A welding platform for metal product processing

CN122875989APending Publication Date: 2026-10-09JIANGSU LINGRUIYONG HEAVY IND EQUIP CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Application Number
CN202611073201.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-20
Publication Date
2026-10-09

AI Technical Summary

Technical Problem

[0006]本发明的目的在于提供一种金属制品加工用焊接平台,以解决上述背景技术中提出现有的焊接平台使用时依赖人工进行操作,上下料与焊接工序无法并行,整体加工效率低、人工劳动力度大的问题

Benefits of technology

[0022]采用上述技术方案,通过打磨结构的设计能够对焊接处进行打磨处理,利用电动推杆伸缩控制活动架、打磨辊水平运动,以调节打磨辊与焊接点进行接触打磨。

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122875989A_ABST
    Figure CN122875989A_ABST
Patent Text Reader

Abstract

The application belongs to the technical field of welding devices, and discloses a welding platform for metal product processing, which comprises a frame, a conveying belt installed at the middle part of the frame, a fixed support frame at the rear side of the frame, an XY-axis sliding table installed at the upper end of the support frame, a welding assembly installed at the side surface of the XY-axis sliding table, first supports arranged at the two sides of the support frame, a feeding and discharging frame connected to the middle parts of the two groups of first supports, a sliding groove formed at the two ends of the feeding and discharging frame, a sliding block connected to the inside of the sliding groove, a clamping plate connected to the outside of the sliding block, and a limiting shaft fixed to the inner wall of the feeding and discharging frame. The welding platform for metal product processing can flexibly adjust the height of the feeding and discharging frame to adapt to the working positions of the conveying belt and the welding assembly through the cooperation of the electric sliding table and the first support. In combination with the meshing structure of the transmission gear and the gear ring driven by the first motor, the feeding and discharging frame can realize rotary multi-station switching. The welding platform can realize the synchronous feeding and discharging and welding of workpieces, reduce the time consumed by the feeding and discharging of workpieces, and effectively improve the overall processing efficiency.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a welding platform for metal product processing. Background Technology

[0002] In the field of metal product processing, welding is one of the core processes for connecting and forming components. Its processing efficiency and finished product quality directly affect production benefits. As the manufacturing industry transforms towards automated and continuous production, traditional welding operation mode has gradually exposed many shortcomings and is difficult to meet the needs of modern production. The specific problems are as follows.

[0003] However, existing welding platforms for metal product processing still have certain problems in use: A metal product welding platform, as described in Chinese Patent Application No. CN202420341114.1, includes a support table. Two support plates are fixedly connected to the upper surface of the support table. A first double-ended screw is rotatably connected to the side surfaces of the two support plates. Two limiting plates are screwed onto the outer surfaces of the first double-ended screw. The lower surfaces of the two limiting plates slide relative to the upper surface of the support table. A clamping plate is slidably connected to the inner top surface of each of the two limiting plates. Two clamping plates are slidably connected to the upper surface of the support table.

[0004] However, existing metal product welding platforms rely on manual loading and unloading of workpieces and are mostly single-station designs. Loading and unloading cannot be carried out in parallel with welding processes, resulting in low overall processing efficiency and increased labor intensity for operators.

[0005] To address the aforementioned issues, an innovative design was developed based on the existing welding platform used for metal product processing. Summary of the Invention

[0006] The purpose of this invention is to provide a welding platform for metal product processing, so as to solve the problems mentioned in the background art that existing welding platforms rely on manual operation, cannot perform loading and unloading and welding processes in parallel, have low overall processing efficiency and high manual labor intensity.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a welding platform for metal product processing, comprising a frame and a conveyor belt installed in the middle, a support frame fixed to the rear side of the frame, an XY-axis slide table installed at the upper end of the support frame, and welding components installed on the side of the XY-axis slide table. The support frame is provided with first brackets on both sides, and the upper and lower material frames are connected in the middle of the two sets of first brackets. Slide grooves are opened at both ends of the upper and lower material frames. Slide blocks are connected inside the slide grooves and clamping plates are connected to the outside of the slide blocks. The inner wall of the loading and unloading frame is fixed with a limiting shaft, the limiting shaft is connected to a transmission plate, the transmission plates are arranged in a cross pattern, the middle inner wall of the loading and unloading frame is connected to a guide plate, and the two ends of the transmission plate are respectively connected to the slider and the guide plate. The upper and lower material frames are connected to a bidirectional lead screw on the inner wall of the middle section. The bidirectional lead screw is connected to a guide plate. A first gear is connected to the middle of the bidirectional lead screw. A transmission shaft passes through the middle of the upper and lower material frames. A second gear is connected to the middle of the transmission shaft. The second gear and the first gear form a meshing structure.

[0008] Preferably, the rear side of the first bracket is fixedly connected to the support frame, the two ends of the loading and unloading frame are fixed with limit rings, and the front end of the first bracket is rotatably connected to the limit rings.

[0009] Using the above technical solution, the upper and lower material frames can be supported and limited by two sets of first brackets. After the first brackets are connected to the upper and lower material frames, the upper and lower material frames can rotate normally.

[0010] Preferably, a first motor is mounted on the side of the first bracket on the left, and a transmission gear is connected to the shaft end of the first motor. A toothed ring is connected to the side of the limiting ring on the left, and the toothed ring meshes with the transmission gear.

[0011] Using the above technical solution, the first motor can drive the transmission gear to rotate. The transmission gear cooperates with the gear ring to realize the rotation of the loading and unloading frame, thereby realizing the position switching of multiple workstations and realizing continuous loading and unloading welding operations.

[0012] Preferably, the lower end of the slider is designed in the shape of an "I" and the slider slides in conjunction with the groove. The clamping plate is designed in the shape of an "L" and is symmetrically distributed at the four corners of the upper and lower material frames.

[0013] By adopting the above technical solution, the sliding block and clamping plate are kept stable by the cooperation of the sliding groove, and the workpiece can be clamped and fixed when the two sets of clamping plates cooperate.

[0014] Preferably, the limiting shaft is rotatably connected to the middle of the transmission plate, both ends of the transmission plate are connected to guide shafts, the inner end of the slider is provided with a limiting groove, the outer guide shaft of the transmission plate extends into the limiting groove, and the limiting groove and the guide shaft are slidably engaged. The guide plate slides in conjunction with the inner wall of the upper and lower material frames. A guide groove is provided in the middle of the guide plate. The inner guide shaft of the transmission plate extends into the guide groove, and the right guide shaft slides in conjunction with the guide groove.

[0015] Preferably, the guide groove is provided in two sets, and the two sets of guide grooves are distributed in a figure-eight shape.

[0016] Using the above technical solution, the guide shaft connected to the left end of the two sets of transmission plates cooperates with the guide groove to realize the positioning of the slider and the clamping plate. When the rotation angle of the two sets of transmission plates changes, the distance between the two sets of sliders and the clamping plate can be adjusted. The right end of the transmission plate cooperates with the guide groove through the guide shaft, and the guide groove can be used to limit the angle of the two sets of transmission plates. When the guide plate moves horizontally, the position of the figure-eight guide groove changes, and the angle of the two sets of transmission plates can be adjusted.

[0017] Preferably, the loading and unloading frame is rotatably connected to the bidirectional lead screw, and both ends of the bidirectional lead screw are threadedly connected to the guide plate.

[0018] By adopting the above technical solution, the position of the guide plate can be restricted by the bidirectional lead screw, and the position of the two sets of guide plates can be adjusted when the bidirectional lead screw rotates, thereby controlling the rotation of the transmission plate and realizing the adjustment of the distance between the two sets of clamping plates.

[0019] Preferably, an electric slide is fixed on both sides of the support frame, a second support is provided on the outside of the first support, the rear side of the second support is slidably connected to the electric slide, a second motor is fixed on the side of the second support on the left side, the shaft end of the second motor is fixed to the transmission shaft, and elliptical holes are opened at both ends of the upper and lower material frames, through which the transmission shaft passes.

[0020] Using the above technical solution, the second motor and the transmission shaft can be supported by the second bracket. When the second motor rotates, it drives the transmission shaft and the second gear to rotate. The second gear cooperates with the meshing first gear to realize the rotational transmission of the bidirectional lead screw.

[0021] Preferably, a movable frame is provided on the front side of the middle part of the support frame, the front end of the movable frame is connected to a grinding roller, an electric push rod is connected to the rear side of the support frame, the front end of the electric push rod passes through the support frame and is connected to the movable frame, a grinding motor is connected to the lower end of the movable frame, and the shaft end of the grinding motor is connected to the grinding roller.

[0022] By adopting the above technical solution, the welding joint can be ground through the design of the grinding structure. The horizontal movement of the movable frame and the grinding roller is controlled by the extension and retraction of the electric push rod, so as to adjust the contact grinding between the grinding roller and the welding point.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: the welding platform for metal product processing can flexibly adjust the height of the loading and unloading frame to adapt to the working position of the conveyor belt and welding components through the cooperation of the electric slide table and the first support; combined with the transmission gear and gear ring meshing structure driven by the first motor, the loading and unloading frame can realize rotary multi-station switching; it can realize the synchronous operation of workpiece loading and unloading and welding processes, reduce the time consumed by workpiece loading and unloading, and effectively improve the overall processing efficiency.

[0024] 1. With the help of the transmission shaft, gear set and bidirectional screw transmission structure driven by the second motor, the guide plate can be moved horizontally. By using the cooperation of the figure-eight guide groove and the transmission plate guide shaft, the rotation angle of the cross-distributed transmission plates can be controlled. Then, by the sliding limit of the slider and the slide groove, the spacing of the "L" shaped clamping plates symmetrically distributed at the four corners can be adjusted synchronously, so as to achieve fast and stable clamping of the workpiece. 2. A grinding structure consisting of an electric push rod, a movable frame, a grinding motor, and a grinding roller is integrated at the support frame. After welding, there is no need to transfer the workpiece. The contact position between the grinding roller and the weld can be directly adjusted by the electric push rod. The grinding roller is driven by the grinding motor to repair the weld slag and protrusions. This design realizes the integrated connection of welding and grinding processes, saves workpiece transfer time and labor costs, and further ensures the quality of finished products and processing efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the invention from another perspective; Figure 3 This is a schematic diagram of the support frame and electric slide structure of the present invention; Figure 4 This is a schematic diagram of the electric slide table and the first support structure of the present invention; Figure 5 This is a schematic diagram of the first motor and transmission gear structure of the present invention; Figure 6 This is a schematic diagram of the transmission shaft and the second support structure of the present invention; Figure 7 This is a schematic diagram of the bidirectional lead screw and the first gear structure of the present invention; Figure 8 This is a schematic diagram of the limiting shaft and transmission plate structure of the present invention; Figure 9 This is a schematic diagram of the slider and clamping plate structure of the present invention; Figure 10 This is a schematic diagram of the movable frame and grinding roller structure of the present invention; Figure 11 This is a schematic diagram of the electric push rod and movable frame structure of the present invention.

[0026] In the diagram: 1. Frame; 2. Conveyor belt; 3. Support frame; 4. XY axis slide; 5. Welding assembly; 6. Electric slide; 7. First support; 8. Loading / unloading frame; 9. Slide groove; 10. Slider; 11. Clamping plate; 12. Limiting ring; 13. Gear ring; 14. First motor; 15. Transmission gear; 16. Limiting shaft; 17. Transmission plate; 18. Limiting groove; 19. Guide plate; 20. Guide groove; 21. Bidirectional lead screw; 22. First gear; 23. Transmission shaft; 24. Second support; 25. Second motor; 26. Second gear; 27. Movable frame; 28. Grinding roller; 29. ​​Electric push rod. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1, please refer to Figure 1 - Figure 9 This invention provides a technical solution: a welding platform for metal product processing, comprising a frame 1 and a conveyor belt 2 installed in the middle, a support frame 3 fixed to the rear side of the frame 1, an XY-axis slide 4 installed on the upper end of the support frame 3, and welding components 5 installed on the side of the XY-axis slide 4; the frame 1 supports the conveyor belt 2, which transports the metal products to be welded, facilitating the loading and unloading of workpieces before and after welding. The support frame 3 fixed to the rear end of the frame 1 supports and fixes the XY-axis slide 4, and the XY-axis slide 4 allows for adjustment of the front-to-back and vertical positions of the welding components 5.

[0029] Limiting rings 12 are fixed at both ends of the upper and lower material frames 8, and the front end of the first bracket 7 is rotatably connected to the limiting rings 12; the support frame 3 is provided with first brackets 7 on both sides, and the upper and lower material frames 8 are connected in the middle of the two sets of first brackets 7. The upper and lower material frames 8 are provided with sliding grooves 9 at both ends, and the sliding grooves 9 are connected to the sliding blocks 10 inside, and the sliding blocks 10 are connected to the clamping plates 11 on the outside; the lower end of the sliding block 10 is designed in the shape of "I", and the sliding block 10 slides with the sliding groove 9. The clamping plates 11 are designed in the shape of "L" and are symmetrically distributed at the four corners of the upper and lower material frames 8. A limiting shaft 16 is fixed to the inner wall of the loading / unloading frame 8. The limiting shaft 16 is connected to a transmission plate 17, which is arranged crosswise. A guide plate 19 is connected to the inner wall of the middle part of the loading / unloading frame 8. The two ends of the transmission plate 17 are connected to the slider 10 and the guide plate 19, respectively. The limiting shaft 16 is rotatably connected to the middle part of the transmission plate 17. Both ends of the transmission plate 17 are connected to guide shafts. A limiting groove 18 is opened on the inner side of the slider 10. The outer guide shaft of the transmission plate 17 extends into the limiting groove 18, and the limiting groove 18 slides with the guide shaft. The guide plate 19 slides with the inner wall of the middle part of the loading / unloading frame 8. A guide groove 20 is opened in the middle of the guide plate 19. The inner guide shaft of the transmission plate 17 extends into the guide groove 20, and the right guide shaft slides with the guide groove 20. Two sets of guide grooves 20 are provided, and the two sets of guide grooves 20 are distributed in a figure-eight shape. A bidirectional lead screw 21 is connected to the inner wall of the middle section of the loading / unloading frame 8, and the bidirectional lead screw 21 is connected to the guide plate 19. The loading / unloading frame 8 is rotatably connected to the bidirectional lead screw 21, and both ends of the bidirectional lead screw 21 are threadedly connected to the guide plate 19. The loading / unloading frame 8, the slider 10, and the clamping plate 11 constitute a clamping structure for loading / unloading. Limiting rings 12 are fixed at both ends of the loading / unloading frame 8. The first bracket 7 cooperates with the limiting rings 12 to achieve the support and limitation of the loading / unloading frame 8. Clamping structures are provided on all four sides of the loading / unloading frame 8, which facilitates multi-station switching for continuous welding operations during the rotation of the loading / unloading frame 8.

[0030] Multiple sets of sliders 10 and clamping plates 11 are controlled and restricted through the cooperation of transmission plates 17 and guide shafts. Two sets of transmission plates 17 arranged in an X-shape are rotatably connected to the inner wall of the loading and unloading frame 8 through limiting shafts 16. The guide shaft connected to the outer end of the transmission plate 17 cooperates with the limiting groove 18 opened at the lower end of the slider 10. The guide shaft can slide inside the limiting groove 18. When the cross angle changes during the rotation of the two sets of transmission plates 17, the distance between the two sets of sliders 10 and clamping plates 11 changes. The guide shaft connected to the right end of the two sets of transmission plates 17 cooperates with the guide groove 20 opened inside the guide plate 19, which can restrict the angle of the transmission plate 17. The middle of the two sets of guide plates 19 is connected to a bidirectional lead screw 21. When the bidirectional lead screw 21 rotates, it controls the relative or opposite direction of the two sets of guide plates 19, so that the position of the guide groove 20 changes. After the position of the figure-eight guide groove 20 changes, it can control the angle of the two sets of transmission plates 17, thereby controlling the two sets of clamping plates 11.

[0031] The rear side of the first bracket 7 is fixed to the support frame 3; the left side of the first bracket 7 is equipped with a first motor 14, the shaft end of the first motor 14 is connected to the transmission gear 15, the left side of the limiting ring 12 is connected to the gear ring 13, and the gear ring 13 is meshed with the transmission gear 15; the first motor 14 is a stepper motor, which can precisely control the rotation angle of the loading and unloading frames 8. The first motor 14 can control the rotation of the transmission gear 15. The transmission gear 15 cooperates with the gear ring 13, and can drive the gear ring 13 and the loading and unloading frames 8 to rotate when the first motor 14 rotates, so as to realize the switching of work positions. A first gear 22 is connected to the middle of a bidirectional lead screw 21. A drive shaft 23 passes through the middle of the upper and lower material frames 8, and a second gear 26 is connected to the middle of the drive shaft 23. The second gear 26 and the first gear 22 form a meshing structure. Electric slides 6 are fixed on both sides of the support frame 3. A second support 24 is set on the outside of the first support 7. The rear side of the second support 24 is slidably connected to the electric slide 6. A second motor 25 is fixed to the side of the second support 24 on the left side. The shaft end of the second motor 25 is fixed to the drive shaft 23. Elliptical holes are opened at both ends of the upper and lower material frames 8, and the drive shaft 23 passes through the elliptical holes. The rear end of the first support 7 is connected to the electric slide 6 connected to the side of the support frame 3. The height of the structure of the second support 24, drive shaft 23, second gear 26 and first motor 14 can be adjusted by using the electric slide 6. The meshing between the first gear 22 and the second gear 26 can be disengaged when the upper and lower material frames 8 rotate. When the electric slide table 6 controls the second support 24 to move downwards, the second gear 26 connected to the middle of the drive shaft 23 moves downwards and meshes with the first gear 22 at the bottom. The second motor 25 rotates, controlling the rotation of the drive shaft 23, thus controlling and adjusting the clamping mechanism at the bottom to clamp the workpiece. During unloading, the second motor 25 rotates in the opposite direction to release the workpiece from clamping. Unloading and loading operations can be performed synchronously with workpiece welding, improving welding efficiency and ease of operation. Multiple clamping structures can continuously switch positions during the rotation of the loading / unloading frame 8, and in conjunction with the up-and-down movement of the second support 24, different positions can be controlled and switched.

[0032] Example 2, please refer to Figure 10 - Figure 11This invention provides another technical solution: Based on Embodiment 1, this embodiment adds a grinding structure, enabling grinding and polishing of the welded area after workpiece welding. A movable frame 27 is installed on the front side of the middle of the support frame 3. The front end of the movable frame 27 is connected to a grinding roller 28. An electric push rod 29 is connected to the rear side of the support frame 3. The front end of the electric push rod 29 passes through the support frame 3 and connects to the movable frame 27. A grinding motor is connected to the lower end of the movable frame 27, and the shaft end of the grinding motor is connected to the grinding roller 28. A grinding structure is provided on the rear side of the loading and unloading frame 8. The grinding roller 28 is supported by the movable frame 27, and the movable frame 27 is supported by the electric push rod 29. When the electric push rod 29 extends or retracts, it can adjust the position of the grinding roller 28, reasonably controlling the distance between the grinding roller 28 and the workpiece welding point. The grinding roller 28 is powered by the grinding motor. This structure ensures the processing quality of metal products.

[0033] The contents not described in detail in this specification are prior art known to those skilled in the art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding platform for processing metal products, comprising a frame (1) and a conveyor belt (2) installed in the middle of the frame, wherein a support frame (3) is fixed at the rear side of the frame (1), an XY-axis sliding table (4) is installed at the upper end of the support frame (3), and a welding assembly (5) is installed at the side of the XY-axis sliding table (4), characterized in that: first brackets (7) are arranged on both sides of the support frame (3), a loading and unloading frame (8) is connected between the middle parts of the two groups of first brackets (7), sliding grooves (9) are formed at both ends of the loading and unloading frame (8), sliding blocks (10) are connected inside the sliding grooves (9), and clamping plates (11) are connected to the outer sides of the sliding blocks (10); a limiting shaft (16) is fixed on the inner wall of the middle part of the loading and unloading frame (8), the limiting shaft (16) is connected with transmission plates (17), the transmission plates (17) are arranged in a crossed manner, a guide plate (19) is connected to the inner wall of the middle part of the loading and unloading frame (8), and both ends of the transmission plates (17) are respectively connected with the sliding blocks (10) and the guide plate (19); a bidirectional screw rod (21) is connected to the inner wall of the middle part of the loading and unloading frame (8), the bidirectional screw rod (21) is connected with the guide plate (19), a first gear (22) is connected to the middle part of the bidirectional screw rod (21), a transmission shaft (23) penetrates through the middle part of the loading and unloading frame (8), a second gear (26) is connected to the middle part of the transmission shaft (23), and the second gear (26) and the first gear (22) form an engagement structure.

2. The welding platform for metal product processing according to claim 1, characterized in that: the rear side of the first bracket (7) is fixedly connected with the support frame (3), limiting rings (12) are fixed at both ends of the loading and unloading frame (8), and the front end of the first bracket (7) is rotatably connected with the limiting rings (12).

3. The welding platform for metal product processing according to claim 2, characterized in that: a first motor (14) is installed on the side of the first bracket (7) on the left side, a transmission gear (15) is connected to the shaft end of the first motor (14), a gear ring (13) is connected to the side of the limiting ring (12) on the left side, and the gear ring (13) is in meshed connection with the transmission gear (15).

4. The welding platform for metal product processing according to claim 1, characterized in that: the lower end of the sliding block (10) is designed in an "I" shape, the sliding block (10) is in sliding fit with the sliding groove (9), the clamping plate (11) is designed in an "L" shape, and the clamping plates (11) are symmetrically distributed at four corners of the loading and unloading frame (8).

5. The welding platform for metal product processing according to claim 1, characterized in that: the limiting shaft (16) is rotatably connected with the middle part of the transmission plates (17), both ends of the transmission plates (17) are connected with guide shafts, a limiting groove (18) is formed at the inner end of the sliding block (10), the guide shaft at the outer side of the transmission plates (17) extends into the limiting groove (18), and the limiting groove (18) is in sliding fit with the guide shaft; the guide plate (19) is in sliding fit with the inner wall of the middle part of the loading and unloading frame (8), a guide groove (20) is formed in the middle part of the guide plate (19), the guide shaft at the inner side of the transmission plates (17) extends into the guide groove (20), and the guide shaft on the right side is in sliding fit with the guide groove (20).

6. The welding platform for metal product processing according to claim 5, characterized in that: two groups of the guide grooves (20) are provided, and the two groups of guide grooves (20) are distributed in a splayed shape.

7. The welding platform for metal product processing according to claim 1, characterized in that: the loading and unloading frame (8) is rotatably connected with the bidirectional screw rod (21), and both ends of the bidirectional screw rod (21) are in threaded connection with the guide plate (19).

8. A welding platform for metal product processing according to claim 7, characterized in that: Electric slides (6) are fixed on both sides of the support frame (3). A second support (24) is set on the outside of the first support (7). The rear side of the second support (24) is slidably connected to the electric slide (6). A second motor (25) is fixed on the side of the second support (24) on the left. The shaft end of the second motor (25) is fixed to the transmission shaft (23). Elliptical holes are opened at both ends of the upper and lower material frames (8). The transmission shaft (23) passes through the elliptical holes.

9. A welding platform for metal product processing according to claim 8, characterized in that: The support frame (3) is provided with a movable frame (27) at the front of the middle section. The front end of the movable frame (27) is connected to the grinding roller (28). The support frame (3) is connected to the rear side of the electric push rod (29). The front end of the electric push rod (29) passes through the support frame (3) and is connected to the movable frame (27). The lower end of the movable frame (27) is connected to the grinding motor. The shaft end of the grinding motor is connected to the grinding roller (28).

Citation Information

Patent Citations

  • Metal product welding platform

    CN221833618U