A welding device for sheet metal material

By designing a sheet metal welding device with limiting and synchronization components, automatic grinding and cleaning are achieved, solving the problems of low welding efficiency and lack of convenience, and ensuring welding quality and stability.

CN120734740BActive Publication Date: 2026-03-17SHANDONG TONGJUGUANG SHEET METAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-07-30
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

In the current sheet metal welding process, the welding surface needs to be manually ground smooth, which leads to low efficiency. Furthermore, slight bulges are prone to appear after welding, requiring additional processing and resulting in insufficient convenience.

Method used

A welding device for sheet metal materials has been designed, comprising a limiting component, an alignment device, and a synchronization component. It can automatically grind the welding surface of sheet metal parts and clean the weld area after welding, ensuring the stability of the alignment and grinding process.

Benefits of technology

It simplifies the work process, improves welding efficiency, avoids weld gaps and slight protrusions, and enhances welding quality and convenience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to sheet metal welding technical field, concretely for a kind of welding device of sheet metal material, including work table, the work table is equipped with the welding machine for welding, one side of the welding machine is equipped with two oblique symmetrical limit components, the limit component is equipped with locking assembly, the side end of each locking assembly is equipped with a alignment device, the alignment device is equipped with cooperation component, the alignment device includes alignment component and synchronous component.The present application works by limit component and alignment device, can automatically polish the welding surface of sheet metal part while cleaning welding place after welding, greatly improve the welding efficiency and convenience.
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Description

Technical Field

[0001] This invention relates to the field of sheet metal welding technology, specifically to a welding device for sheet metal materials. Background Technology

[0002] Sheet metal work is a comprehensive cold processing technology for thin metal sheets, including shearing, punching / cutting / combined cutting, bending, welding, riveting, splicing, and forming.

[0003] In existing technologies, when welding two sheet metal parts, it is usually necessary to manually grind the welding surfaces of the two sheet metal parts to avoid gaps during the butt joint. This process is cumbersome and inefficient. Furthermore, after aligning the two sheet metal parts and completing the welding, slight bulges often appear on the outer sides of the mating surfaces, requiring additional equipment to align and treat the surfaces to ensure welding quality. This lack of convenience is a problem. Therefore, there is a need for a device that can automatically grind the welding surfaces of sheet metal parts and clean the weld area after welding to avoid the problems of low welding efficiency and inconvenience. Summary of the Invention

[0004] The purpose of this invention is to provide a welding device for sheet metal materials to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: a welding device for sheet metal materials, including a workbench, a welding machine for welding is provided on the workbench, two obliquely symmetrically arranged limiting components are provided on one side of the welding machine, a locking component is provided on the limiting component, an alignment device is provided on the side end of each locking component, a mating component is provided on the alignment device, the alignment device includes an alignment component and a synchronization component, the alignment component is provided on one side of the locking component, and the synchronization component is provided on the side end of the alignment component.

[0005] Preferably, the limiting component includes a guide frame, the bottom of which is connected to the top of the workbench. A first limiting frame and a second limiting frame are slidably fitted on the side of the guide frame. The bottoms of both the first and second limiting frames are slidably fitted to the top of the workbench. A first spring telescopic rod is provided at the center of the side of the second limiting frame near the first limiting frame. The telescopic end of the first spring telescopic rod is connected to the side of the first limiting frame. Horizontally arranged movable telescopic rods are symmetrically arranged on both sides of the first spring telescopic rod. The telescopic ends of the movable telescopic rods are slidably disposed in the sliding groove of the first limiting frame.

[0006] Preferably, the telescopic end of the movable telescopic rod is symmetrically provided with spring clips, which are locked in the openings in the inner wall of the sliding groove, and the second limiting frame has a number of teeth evenly provided on the side away from the guide frame.

[0007] Preferably, the locking assembly includes a trigger post, which is disposed on the side of the second limiting frame away from the teeth. The end of the trigger post is located in the guide groove on the guide frame. The side of the guide frame away from the second limiting frame is provided with a clamping plate. The two ends of the clamping plate are movably connected to the side end of the guide frame through a second spring telescopic rod. The side of the clamping plate near the guide groove is provided with an arc-shaped part that cooperates with the trigger post. The other side of the clamping plate is provided with a slot. The side end of the first limiting frame is provided with a telescopic locking rod, which is located in the guide groove and slides in cooperation with it. The end of the telescopic locking rod can be locked into the slot.

[0008] Preferably, the alignment component includes a fan-shaped component, which is rotatably mounted on a workbench. The arc-shaped surface of the fan-shaped component faces the arc-shaped component. An arc-shaped slide rail is provided on the arc-shaped surface of the fan-shaped component. An arc-shaped toothed rod is slidably mounted on the arc-shaped slide rail. The toothed end of the arc-shaped toothed rod can mesh with a number of teeth. A hinge rod is hinged to the middle of the fan-shaped component. The other end of the hinge rod is hinged to the end of a rotating crank. The other end of the rotating crank is rotatably mounted on the workbench via a rotating shaft. The bottom of the rotating shaft is connected to the output end of a drive motor.

[0009] Preferably, the synchronization component includes a synchronization gear rotatably mounted on the worktable, the toothed end of the synchronization gear meshing with the toothed end of an arc-shaped toothed rod, the synchronization gear being located on one side of the guide frame, a rotating disk concentrically mounted below the synchronization gear and located below the worktable, a vertically mounted pull rod at the bottom of the rotating disk, a connecting rod on one side of the rotating disk, the end of the connecting rod being rotatably connected to the bottom of the worktable, a linkage groove being formed on the connecting rod, the pull rod being embedded in the linkage groove and slidably engaged with it, a mating groove being formed on the side end of the linkage groove and located on the connecting rod, a mating rod being slidably engaged in the mating groove, the top of the mating rod being connected to the bottom of the mating frame, and the mating frame being slidably engaged with the worktable.

[0010] Preferably, the mating assembly includes a mating link, which is located above the workbench and its end is connected to the top of the mating frame. The other end of the mating link is connected to the top of the grinding frame via a vertically arranged third spring telescopic rod. The grinding frame slides with the workbench. An L-shaped wedge is provided at the end of the grinding frame away from the mating link. Symmetrically arranged arc-shaped grinding components are movably connected to both sides of the grinding frame via damping springs.

[0011] Preferably, the side end of the workbench is provided with an abutting wedge frame that can cooperate with the L-shaped wedge rod. When the L-shaped wedge rod abuts against the abutting wedge frame, the grinding frame can be moved upward under the action of the third spring telescopic rod.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] In this invention, when using this device, the operator places the sheet metal parts to be processed on the side of a limiting component. Then, by controlling the alignment component, the two limiting components drive the two sheet metal parts to align with each other until they are in contact and pressed together. During the alignment process, a synchronous component grinds the contact surfaces of the two sheet metal parts to avoid gaps during the connection, simplifying the work steps and improving welding efficiency. After alignment, the position of the sheet metal parts is restricted, and the vertical surfaces of the two sheet metal parts are ground. The device is then moved above the sheet metal parts and pressed against the workpiece to maintain stability during welding. Welding is then performed, and after welding, the end of the limiting component away from the sheet metal parts is separated, and the synchronous component is reset. During the reset process, the outer side of the top welding area of ​​the sheet metal parts is cleaned until the locking component is reset. Then, the other part of the locking component is unlocked to complete the reset, thus unlocking the workpiece. This prevents slight protrusions on the outer sides of the two sheet metal parts where they meet, ensuring welding quality and improving ease of use.

[0014] In this invention, by using components such as limiting components and alignment devices in combination, the mating surfaces of two sheet metal parts can be driven to approach each other until they are aligned. During the alignment process, the mating surfaces of the sheet metal parts are polished by a synchronization component, thereby avoiding gaps during the mating process, simplifying the work steps and improving welding efficiency.

[0015] In this invention, through the coordinated use of components such as the alignment device and the mating assembly, as two sheet metal parts approach each other, the vertical surfaces of the two sheet metal parts are ground by an arc-shaped grinding tool until the bottom of the grinding frame abuts against the top of the sheet metal parts, providing a certain degree of fixation. After welding is completed, the outer side of the welding area on the top of the two sheet metal parts is cleaned. After cleaning, the workpiece is unlocked, thereby avoiding the occurrence of slight protrusions on the outer side of the two sheet metal parts that meet, thus ensuring welding quality, improving the convenience of use, facilitating the next welding work, and ensuring the continuity of work. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0018] Figure 3 This is a partial three-dimensional structural diagram of the present invention. Figure 1 ;

[0019] Figure 4 This is a partial three-dimensional structural diagram of the limiting component in this invention. Figure 1 ;

[0020] Figure 5 This is a partial cross-sectional view of the limiting component in this invention;

[0021] Figure 6 This is a partial three-dimensional structural diagram of the limiting component in this invention. Figure 2 ;

[0022] Figure 7 This is a partial three-dimensional structural diagram of the present invention. Figure 2 ;

[0023] Figure 8 This is a partial three-dimensional structural diagram of the present invention. Figure 3 ;

[0024] Figure 9 This is a partial three-dimensional structural diagram of the alignment device in this invention;

[0025] Figure 10 This is a schematic diagram of the partial explosion three-dimensional structure of the present invention;

[0026] Figure 11 This is a partial three-dimensional structural diagram of the components used in this invention.

[0027] In the diagram: 1. Workbench; 2. Welding machine; 3. Limiting assembly; 31. Guide frame; 32. First limiting frame; 33. Second limiting frame; 34. First spring telescopic rod; 35. Movable telescopic rod; 36. Sliding groove; 37. Spring catch; 38. Opening; 39. Tooth; 4. Locking assembly; 41. Trigger post; 42. Guide groove; 43. Clamping plate; 44. Second spring telescopic rod; 45. Arc-shaped component; 46. Bayonet; 47. Telescopic catch rod; 5. Alignment device; 51. Alignment assembly; 511. Fan-shaped component; 512. Arc-shaped slide rail 513. Arc-shaped toothed rod; 514. Hinge rod; 515. Rotating crank; 516. Rotating shaft; 517. Drive motor; 52. Synchronization assembly; 521. Synchronization gear; 522. Rotating disk; 523. Tie rod; 524. Connecting rod; 525. Linkage groove; 526. Mating groove; 527. Mating rod; 528. Mating frame; 6. Mating assembly; 61. Mating connecting rod; 62. Third spring telescopic rod; 63. Grinding frame; 64. L-shaped wedge rod; 65. Damping spring; 66. Arc-shaped grinding part; 67. Abutting wedge frame. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1 to 11 The present invention provides a technical solution: a welding device for sheet metal materials, including a workbench 1, a welding machine 2 for welding is provided on the workbench 1, two obliquely symmetrically arranged limiting components 3 are provided on one side of the welding machine 2, a locking component 4 is provided on the limiting component 3, and an alignment device 5 is provided on the side end of each locking component 4, a mating component 6 is provided on the alignment device 5, the alignment device 5 includes an alignment component 51 and a synchronization component 52, the alignment component 51 is provided on one side of the locking component 4, and the synchronization component 52 is provided on the side end of the alignment component 51.

[0030] In this embodiment, as Figures 1 to 9 As shown, the limiting component 3 includes a guide frame 31, the bottom of which is connected to the top of the workbench 1. A first limiting frame 32 and a second limiting frame 33 are slidably fitted on the side of the guide frame 31. The bottoms of the first limiting frame 32 and the second limiting frame 33 are slidably fitted to the top of the workbench 1. A first spring telescopic rod 34 is provided at the center of the side of the second limiting frame 33 near the first limiting frame 32. The telescopic end of the first spring telescopic rod 34 is connected to the side of the first limiting frame 32. Horizontally arranged movable telescopic rods 35 are symmetrically arranged on both sides of the first spring telescopic rod 34. The telescopic end of the movable telescopic rod 35 is slidably disposed in the sliding groove 36 of the first limiting frame 32.

[0031] The telescopic rod 35 is symmetrically provided with spring clips 37 on its telescopic end. The spring clips 37 are locked in the openings 38 on the inner wall of the sliding groove 36. The second limiting frame 33 is provided with a number of teeth 39 evenly on the side away from the guide frame 31.

[0032] The locking assembly 4 includes a trigger post 41, which is disposed on the side of the second limiting frame 33 away from the teeth 39. The end of the trigger post 41 is located in the guide groove 42 on the guide frame 31. The guide frame 31 is provided with a clamping plate 43 on the side away from the second limiting frame 33. The two ends of the clamping plate 43 are movably connected to the side end of the guide frame 31 through a second spring telescopic rod 44. The side of the clamping plate 43 near the guide groove 42 is provided with an arc-shaped part 45 that cooperates with the trigger post 41. The other side of the clamping plate 43 is provided with a slot 46. The side end of the first limiting frame 32 is provided with a telescopic locking rod 47. The telescopic locking rod 47 is located in the guide groove 42 and slides with it. The end of the telescopic locking rod 47 can be locked into the slot 46.

[0033] The alignment component 51 includes a fan-shaped component 511, which is rotatably mounted on the workbench 1. The arc-shaped surface of the fan-shaped component 511 faces the arc-shaped component 45. An arc-shaped slide rail 512 is provided on the arc-shaped surface of the fan-shaped component 511. An arc-shaped toothed rod 513 is slidably mounted on the arc-shaped slide rail 512. The toothed end of the arc-shaped toothed rod 513 can mesh with a number of teeth 39. A hinge rod 514 is hinged to the middle of the fan-shaped component 511. The other end of the hinge rod 514 is hinged to the end of a rotating crank 515. The other end of the rotating crank 515 is rotatably mounted on the workbench 1 via a rotating shaft 516. The bottom of the rotating shaft 516 is connected to the output end of a drive motor 517.

[0034] The synchronization component 52 includes a synchronization gear 521 rotatably mounted on the workbench 1. The toothed end of the synchronization gear 521 can mesh with the toothed end of the arc-shaped toothed rod 513. The synchronization gear 521 is located on one side of the guide frame 31. Below the synchronization gear 521, there is a rotating disk 522 concentrically mounted and located below the workbench 1. The bottom of the rotating disk 522 is provided with a vertically mounted pull rod 523. One side of the rotating disk 522 is provided with a connecting rod 524. The end of the connecting rod 524 is rotatably connected to the bottom of the workbench 1. A linkage groove 525 is provided on the connecting rod 524. The pull rod 523 is embedded in the linkage groove 525 and slides with it. The side end of the linkage groove 525 is provided with a mating groove 526 located on the connecting rod 524. A mating rod 527 is slidably fitted in the mating groove 526. The top of the mating rod 527 is connected to the bottom of the mating frame 528. The mating frame 528 slides with the workbench 1.

[0035] In this embodiment, as Figures 3 to 11As shown, the mating assembly 6 includes a mating link 61, which is located above the workbench 1 and its end is connected to the top of the mating frame 528. The other end of the mating link 61 is connected to the top of the grinding frame 63 via a vertically arranged third spring telescopic rod 62. The grinding frame 63 is slidably mated with the workbench 1. An L-shaped wedge rod 64 is provided at the end of the grinding frame 63 away from the mating link 61. Both sides of the grinding frame 63 are movably connected with symmetrically arranged arc-shaped grinding parts 66 via damping springs 65.

[0036] The workbench 1 is provided with a contact wedge frame 67 on its side end, which can cooperate with the L-shaped wedge rod 64. When the L-shaped wedge rod 64 contacts the contact wedge frame 67, the grinding frame 63 can be moved upward under the action of the third spring telescopic rod 62.

[0037] The invention provides the following usage method and advantages: A welding device for sheet metal materials, the working process of which is as follows:

[0038] like Figures 1 to 11 As shown, by controlling the operation of two drive motors 517, two rotating cranks 515 are driven to rotate. Under the action of the hinge rod 514, the two sector parts 511 are deflected in opposite directions, which in turn drives the arc-shaped toothed rod 513 to cooperate with the teeth 39, so that the first limit frame 32 and the second limit frame 33 slide along the guide frame 31. At this time, the movable telescopic rod 35 is locked into the opening 38 of the sliding groove 36 by the spring block 37, thereby bringing the mating surfaces of the two sheet metal parts closer to each other until they are aligned. During the alignment process, the mating surfaces of the sheet metal parts are polished by the synchronization component 52, thereby avoiding gaps during the mating, simplifying the work steps and improving the welding efficiency.

[0039] As the two sheet metal parts approach each other, the arc-shaped toothed rod 513 synchronously drives the synchronous gear 521 to rotate, causing the rotating disk 522 to rotate synchronously. Through the cooperation of the pull rod 523 and the linkage groove 525, the connecting rod 524 can swing at the bottom of the worktable 1. Then, under the cooperation of the mating groove 526 and the mating rod 527, the mating frame 528 moves along the direction of the worktable 1, thereby driving the mating connecting rod 61 to drive the grinding frame 63 to move along the direction of the worktable 1 towards the wedge-shaped frame 67. During the movement, the grinding frame 63 grinds the mating surfaces of the sheet metal parts. When the two sheet metal parts are mated, the first spring telescopic rod 34 enables the second limit frame 33 to continue to move. The device continues to move towards the first limiting frame 32, causing the L-shaped wedge rod 64 to engage with the contacting wedge frame 67. This causes the grinding frame 63 to move upward under the action of the third spring telescopic rod 62, grinding the vertical surfaces of the two sheet metal parts through the arc-shaped grinding part 66 until the bottom of the grinding frame 63 abuts against the top of the sheet metal parts, providing a certain degree of fixation. When the sheet metal parts are aligned, the telescopic locking rod 47 on the side of the first limiting frame 32 can be engaged with the locking slot 46, ensuring the first limiting frame 32 limits the sheet metal parts, thus ensuring stability during the welding process. Subsequently, the two sheet metal parts are welded by the welding machine 2, and after welding, the holding of the fan-shaped part 511... As the rotation continues, the arc-shaped toothed rod 513 slides along the arc-shaped slide rail 512. When the side end of the arc-shaped slide rail 512 abuts against the side end of the arc-shaped toothed rod 513, it drives the synchronous gear 521 to rotate. Through the cooperation of the rotating disk 522 and the pull rod 523, it drives the connecting rod 524 to deflect in the opposite direction to before, thereby driving the cooperating connecting rod 61 to move the grinding frame 63 along the top of the sheet metal parts, thereby cleaning the outer side of the welding area on the top of the two sheet metal parts. During this process, the second limiting frame 33 moves away from the first limiting frame 32 through the first spring telescopic rod 34, and after the movable telescopic rod 35 is stretched to its limit, the spring catch 37 disengages from the hole 38, causing the second limiting frame 33 to separate from the first limiting frame 32. After the grinding frame 63 finishes cleaning, the second limiting frame 33 drives the trigger post 41 to abut against the side end of the arc-shaped part 45, thereby driving the clamping plate 43 away from the guide frame 31 along the second spring telescopic rod 44, thereby driving the latch 46 away from the telescopic latch 47. Under the action of the first spring telescopic rod 34, the first limiting frame 32 quickly moves away from the sheet metal part along the guide frame 31 towards the second limiting frame 33, and causes the spring latch 37 on the movable telescopic rod 35 to engage in the opening 38, thereby unlocking the workpiece. This avoids the slight protrusion on the outer side of the two sheet metal parts that are joined together, thus ensuring the welding quality, improving the convenience of use, facilitating the next welding work, and ensuring the continuity of work.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sheet metal material welding device, comprising a workbench (1), wherein a welding machine (2) for welding is arranged on the workbench (1); characterized in that One side of the welding machine (2) is provided with two limit components (3) which are symmetrically arranged in a diagonal direction, and the limit components (3) are provided with locking components (4), and the side end of each locking component (4) is provided with an alignment device (5), and the alignment device (5) is provided with a matching component (6), and the alignment device (5) comprises an alignment component (51) and a synchronization component (52), and the alignment component (51) is arranged on one side of the locking component (4), and the synchronization component (52) is arranged on the side end of the alignment component (51). The synchronization component (52) comprises a synchronization gear (521) which is rotatably arranged on the workbench (1), and a rotating disc (522) which is concentrically arranged below the synchronization gear (521) and is located below the workbench (1), and the bottom of the rotating disc (522) is provided with a pull rod (523) which is vertically arranged, and one side of the rotating disc (522) is provided with a connecting rod (524), and the end of the connecting rod (524) is rotatably connected with the bottom of the workbench (1), and the connecting rod (524) is provided with a linkage groove (525), and the pull rod (523) is embedded in the linkage groove (525) and is in sliding fit with the linkage groove (525), and the side end of the linkage groove (525) is provided with a matching groove (526) and is located on the connecting rod (524), and the matching groove (526) is in sliding fit with a matching rod (527), and the top of the matching rod (527) is connected with the bottom of a matching frame (528). The matching component (6) comprises a matching connecting rod (61), and the matching connecting rod (61) is located above the workbench (1) and the end of the matching connecting rod (61) is connected with the top of the matching frame (528), and the other end of the matching connecting rod (61) is connected with the top of a polishing frame (63) through a third spring telescopic rod (62) which is vertically arranged, and the polishing frame (63) is in sliding fit with the workbench (1), and one end of the polishing frame (63) away from the matching connecting rod (61) is provided with an L-shaped wedge-shaped rod (64), and the two sides of the polishing frame (63) are movably connected with symmetrically arranged arc-shaped polishing pieces (66) through damping springs (65).

2. The apparatus for welding sheet metal material according to claim 1, wherein: The limit component (3) comprises a guide frame (31) which is connected with the top of the workbench (1), and the side end of the guide frame (31) is in sliding fit with a first limiting frame (32) and a second limiting frame (33), and the side center of the second limiting frame (33) close to the first limiting frame (32) is provided with a first spring telescopic rod (34), and the telescopic end of the first spring telescopic rod (34) is connected with the side end of the first limiting frame (32), and the two sides of the first spring telescopic rod (34) are symmetrically provided with horizontally arranged movable telescopic rods (35), and the telescopic end of the movable telescopic rod (35) is slidingly arranged in a sliding groove (36) of the first limiting frame (32).

3. The apparatus for welding sheet metal material according to claim 2, wherein: Symmetrically arranged on the telescopic end of the telescopic rod (35) are spring clamping blocks (37), which are clamped in the openings (38) in the inner wall of the sliding groove (36), and the second limiting frame (33) is uniformly provided with a plurality of teeth (39) on the side away from the guide frame (31).

4. The apparatus for welding sheet metal material according to claim 3, wherein: The locking assembly (4) comprises a trigger column (41) arranged on the side of the second limiting frame (33) away from the teeth (39), the end of the trigger column (41) is located in the guide groove (42) on the guide frame (31), the side of the guide frame (31) away from the second limiting frame (33) is provided with a clamping plate (43), the two ends of the clamping plate (43) are movably connected with the side end of the guide frame (31) through the second spring telescopic rod (44), the side of the clamping plate (43) close to the guide groove (42) is provided with an arc-shaped part (45) matched with the trigger column (41), the other side of the clamping plate (43) is provided with a bayonet (46), the side end of the first limiting frame (32) is provided with a telescopic clamping rod (47), the telescopic clamping rod (47) is located in the guide groove (42) and is in sliding cooperation with the guide groove (42), and the end of the telescopic clamping rod (47) can be clamped into the bayonet (46).

5. The apparatus of claim 4, wherein: The alignment assembly (51) comprises a sector-shaped part (511) rotatably arranged on the workbench (1), the arc-shaped surface of the sector-shaped part (511) faces the arc-shaped part (45), the arc-shaped surface of the sector-shaped part (511) is provided with an arc-shaped sliding rail (512), the arc-shaped sliding rail (512) is slidably provided with an arc-shaped toothed groove rod (513), the toothed groove end of the arc-shaped toothed groove rod (513) can be engaged with the plurality of teeth (39), the middle part of the sector-shaped part (511) is hingedly connected with a hinge rod (514), the other end of the hinge rod (514) is hingedly connected to the end of a rotating crank (515), the other end of the rotating crank (515) is rotatably arranged on the workbench (1) through a rotating shaft (516), the bottom of the rotating shaft (516) is connected with the output end of the driving motor (517), and the toothed groove end of the synchronous gear (521) can be engaged with the toothed groove end of the arc-shaped toothed groove rod (513).

6. The apparatus for welding sheet metal material according to claim 1, wherein: The side end of the workbench (1) is provided with a resisting wedge-shaped frame (67) capable of cooperating with the L-shaped wedge-shaped rod (64), when the L-shaped wedge-shaped rod (64) abuts against the resisting wedge-shaped frame (67), the polishing frame (63) can be moved upward under the action of the third spring telescopic rod (62).

Citation Information

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