted. The reinforcing rib is first fixed on the single-side rotating clamping assembly, and then the wheel hub is sleeved and pressed and fixed with the pressing mechanism. Then, the single set of wheel hub assembly is driven to move to the bottom of the placement rack through the rotation of the transmission belt; The transmission assembly pushes the top pad plate 1 to move downward, and the bottom pad plate 1 moves upward synchronously through the engagement of the gear rod and the transmission gear. As the pad plate 1 and the bottom pad plate 2 descend, the installed rotary welding assembly begins to move and comes to the abutment position of the hub assembly. The limit cylinder is controlled to intercept the movement of the top pad plate 2, while the rotary welding assembly on the bottom pad plate 2 continues to move upward. The abutment distance between the welding gun on the bottom rotary welding assembly and the hub is observed. After controlling the position of the rotary welding assemblies and the hub assemblies on the upper and lower sides, the rotary clamping assembly is driven to rotate by the rotation of the rotary head, and the rotary welding assembly works to weld the hub and the reinforcement rib. After the welding is completed, the rotation of the transmission belt moves the rotating clamping assembly on the other side, and the rotating clamping assembly on the other side carries the welded hub to move away from the bottom to weld a new round of hub and reinforcement ribs.

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