A vehicle body welding fixture flipping device

Abstract

This utility model discloses a car body welding fixture flipping device, including support legs, with a device housing fixedly connected to one end of each support leg close to each other. Rotating rods are rotatably connected to the inner sides of both ends of the device housing. A flipping structure is located at the upper end of the device housing and includes a swing mechanism and a limiting mechanism. A clamping structure is located at the upper end of the flipping housing and includes an adjustment mechanism and a fixing mechanism. The advantages of this utility model compared to existing technologies are: it can fix the flipping housing when the machine is damaged, thereby improving the safety of the car body welding fixture flipping device and protecting the personal safety of workers; it can clamp car bodies of different lengths, thereby improving the practicality of the car body welding fixture flipping device.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing equipment technology, specifically a body welding fixture flipping device. Background Technology

[0002] Automotive body components are primarily manufactured from cold-rolled steel sheet stampings with good stamping and welding processes, which are then assembled and welded. This welding production involves large batches, high speeds, and high precision requirements for the assembled and welded parts. It often employs assembly line production methods with a high degree of mechanization and automation, utilizing a large amount of specialized equipment and tooling fixtures. Welding work is increasingly being performed by automatic welding machines and welding robots. With societal progress, rising labor costs, and decreasing robot prices, welding equipment will gradually move towards full automation. Laser welding will be widely used in automotive welding production lines. Therefore, low-energy, high-efficiency, non-toxic, and pollution-free welding equipment will be the future technological trend in automotive welding lines.

[0003] The prior art patent with publication number CN222520393U discloses a vehicle body welding fixture flipping device, including a rectangular outer shell. The top surface of the outer shell is provided with a connecting steel strip, the rear surface of the outer shell is provided with a motor box, the two sides of the outer shell are provided with columns, the bottom surface of the columns is provided with anti-slip mounting seats, the inner part of the outer shell is provided with a receiving groove, the receiving groove is provided with a flipping mechanism, and a clamping mechanism is provided below the flipping mechanism. Through the main gear and the auxiliary rotating wheel, the connecting plate flips in the same direction as the rotating rail, so that the connecting plate drives the clamping mechanism to flip as a whole, which facilitates the welding of the bottom by the workers. This effectively avoids the safety hazard of welders having to lie directly under the pipe when welding the bottom of the pipe, which can easily cause skin burns due to welding slag.

[0004] However, existing patents have the following drawbacks:

[0005] (1) The existing body welding fixture flipping device is not equipped with a safety device. When the flipping structure is damaged, the connecting plate causes the body to swing left and right on the clamping structure due to weight and inertia, which can easily threaten the personal safety of workers.

[0006] (2) Existing body welding fixture flipping devices cannot clamp vehicles of different lengths, thus requiring different signals for body welding fixture flipping devices when clamping vehicles of different lengths.

[0007] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0008] To solve the above problems, the technical solution of this utility model is: a car body welding fixture flipping device, including a flipping structure and a clamping structure, which solves the problem that the existing car body welding fixture flipping device does not have a safety device. When the flipping structure is damaged, the connecting plate causes the car body to swing left and right on the clamping structure due to weight and inertia, which can easily threaten the personal safety of workers. In addition, the car body welding fixture flipping device cannot clamp cars of different lengths, which means that different signals are required when clamping cars of different lengths.

[0009] Preferably, the support leg has a device housing fixedly connected to one end of each other, a rotating rod rotatably connected to the inner sides of both ends of the device housing, a flip shell fixedly connected to one end of each rotating rod, a sliding groove provided at the upper end of the flip shell, and a support plate fixedly connected to the lower end of the support leg.

[0010] A flipping structure is disposed at the upper end of the device housing, and the flipping structure includes a swinging mechanism and a limiting mechanism;

[0011] A clamping structure is provided at the upper end of the flip shell, and the clamping structure includes an adjustment mechanism and a fixing mechanism.

[0012] Furthermore, the swing mechanism includes a protective shell fixedly connected to the upper end of the device housing. A motor is fixedly connected to the upper end of the protective shell. A synchronous pulley is fixedly connected to the output end of the motor. A synchronous pulley is provided on one side of the synchronous pulley. A synchronous belt is meshed with one side of the surfaces of the synchronous pulley and the synchronous pulley. Both the synchronous pulley and the synchronous pulley are rotatably connected to the upper end of the device housing.

[0013] Furthermore, a connecting rod is fixedly connected to the lower ends of the first and second synchronous pulleys. A gear is fixedly connected to the lower end of the connecting rod. A gear is meshed with one end of the first gear. A fixed plate is rotatably connected to the lower ends of the second and first gears. The fixed plate is fixedly connected to the upper inner wall of the device housing. A lead screw is fixedly connected to the lower ends of the second and first gears. A threaded cylinder is threaded onto the surface of the lead screw. Two symmetrically arranged hinge blocks are fixedly connected to the lower ends of the threaded cylinder. A hinge block is hinged to one end of each hinge block that is close to the other. The hinge block is fixedly connected to the upper end of the flip shell.

[0014] Furthermore, the limiting mechanism includes a connecting cylinder fixedly connected to both ends of the device housing, a limiting ring slidably connected to the inner side of the connecting cylinder, an insert rod fixedly connected through the inner side of the limiting ring, the insert rod movably connected through the inner side of the device housing, and a limiting plate fixedly sleeved on the surface of the rotating rod.

[0015] Furthermore, a spring is provided between the limiting ring and the connecting cylinder.

[0016] Furthermore, the adjustment mechanism includes four L-shaped rods fixedly connected to the upper end of the flip shell. An adjustment plate is fixedly connected to one end of each L-shaped rod that is close to the other. An L-shaped groove is formed on the inner side of the adjustment plate. An L-shaped block is slidably connected to the inner side of the L-shaped groove. A sliding block is fixedly connected to the lower end of the L-shaped block. A second motor is fixedly connected to the upper end of the adjustment plate. A first swing plate is fixedly connected to the output end of the second motor. A second swing plate is rotatably connected to both ends of the first swing plate. One end of the second swing plate is rotatably connected to one end of the sliding block. A slider is fixedly connected to the lower end of the sliding block. The slider is slidably connected to the inner side of the groove.

[0017] Furthermore, the fixing mechanism includes a fixing shell fixedly connected to the lower end of the slider. A motor is fixedly connected to one end of the inner wall of the fixing shell. A bidirectional lead screw is fixedly connected to the output end of the motor. A mounting block is rotatably connected to one end of the bidirectional lead screw. One end of the mounting block is fixedly connected to the other end of the inner wall of the fixing shell. A limit block is fixedly sleeved on the surface of the bidirectional lead screw. The limit block is fixedly connected to the inner wall of the fixing shell. Two symmetrically arranged threaded blocks are threadedly connected to the surface of the bidirectional lead screw. A limit groove is opened at the lower end of the fixing shell. The lower end of the threaded block is slidably connected to the inner side of the limit groove. A clamping rod is fixedly connected to the lower end of the threaded block.

[0018] Furthermore, triangular plates are fixedly connected to the four corners of the lower end of the device housing, and one end of the triangular plates is fixedly connected to one end of the support leg.

[0019] The advantages of this invention compared to existing technologies are as follows:

[0020] (1) This utility model, through its flipping structure, allows the motor one to be started during use, causing the synchronous pulley one to rotate. This, via the synchronous belt, drives the synchronous pulley two to rotate, which in turn drives the connecting rod to rotate, which in turn drives the gear one to rotate, which in turn drives the gear two to rotate. This, in turn, drives the lead screw to rotate. Through the meshing of gear one and gear two, the lead screw at the lower end of gear one and the lead screw at the lower end of gear two rotate in opposite directions. When the threaded cylinder on the lead screw at the lower end of gear one rises, the threaded cylinder on the lead screw at the lower end of gear two falls, causing the flipping shell to flip, which in turn drives the clamping structure to flip. This allows the car body to rotate. When the rotating shell begins to rotate, it causes the rotating rod to rotate and the limiting plate to rotate. When the limiting plate contacts the insert rod, the insert rod, which has an inclined surface at one end, moves towards the limiting ring. This causes the limiting ring to slide inside the connecting cylinder, compressing the spring. When the limiting plate passes the insert rod, the spring rebounds, causing the insert rod to pop out. If the rotating structure is damaged, the rotation of the limiting plate will be limited by the insert rod, thus fixing the rotating shell. This improves the safety of the car body welding fixture rotating device and protects the personal safety of workers.

[0021] (2) This utility model uses a clamping structure. When in use, the motor is started to rotate the bidirectional lead screw, which causes the threaded block to slide relative to the limit slide groove, and the clamping rod to slide relative to the limit slide groove. The clamping rod can then clamp the car body. When clamping car bodies of different lengths, the motor is started to swing the swing plate. The swing plate, the L-shaped block, and the L-shaped slide groove drive the sliding block to slide relative to the limit slide groove, which in turn drives the fixed shell to slide relative to the limit slide groove. This allows the clamping rods to form different distances, enabling the clamping rods to clamp car bodies of different lengths. This allows the car body welding fixture flipping device to clamp car bodies of different lengths, thereby improving the practicality of the car body welding fixture flipping device. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the entire utility model. Figure 1 .

[0023] Figure 2 This is a three-dimensional schematic diagram of the entire utility model. Figure 2 .

[0024] Figure 3 This is a three-dimensional cross-sectional view of the present invention.

[0025] Figure 4 This is a three-dimensional schematic diagram of the flipping structure of this utility model.

[0026] Figure 5This is a three-dimensional schematic diagram of the clamping structure of this utility model.

[0027] Figure 6 This is an enlarged view of section A of this utility model.

[0028] As shown in the figure: 1. Support leg; 2. Device housing; 3. Rotating rod; 4. Flipping shell; 5. Slide groove; 6. Support plate; 7. Flipping structure; 71. Swinging mechanism; 711. Protective shell; 712. Motor 1; 713. Synchronous pulley 1; 714. Synchronous pulley 2; 715. Synchronous belt; 716. Connecting rod; 717. Gear 1; 718. Gear 2; 719. Fixing plate; 7110. Lead screw; 7111. Threaded cylinder; 7112. Hinge block 1; 7113. Hinge block 2; 72. Limiting mechanism; 721. Connecting cylinder; 722. Limiting ring; 723. Insert rod; 724. Spring; 725. Limiting plate; 8. Clamping structure; 81. Adjusting mechanism; 811. L-shaped rod; 812. Adjusting plate; 813. L-shaped groove; 814. L-shaped block; 815. Sliding block; 816. Motor II; 817. Swing plate I; 818. Swing plate II; 819. Slider; 82. Fixing mechanism; 821. Fixing shell; 822. Motor III; 823. Two-way lead screw; 824. Mounting block; 825. Limiting block; 826. Threaded block; 827. Clamping rod; 828. Limiting groove; 9. Triangular plate. Detailed Implementation

[0029] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0030] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0031] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0032] Example 1

[0033] A vehicle body welding fixture flipping device includes: a support leg 1, a device housing 2, a rotating rod 3, a flipping shell 4, a sliding groove 5, a support plate 6, a flipping structure 7, and a clamping structure 8. The device housing 2 is fixedly connected to one end of the support leg 1 that is close to each other. The rotating rod 3 is rotatably connected to the inner sides of both ends of the device housing 2. The flipping shell 4 is fixedly connected to one end of the rotating rod 3 that is close to each other. The upper end of the flipping shell 4 has a sliding groove 5. The lower end of the support leg 1 is fixedly connected to the support plate 6. In use, the support leg 1 can stably support the vehicle body welding fixture flipping device on the ground. The device housing 2 can protect the parts inside the vehicle body welding fixture flipping device. The support plate 6 can improve the stability of the vehicle body welding fixture flipping device.

[0034] The flipping structure 7 is located at the upper end of the device housing 2. The flipping structure 7 includes a swing mechanism 71 and a limiting mechanism 72. In use, the flipping structure 7 can fix the flipping housing 4 in case of an accident, thereby improving the safety of the vehicle body welding fixture flipping device and protecting the personal safety of workers.

[0035] The clamping structure 8 is located at the upper end of the flipping shell 4. The clamping structure 8 includes an adjustment mechanism 81 and a fixing mechanism 82. When in use, the clamping structure 8 can be used to clamp car bodies of different lengths, thereby improving the practicality of the car body welding fixture flipping device.

[0036] The swing mechanism 71 includes a protective shell 711 fixedly connected to the upper end of the device housing 2. A motor 712 is fixedly connected to the upper end of the protective shell 711. A synchronous pulley 713 is fixedly connected to the output end of the motor 712. A synchronous pulley 714 is provided on one side of the synchronous pulley 713. A synchronous belt 715 meshes with one side of the surfaces of the synchronous pulleys 713 and 714. Both the synchronous pulleys 713 and 714 are rotatably connected to the upper end of the device housing 2. A connecting rod 716 is fixedly connected to the lower ends of the synchronous pulleys 713 and 714. A gear 717 is fixedly connected to the lower end of the connecting rod 716. A gear 718 meshes with one end of the gear 717. The gear 718 is rotatably connected to the lower end of the gear 717. A fixing plate 719 is fixedly connected to the upper inner wall of the device housing 2. A lead screw 7110 is fixedly connected to the lower ends of gear two 718 and gear one 717. A threaded cylinder 7111 is threaded onto the surface of the lead screw 7110. Two symmetrically arranged hinge blocks 7112 are fixedly connected to the lower end of the threaded cylinder 7111. A hinge block 7113 is hinged to one end of the hinge blocks 7112 that is close to each other. The hinge block 7113 is fixedly connected to the upper end of the flip shell 4. The limiting mechanism 72 includes connecting cylinders 721 fixedly connected to both ends of the device housing 2. A limiting ring 722 is slidably connected to the inner side of the connecting cylinder 721. A rod 723 is fixedly and through-connected to the inner side of the limiting ring 722. The rod 723 is movably and through-connected to the outer side of the device housing. Inside the shell 2, a limiting plate 725 is fixedly sleeved on the surface of the rotating rod 3. A spring 724 is provided between the limiting ring 722 and the connecting cylinder 721. When in use, starting the motor 712 causes the synchronous pulley 713 to start rotating. Through the synchronous belt 715, the synchronous pulley 714 starts rotating, which in turn causes the connecting rod 716 to start rotating, which in turn causes the gear 717 to start rotating, which in turn causes the gear 718 to start rotating, which in turn causes the lead screw 7110 to start rotating. Through the meshing of gear 717 and gear 718, the lead screw 7110 at the lower end of gear 717 and the lead screw 7110 at the lower end of gear 718 rotate in opposite directions. When the threaded cylinder 7111 on the lead screw 7110 at the lower end of gear 717 rotates... The gear 718 is raised, causing the threaded cylinder 7111 on the lead screw 7110 at the lower end of gear 2 718 to descend, thus causing the flipping shell 4 to flip, which in turn drives the clamping structure 8 to flip, thereby causing the vehicle body to flip. When the flipping shell 4 begins to flip, it causes the rotating rod 3 to rotate, and the limiting plate 725 to rotate. When the limiting plate 725 contacts the insert rod 723, the insert rod 723, which has an inclined surface at one end, begins to move towards the limiting ring 722, causing the limiting ring 722 to begin to slide inside the connecting cylinder 721, thereby compressing the spring 724. When the limiting plate 725 passes the insert rod 723, the spring 724 rebounds, causing the insert rod 723 to pop out. When the flipping structure 7 is damaged...The rotation of the limiting plate 725 is limited by the insert rod 723, thereby fixing the flipping shell 4 and improving the safety of the vehicle body welding fixture flipping device, thus protecting the personal safety of workers.

[0037] The adjustment mechanism 81 includes four L-shaped rods 811 fixedly connected to the upper end of the flip shell 4. An adjustment plate 812 is fixedly connected to one end of each L-shaped rod 811 that is close to the other. An L-shaped groove 813 is formed on the inner side of the adjustment plate 812. An L-shaped block 814 is slidably connected to the inner side of the L-shaped groove 813. A sliding block 815 is fixedly connected to the lower end of the L-shaped block 814. A second motor 816 is fixedly connected to the upper end of the adjustment plate 812. A first swing plate 817 is fixedly connected to the output end of the second motor 816. A second swing plate 818 is rotatably connected to both ends of the first swing plate 817. One end of the second swing plate 818 is rotatably connected to a sliding block 815. At one end of block 815, a slider 819 is fixedly connected to the lower end of the sliding block 815. The slider 819 is slidably connected to the inner side of the slide groove 5. The fixing mechanism 82 includes a fixing shell 821 fixedly connected to the lower end of the slider 819. A motor 822 is fixedly connected to one end of the inner wall of the fixing shell 821. A bidirectional lead screw 823 is fixedly connected to the output end of the motor 822. A mounting block 824 is rotatably connected to one end of the bidirectional lead screw 823. One end of the mounting block 824 is fixedly connected to the other end of the inner wall of the fixing shell 821. A limit block 825 is fixedly sleeved on the surface of the bidirectional lead screw 823. The limit block 825 is fixedly connected to... On the inner wall of the fixed housing 821, two symmetrically arranged threaded blocks 826 are threadedly connected to the surface of the bidirectional lead screw 823. A limiting groove 828 is formed at the lower end of the fixed housing 821. The lower ends of the threaded blocks 826 are slidably connected to the inner side of the limiting groove 828. A clamping rod 827 is fixedly connected to the lower end of the threaded blocks 826. In use, starting the motor 822 causes the bidirectional lead screw 823 to rotate, causing the threaded blocks 826 to slide relative to each other through the limiting groove 828. This, in turn, causes the clamping rod 827 to slide relative to each other, allowing the vehicle body to be clamped by the clamping rod 827. When different lengths are to be clamped... When the car body is clamped, the second motor 816 is started, which causes the first swing plate 817 to swing. Through the second swing plate 818, the L-shaped block 814 and the L-shaped slide groove 813, the sliding block 815 begins to slide relative to each other, which in turn causes the slider 819 to slide relative to each other through the slide groove 5. This causes the fixed shell 821 to slide relative to each other, so that the clamping rods 827 can form different distances, allowing the clamping rods 827 to clamp car bodies of different lengths. This allows the car body welding fixture flipping device to clamp car bodies of different lengths, thereby improving the practicality of the car body welding fixture flipping device.

[0038] Triangular plates 9 are fixedly connected to the four corners of the lower end of the device housing 2. One end of the triangular plate 9 is fixedly connected to one end of the support leg 1. When in use, the stability of the vehicle body welding fixture flipping device can be further improved by using the triangular plate 9.

[0039] In practical use: Place the support leg 1 and support plate 6 on the ground. Start motor 3 822 through clamping structure 8 to rotate the bidirectional lead screw 823, causing the threaded block 826 to slide relative to the limit slide groove 828, and causing the clamping rod 827 to slide relative to the limit slide groove 828. The clamping rod 827 can then clamp the car body. When clamping car bodies of different lengths, start motor 2 816 to swing the swing plate 1 817. Through the swing plate 2 818, L-shaped block 814 and L-shaped slide groove 813, the sliding block 815 starts to slide relative to the limit slide groove 813, thereby driving the slider 819 to slide relative to the limit slide groove 815. The grooves 5 begin to slide relative to each other, which in turn causes the fixed housing 821 to slide relative to each other, thus creating different distances between the clamping rods 827. This allows the clamping rods 827 to clamp car bodies of different lengths, enabling the car body welding fixture flipping device to clamp car bodies of different lengths. Then, the flipping structure 7 starts the motor 712, causing the synchronous pulley 713 to rotate. This, through the synchronous belt 715, causes the synchronous pulley 714 to rotate, which in turn causes the connecting rod 716 to rotate, which in turn causes the gear 717 to rotate, which in turn causes the gear 718 to rotate, ultimately driving the lead screw 711. The mechanism starts rotating, meshing with gear 717 and gear 718. This causes the lead screw 7110 at the lower end of gear 717 and gear 718 to rotate in opposite directions. When the threaded cylinder 7111 on the lead screw 7110 at the lower end of gear 717 rises, it causes the threaded cylinder 7111 on the lead screw 7110 at the lower end of gear 718 to fall, causing the flipping shell 4 to flip. This, in turn, causes the clamping structure 8 to flip, which in turn causes the vehicle body to flip. When the flipping shell 4 starts flipping, it causes the rotating rod 3 to rotate, and the limiting plate 725 to rotate. When the limiting plate 725 contacts... When inserting rod 723, a bevel is provided at one end of rod 723, causing rod 723 to move toward the limiting ring 722. This causes the limiting ring 722 to slide inside the connecting cylinder 721, compressing spring 724. When limiting plate 725 passes rod 723, spring 724 rebounds, causing rod 723 to pop out. When flipping structure 7 is damaged, the rotation of limiting plate 725 will be limited by rod 723, thus fixing flipping shell 4. This improves the safety of the car body welding fixture flipping device, protects the personal safety of workers, and allows for car body welding.

[0040] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. The detailed description of known functions and known components is omitted in the specific embodiments of this disclosure. In order to ensure the compatibility of the device, the operating methods used are consistent with the parameters of commercially available instruments.

[0041] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A vehicle body welding fixture flipping device, comprising a support leg (1), wherein a device housing (2) is fixedly connected to one end of the support leg (1) that is close to each other, a rotating rod (3) is rotatably connected to the inner sides of both ends of the device housing (2), a flipping shell (4) is fixedly connected to one end of the rotating rod (3) that is close to each other, a sliding groove (5) is provided at the upper end of the flipping shell (4), and a support plate (6) is fixedly connected to the lower end of the support leg (1), characterized in that, Also includes: A flipping structure (7) is disposed at the upper end of the device housing (2), and the flipping structure (7) includes a swing mechanism (71) and a limiting mechanism (72); A clamping structure (8) is provided at the upper end of the flip shell (4), and the clamping structure (8) includes an adjustment mechanism (81) and a fixing mechanism (82).

2. The vehicle body welding fixture flipping device according to claim 1, characterized in that, The swing mechanism (71) includes a protective shell (711) fixedly connected to the upper end of the device housing (2). The upper end of the protective shell (711) is fixedly connected to a motor (712). The output end of the motor (712) is fixedly connected to a synchronous pulley (713). A synchronous pulley (714) is provided on one side of the synchronous pulley (713). A synchronous belt (715) meshes with one side of the surfaces of the synchronous pulley (713) and the synchronous pulley (714). The synchronous pulley (713) and the synchronous pulley (714) are both rotatably connected to the upper end of the device housing (2).

3. The vehicle body welding fixture flipping device according to claim 2, characterized in that, The lower ends of the first synchronous pulley (713) and the second synchronous pulley (714) are fixedly connected to a connecting rod (716). The lower end of the connecting rod (716) is fixedly connected to a gear (717). One end of the gear (717) is meshed with a gear (718). The lower end of the gear (718) and the gear (717) is rotatably connected to a fixing plate (719). The fixing plate (719) is fixedly connected to the upper side of the inner wall of the device housing (2). A lead screw (7110) is fixedly connected to the lower end of the second wheel (718) and the first gear (717). A threaded cylinder (7111) is threadedly connected to the surface of the lead screw (7110). Two symmetrically arranged hinge blocks (7112) are fixedly connected to the lower end of the threaded cylinder (7111). A hinge block (7113) is hinged to one end of the hinge blocks (7112) that is close to each other. The hinge block (7113) is fixedly connected to the upper end of the flip shell (4).

4. The vehicle body welding fixture flipping device according to claim 3, characterized in that, The limiting mechanism (72) includes a connecting cylinder (721) fixedly connected to both ends of the device housing (2). A limiting ring (722) is slidably connected to the inner side of the connecting cylinder (721). A plug rod (723) is fixedly connected through the inner side of the limiting ring (722). The plug rod (723) is movably connected through the inner side of the device housing (2). A limiting plate (725) is fixedly sleeved on the surface of the rotating rod (3).

5. A vehicle body welding fixture flipping device according to claim 4, characterized in that, A spring (724) is provided between the limiting ring (722) and the connecting cylinder (721).

6. The vehicle body welding fixture flipping device according to claim 1, characterized in that, The adjusting mechanism (81) includes four L-shaped rods (811) fixedly connected to the upper end of the flip shell (4). An adjusting plate (812) is fixedly connected to one end of each L-shaped rod (811) that is close to the other. An L-shaped groove (813) is provided on the inner side of the adjusting plate (812). An L-shaped block (814) is slidably connected to the inner side of the L-shaped groove (813). A sliding block (815) is fixedly connected to the lower end of the L-shaped block (814). The adjusting plate (811)... 12) is fixedly connected to the upper end of the motor two (816), the output end of the motor two (816) is fixedly connected to the swing plate one (817), the two ends of the swing plate one (817) are rotatably connected to the swing plate two (818), one end of the swing plate two (818) is rotatably connected to one end of the sliding block (815), the lower end of the sliding block (815) is fixedly connected to the slider (819), and the slider (819) is slidably connected to the inner side of the groove (5).

7. A vehicle body welding fixture flipping device according to claim 6, characterized in that, The fixing mechanism (82) includes a fixing shell (821) fixedly connected to the lower end of the slider (819). A motor (822) is fixedly connected to one end of the inner wall of the fixing shell (821). A bidirectional lead screw (823) is fixedly connected to the output end of the motor (822). A mounting block (824) is rotatably connected to one end of the bidirectional lead screw (823). One end of the mounting block (824) is fixedly connected to the other end of the inner wall of the fixing shell (821). 3) A limiting block (825) is fixedly sleeved on the surface. The limiting block (825) is fixedly connected to the inner wall of the fixed shell (821). The surface of the bidirectional lead screw (823) is threaded with two symmetrically arranged threaded blocks (826). A limiting groove (828) is opened at the lower end of the fixed shell (821). The lower end of the threaded block (826) is slidably connected to the inner side of the limiting groove (828). A clamping rod (827) is fixedly connected to the lower end of the threaded block (826).

8. A vehicle body welding fixture flipping device according to claim 6, characterized in that, Triangular plates (9) are fixedly connected to the four corners of the lower end of the outer shell (2) of the device, and one end of the triangular plate (9) is fixedly connected to one end of the support leg (1).

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