A welding positioning device for automobile battery box

Abstract

The present invention belongs to the technical field of case welding positioning technology, and specifically discloses a welding positioning device for an automotive battery case, comprising a rotary lifting mechanism, a vacuum diversion control mechanism, a fixed support mechanism, and a base plate. The rotary lifting mechanism comprises a swing assembly and a pneumatic drive assembly, wherein the swing assembly is disposed on the base plate, and the pneumatic drive assembly is disposed on the swing assembly. The present invention determines whether the loading has reached the correct position by determining whether the two workpieces are in contact, and automatically completes the adsorption and rotation of the workpieces in sequence after the loading is in place, and can also lock the position of the workpiece after it is rotated into place. Without the need for complex electronic control systems and sensors, the switching and serialization control of the above-mentioned complex processes can be achieved through a simple, low-cost structure, greatly reducing equipment costs and usage costs.

Description

Technical Field

[0001] The invention belongs to the technical field of box welding positioning, and in particular relates to a welding positioning device for an automobile battery box. Background Art

[0002] The box of a car battery is often welded from metal plates, and mainly includes a bottom plate, side plates and a top plate (some have no top plate and use the car's floor directly as the top plate). During automated welding, the bottom plate of the box is generally fixed, and then the side plates and top plates are welded in sequence; the welding positioning of the side plates is relatively complicated, generally including processes such as displacement, rotation, and locking of the plates. The above processes are currently mostly completed by robots. Due to the relatively heavy weight and long length of metal plates, large-sized medium-sized and large-sized robots must be used. Medium-sized and large-sized robots, together with the control system, are expensive, which invisibly increases the manufacturing cost of the production unit.

[0003] Generally speaking, the lowest-cost automated equipment is in the form of an assembly line (which is generally more efficient). The above functions can also be achieved through a stable frame and a simpler transmission mechanism. However, the design of the transmission mechanism is the main factor that determines the lower limit of cost and production effect. The more production lines there are, the more obvious the gap in cost and efficiency. Summary of the Invention

[0004] In view of the above situation, in order to simplify the transmission and control system and further reduce the equipment cost, the present invention proposes a welding positioning device for automobile battery box bodies; by judging whether the two workpieces are in contact, whether the loading has reached the correct position is judged, and after the loading is in place, the adsorption and rotation of the workpieces are automatically completed in sequence, and the position of the workpiece can be locked after it is rotated into place; without the need for complex electronic control systems and sensors, the switching and serialization control of the above-mentioned complex processes can be realized through a simple low-cost structure, which greatly reduces the equipment cost and usage cost.

[0005] Compared with assembly line equipment, the advantage of the robot arm is that it has a higher degree of freedom. However, for this solution, as long as the box is still a flat cube, even if the length, width, height and other data change, it will not affect the implementation effect of this solution; and the size parameters of the car battery box will basically not fluctuate too much.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a welding positioning device for an automobile battery box, including a rotating lifting mechanism, a vacuum diversion control mechanism, a fixed support mechanism and a base plate. The rotating lifting mechanism includes a swinging assembly and a pneumatic drive assembly. The swinging assembly is arranged on the base plate, and the pneumatic drive assembly is arranged on the swinging assembly.

[0007] Furthermore, the vacuum diversion control mechanism includes a vacuum air pump, a vacuum valve and a valve assembly, wherein the vacuum air pump is arranged on the bottom plate, the vacuum valve is arranged on the vacuum air pump, and the valve assembly is arranged in the vacuum valve;

[0008] The fixed support mechanism is arranged on the rotary lifting mechanism.

[0009] The flow path of the airflow can be controlled by the vacuum diversion control mechanism. After the vacuum air pump is powered on, the side panels of the box are first adsorbed and fixed by extracting air from the vacuum suction cup. When the adsorption force of the vacuum suction cup reaches a certain level, the valve assembly will be opened and the air wheel drive device will be started to rotate.

[0010] Preferably, the vacuum valve consists of a main flow channel and a secondary flow channel, the vacuum valve and the vacuum air pump are connected, and the valve assembly is arranged in the main flow channel.

[0011] As a further preferred embodiment of the present invention, the valve assembly includes a valve seat, a valve post and a negative pressure spring, wherein the valve seat is fixed in the main flow channel, the valve post is slidably arranged in the main flow channel, and the negative pressure spring is arranged between the valve seat and the valve post;

[0012] As a further preferred embodiment of the present invention, when the valve seat and the valve stem are separated, gas can pass through the main flow channel, and when the valve seat and the valve stem are closed, gas cannot pass through the main flow channel.

[0013] When the negative pressure in the secondary flow channel is sufficient to overcome the elastic force of the negative pressure spring to separate the valve seat and the valve column, the air flow will flow in the main channel and drive the air wheel drive device to rotate. On the one hand, it can maintain the vacuum state in the vacuum suction cup, thereby maintaining the adsorption capacity of the workpiece; on the other hand, by replacing negative pressure springs of different specifications, the adsorption strength of the vacuum suction cup can also be adjusted.

[0014] Furthermore, the swing assembly includes an arc-shaped slide rod, a fixed bracket and an arc-shaped guide bracket, the fixed bracket is fixed to the base plate, the arc-shaped guide bracket is symmetrically arranged at both ends of the fixed bracket, and the arc-shaped slide rod is engaged and slidably arranged in the arc-shaped guide bracket.

[0015] Preferably, the pneumatic drive assembly includes a swinging main shaft, a gear box is provided on the arc-shaped guide bracket, the swinging main shaft is rotated in the gear box, the swinging assembly also includes a swinging gear, the swinging gear is located in the gear box, the swinging gear is fixed to the swinging main shaft, the arc-shaped slide rod is provided with arc-shaped teeth, and the arc-shaped teeth and the swinging gear are engaged for transmission.

[0016] The extension and retraction of the arc-shaped slide rod can be controlled through the meshing transmission between the swing gear and the arc-shaped teeth. The center of the arc-shaped slide rod is located at the edge of the bottom plate and the side plate of the box, so that the two can maintain close contact during the rotation of the workpiece; the sliding range of the arc-shaped slide rod in the arc-shaped guide bracket is limited: when the arc-shaped slide rod is at one end, the side plate of the box is parallel to the bottom plate, and when the arc-shaped slide rod is at the other end, the side plate of the box is perpendicular to the bottom plate.

[0017] As a further preferred embodiment of the present invention, the pneumatic turbine drive assembly further includes a pneumatic turbine drive device, a driving worm and a driven worm gear. The pneumatic turbine drive device is arranged on a fixed bracket. The pneumatic turbine drive device and the main channel are connected by a hose. The pneumatic turbine drive device is provided with an output shaft. The driving worm is fixed to the output shaft. The driven worm gear is fixed to the swing main shaft. The driving worm and the driven worm gear are meshed for transmission.

[0018] When the air flow passes through the air turbine drive device, the air turbine drive device will be driven to rotate, but because this drive is flexible, when the air turbine drive device cannot rotate, the air flow can still pass through, but the resistance will increase.

[0019] The active worm and the driven worm gear have a one-way transmission effect, so only the pneumatic drive device can drive the arc slide to extend and retract, and the arc slide cannot reversely drive the pneumatic drive device through its own extension and retraction. That is to say, when the pneumatic drive device stops driving, the position of the arc slide is locked.

[0020] Furthermore, the fixed support mechanism includes a support roller assembly, which consists of a roller bracket and a support roller. The roller bracket is arranged on the bottom plate and the fixed bracket, and the support roller is rotatably arranged on the roller bracket. The roller bracket and the side plate of the box are in rolling contact.

[0021] Preferably, the fixed support mechanism further includes a suction cup bracket, which is fixed to the middle connecting rod of the arc-shaped sliding rod. Vacuum suction cups are symmetrically provided on the suction cup bracket, and the vacuum suction cups and the secondary flow channel are connected by a hose.

[0022] Wherein, a fixed base is provided on the bottom plate, the bottom plate of the box body is clamped and fixed by the fixed base, and the side plates of the box body are located on the rotating lifting mechanism.

[0023] As a further preferred embodiment of the present invention, the fixed support mechanism also includes metal contacts, one of which is arranged on the middle connecting rod of the arc-shaped sliding rod, and the other of the metal contact is arranged on the fixed base. The two metal contacts are in sliding contact with the bottom plate and side plates of the box respectively. When the bottom plate and side plates of the box are in contact, the vacuum air pump is powered on and started.

[0024] The two metal contacts are in contact with the two workpieces respectively. When the two workpieces are in contact, the switch is closed. When the material is loaded to the specified position, the vacuum air pump is automatically started. After the vacuum suction cup completes the adsorption and fixation of the workpiece, the arc-shaped slide rod slides to complete the rotation of the workpiece and maintain the workpiece in this state.

[0025] The beneficial effects achieved by the present invention using the above structure are as follows:

[0026] (1) The airflow path can be controlled by the vacuum diversion control mechanism. After the vacuum air pump is powered on, the air in the vacuum suction cup is first extracted to achieve adsorption and fixation of the box side panel. When the adsorption force of the vacuum suction cup reaches a certain level, the valve assembly will be opened and the air wheel drive device will be started to rotate.

[0027] (2) When the negative pressure in the secondary flow channel is sufficient to overcome the elastic force of the negative pressure spring to separate the valve seat and the valve column, the air flow will flow in the main flow channel and drive the air wheel drive device to rotate. On the one hand, it can maintain the vacuum state in the vacuum suction cup, thereby maintaining the adsorption capacity of the workpiece; on the other hand, by replacing the negative pressure springs of different specifications, the adsorption strength of the vacuum suction cup can be adjusted.

[0028] (3) The extension and retraction of the arc-shaped slide can be controlled by the meshing transmission between the swing gear and the arc-shaped teeth. The center of the arc-shaped slide is located at the edge of the bottom plate and the side plate of the box, so that the two can maintain close contact during the rotation of the workpiece; the sliding range of the arc-shaped slide in the arc-shaped guide bracket is limited: when the arc-shaped slide is at one end, the side plate of the box is parallel to the bottom plate, and when the arc-shaped slide is at the other end, the side plate of the box is perpendicular to the bottom plate.

[0029] (4) When the air flow passes through the turbine drive device, the turbine drive device will be driven to rotate. However, since this drive is flexible, when the turbine drive device cannot rotate, the air flow can still pass through, but the resistance will increase.

[0030] (5) The active worm and the driven worm gear have a one-way transmission effect, so only the pneumatic drive device can drive the arc slide to extend and retract, and the arc slide cannot reversely drive the pneumatic drive device through its own extension and retraction. That is to say, when the pneumatic drive device stops driving, the position of the arc slide is locked.

[0031] (6) The two metal contacts are in contact with the two workpieces respectively. When the two workpieces are in contact, the switch is closed. When the material is loaded to the specified position, the vacuum air pump is automatically started. After the vacuum suction cup completes the adsorption and fixation of the workpiece, the arc-shaped slide rod slides to complete the rotation of the workpiece and keep the workpiece in this state. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1This is a three-dimensional diagram of a welding positioning device for an automobile battery box proposed by the present invention;

[0033] Figure 2 This is a front view of a welding and positioning device for an automobile battery box proposed by the present invention;

[0034] Figure 3 This is a left view of a welding and positioning device for an automobile battery box proposed by the present invention;

[0035] Figure 4 for Figure 3 A cross-sectional view along the cutting line AA;

[0036] Figure 5 for Figure 2 A cross-sectional view along the cutting line BB;

[0037] Figure 6 for Figure 5 Isometric section view along the cutting line CC;

[0038] Figure 7 for Figure 3 A cross-sectional view along the cutting line DD;

[0039] Figure 8 for Figure 4 A partial enlarged view of point Ⅰ in the middle;

[0040] Figure 9 for Figure 7 A partial enlarged view of the middle II;

[0041] Figure 10 for Figure 5 A partial enlarged view of point III in the middle;

[0042] Figure 11 It is a schematic diagram of the circuit and gas path of the vacuum diversion control mechanism;

[0043] Figure 12 Schematic diagram of the swing direction of the box side panel.

[0044] Among them, 1. Rotary lifting mechanism, 2. Vacuum diversion control mechanism, 3. Fixed support mechanism, 4. Bottom plate, 5. Swinging assembly, 6. Air turbine drive assembly, 7. Arc slide bar, 8. Fixed bracket, 9. Arc guide bracket, 10. Swinging gear, 11. Air turbine drive device, 12. Swinging main shaft, 13. Active worm gear, 14. Driven worm gear, 15. Arc teeth, 16. Gear box, 17. Output shaft, 18. Vacuum air pump, 19. Vacuum valve, 20. Valve assembly, 21. Main flow channel, 22. Secondary flow channel, 23. Valve seat, 24. Valve column, 25. Negative pressure spring, 26. Support roller assembly, 27. Suction cup bracket, 28. Metal contact sheet, 29. Roller bracket, 30. Support roller, 31. Vacuum suction cup, 32. Fixed base.

[0045] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0048] like Figures 1 to 10 As shown, the present invention proposes a welding positioning device for an automobile battery box, comprising a rotary lifting mechanism 1, a vacuum diversion control mechanism 2, a fixed support mechanism 3 and a base plate 4. The rotary lifting mechanism 1 comprises a swing assembly 5 and a pneumatic drive assembly 6. The swing assembly 5 is arranged on the base plate 4, and the pneumatic drive assembly 6 is arranged on the swing assembly 5.

[0049] The vacuum diversion control mechanism 2 includes a vacuum air pump 18, a vacuum valve 19 and a valve assembly 20. The vacuum air pump 18 is arranged on the bottom plate 4, the vacuum valve 19 is arranged on the vacuum air pump 18, and the valve assembly 20 is arranged in the vacuum valve 19;

[0050] The fixed support mechanism 3 is arranged on the rotary lifting mechanism 1 .

[0051] The flow path of the airflow can be controlled by the vacuum diversion control mechanism 2. After the vacuum air pump 18 is powered on, the side panel of the box is first adsorbed and fixed by extracting the air in the vacuum suction cup 31. When the adsorption force of the vacuum suction cup 31 reaches a certain level, the valve assembly 20 will be opened and the air wheel drive device 11 will be started to rotate.

[0052] The vacuum valve 19 is composed of a main flow channel 21 and a secondary flow channel 22 . The vacuum valve 19 and the vacuum air pump 18 are connected, and the valve assembly 20 is arranged in the main flow channel 21 .

[0053] The valve assembly 20 includes a valve seat 23, a valve stem 24, and a negative pressure spring 25. The valve seat 23 is fixed to the main flow channel 21, the valve stem 24 is slidably disposed in the main flow channel 21, and the negative pressure spring 25 is disposed between the valve seat 23 and the valve stem 24.

[0054] When the valve seat 23 and the valve stem 24 are separated, gas can pass through the main flow channel 21 . When the valve seat 23 and the valve stem 24 are closed, gas cannot pass through the main flow channel 21 .

[0055] When the negative pressure in the secondary flow channel 22 is sufficient to overcome the elastic force of the negative pressure spring 25 to separate the valve seat 23 and the valve column 24, the air flow will flow in the main channel 21 and drive the air wheel drive device 11 to rotate. On the one hand, it can maintain the vacuum state in the vacuum suction cup 31, thereby maintaining the adsorption capacity of the workpiece; on the other hand, by replacing the negative pressure springs 25 of different specifications, the adsorption strength of the vacuum suction cup 31 can also be adjusted.

[0056] The swing assembly 5 includes an arc-shaped slide rod 7, a fixed bracket 8 and an arc-shaped guide bracket 9. The fixed bracket 8 is fixed to the base plate 4. The arc-shaped guide bracket 9 is symmetrically arranged at both ends of the fixed bracket 8. The arc-shaped slide rod 7 is engaged and slidably arranged in the arc-shaped guide bracket 9.

[0057] The pneumatic drive assembly 6 includes a swinging main shaft 12, a gear box 16 is provided on the arc-shaped guide bracket 9, and the swinging main shaft 12 rotates in the gear box 16. The swinging assembly 5 also includes a swinging gear 10, which is located in the gear box 16. The swinging gear 10 is fixed to the swinging main shaft 12, and the arc-shaped slide rod 7 is provided with arc-shaped teeth 15, which mesh with the swinging gear 10 for transmission.

[0058] The extension and retraction of the arc-shaped slide rod 7 can be controlled by the meshing transmission between the swing gear 10 and the arc-shaped teeth 15. The center of the arc-shaped slide rod 7 is located at the edge of the bottom plate 4 and the side plate of the box body, so that the two can maintain close contact during the rotation of the workpiece; the sliding range of the arc-shaped slide rod 7 in the arc-shaped guide bracket 9 is limited: when the arc-shaped slide rod 7 is located at one end, the side plate of the box body is parallel to the bottom plate 4, and when the arc-shaped slide rod 7 is located at the other end, the side plate of the box body is perpendicular to the bottom plate 4.

[0059] The pneumatic turbine drive assembly 6 also includes a pneumatic turbine drive device 11, a driving worm 13 and a driven worm wheel 14. The pneumatic turbine drive device 11 is arranged on the fixed bracket 8. The pneumatic turbine drive device 11 and the main channel 21 are connected by a hose. The pneumatic turbine drive device 11 is provided with an output shaft 17. The driving worm 13 is fixed to the output shaft 17. The driven worm wheel 14 is fixed to the swing main shaft 12. The driving worm 13 and the driven worm wheel 14 are engaged with each other for transmission.

[0060] When the air flow passes through the air turbine drive device 11, the air turbine drive device 11 will be driven to rotate. However, since this drive is flexible, when the air turbine drive device 11 cannot rotate, the air flow can still pass through, but the resistance will increase.

[0061] The active worm gear 13 and the driven worm gear 14 have a one-way transmission effect, so only the pneumatic drive device 11 can drive the arc-shaped slide rod 7 to extend and retract, and the arc-shaped slide rod 7 cannot reversely drive the pneumatic drive device 11 through its own extension and retraction. That is to say, when the pneumatic drive device 11 stops driving, the position of the arc-shaped slide rod 7 is locked.

[0062] The fixed support mechanism 3 includes a support roller assembly 26, which consists of a roller bracket 29 and a support roller 30. The roller bracket 29 is arranged on the bottom plate 4 and the fixed bracket 8. The support roller 30 is rotatably arranged on the roller bracket 29, and the roller bracket 29 is in rolling contact with the side plate of the box.

[0063] The fixed support mechanism 3 also includes a suction cup bracket 27, which is fixed to the middle connecting rod of the arc-shaped sliding rod 7. A vacuum suction cup 31 is symmetrically provided on the suction cup bracket 27, and the vacuum suction cup 31 is connected to the secondary flow channel 22 through a hose.

[0064] A fixed base 32 is provided on the bottom plate 4 , and the bottom plate of the box body is clamped and fixed by the fixed base 32 , and the side plates of the box body are located on the rotary lifting mechanism 1 .

[0065] The fixed support mechanism 3 also includes metal contacts 28, one of which is arranged on the middle connecting rod of the arc-shaped sliding rod 7, and the other metal contact 28 is arranged on the fixed base 32. The two metal contacts 28 are in sliding contact with the bottom plate and side plates of the box respectively. When the bottom plate and side plates of the box are in contact, the vacuum air pump 18 is powered on and started.

[0066] The two metal contacts 28 are in contact with the two workpieces respectively, and the switch is closed when the two workpieces are in contact. When the material is loaded to the specified position, the vacuum air pump 18 is automatically started, and after the vacuum suction cup 31 completes the adsorption and fixation of the workpiece, the arc-shaped slide rod 7 is used to complete the rotation of the workpiece and keep the workpiece in this state.

[0067] like Figure 11As shown, the upper half shows the starting circuit of the vacuum air pump 18. The two metal contacts 28 are in contact with the two workpieces respectively. When the bottom plate and the side plate of the box body are in contact, the circuit is connected, and the vacuum air pump 18 is powered on and started.

[0068] The lower part shows the air path control of the vacuum diversion control mechanism 2. When the vacuum air pump 18 is just started, the valve assembly 20 is closed. When the vacuum degree in the vacuum suction cup 31 reaches a certain level, the valve assembly 20 opens, and the air wheel drive device 11 rotates under the impetus of the airflow.

[0069] like Figure 12 As shown, the arc arrow indicates the rotation direction of the side panel of the box, and the dotted box indicates the end position of the side panel of the box; point A indicates the center position of the arc slide bar 7 and the arc guide bracket 9, which is located at the edge of the bottom plate 4 of the box. When the side panel of the box rotates with this position as the center, it can keep in contact with the bottom plate 4, thereby maintaining the open state of the vacuum air pump 18.

[0070] During specific use, the user first needs to install the bottom plate of the box on the fixed base 32, and then use the external loading device to push the side plates of the box horizontally toward the bottom plate 4. During the pushing process, the side plates roll on the support rollers 30, and the support rollers 30 have a supporting effect on the side plates.

[0071] Since the two metal contacts 28 are in contact with the bottom plate and the side plate of the box respectively, when the side plate and the bottom plate 4 are in contact, the circuit is connected to supply power to the vacuum air pump 18, and the vacuum air pump 18 can extract the air in the vacuum valve 19 when it is started;

[0072] At the beginning, since the valve assembly 20 is in a closed state, the air at the vacuum suction cup 31 is first extracted through the secondary flow channel 22, so that the vacuum suction cup 31 is attached to the bottom surface of the side panel and the air pressure inside itself is gradually reduced, thereby achieving adsorption and fixation of the side panel of the box.

[0073] As the internal air pressure of the secondary flow channel 22 decreases, when the internal and external pressure difference is sufficient to overcome the elastic force of the negative pressure spring 25, the valve seat 23 and the valve stem 24 separate, and the valve assembly 20 opens;

[0074] At this time, on the one hand, the vacuum suction cup 31 maintains its own negative pressure state, and on the other hand, the air flow passes through the air wheel driving device 11 and drives the output shaft 17 to rotate. The air wheel driving device 11 has an impeller inside. When the output shaft 17 rotates, it can drive the driven worm gear 14 to rotate through the active worm gear 13, and drive the swing gear 10 to rotate through the swing main shaft 12; thereby driving the arc-shaped slide bar 7 to slide;

[0075] When the arc-shaped slide bar 7 slides to the extreme position at the other end, it can change the side panel from a horizontal state to a vertical state. At this time, the output shaft 17 cannot continue to rotate, but because the air flow drives the air turbine drive device 11 flexibly, no jamming, overheating or other failures will occur. Instead, the air turbine drive device 11 and the arc-shaped slide bar 7 will be kept in the current position.

[0076] Since the power transmission between the active worm 13 and the driven worm wheel 14 is unidirectional, during the following welding process, the side plate and the arc-shaped slide bar 7 are subjected to force but will not push the turbine drive device 11 to rotate.

[0077] By repeating the above steps, multiple side panels can be welded and positioned.

[0078] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0079] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A welding positioning device for an automobile battery box, characterized in that: The invention comprises a rotary lifting mechanism (1), a vacuum flow diversion control mechanism (2), a fixed support mechanism (3) and a base plate (4); the rotary lifting mechanism (1) comprises a swinging assembly (5) and an air wheel drive assembly (6); the swinging assembly (5) is arranged on the base plate (4); and the air wheel drive assembly (6) is arranged on the swinging assembly (5); The vacuum flow diversion control mechanism (2) comprises a vacuum air pump (18), a vacuum valve (19) and a valve assembly (20), wherein the vacuum air pump (18) is arranged on the bottom plate (4), the vacuum valve (19) is arranged on the vacuum air pump (18), and the valve assembly (20) is arranged in the vacuum valve (19); The fixed support mechanism (3) is provided on the rotary lifting mechanism (1); The vacuum valve (19) is composed of a main flow channel (21) and a secondary flow channel (22), the vacuum valve (19) and the vacuum air pump (18) are connected, and the valve assembly (20) is arranged in the main flow channel (21); The valve assembly (20) comprises a valve seat (23), a valve column (24) and a negative pressure spring (25), wherein the valve seat (23) is fixedly connected to the main flow channel (21), the valve column (24) is slidably arranged in the main flow channel (21), and the negative pressure spring (25) is arranged between the valve seat (23) and the valve column (24); When the valve seat (23) and the valve stem (24) are separated, gas can pass through the main channel (21); when the valve seat (23) and the valve stem (24) are closed, gas cannot pass through the main channel (21); The swing assembly (5) includes an arc-shaped slide bar (7), a fixed bracket (8) and an arc-shaped guide bracket (9), wherein the fixed bracket (8) is fixedly connected to the bottom plate (4), the arc-shaped guide bracket (9) is symmetrically arranged at both ends of the fixed bracket (8), and the arc-shaped slide bar (7) is engaged and slidably arranged in the arc-shaped guide bracket (9); The pneumatic wheel drive assembly (6) includes a swing main shaft (12), a gear box (16) is provided on the arc-shaped guide bracket (9), and the swing main shaft (12) is rotatably arranged in the gear box (16). The swing assembly (5) also includes a swing gear (10), and the swing gear (10) is located in the gear box (16). The swing gear (10) is fixed to the swing main shaft (12), and the arc-shaped slide bar (7) is provided with an arc-shaped tooth (15), and the arc-shaped tooth (15) and the swing gear (10) are meshed and transmitted; The pneumatic wheel drive assembly (6) further comprises a pneumatic wheel drive device (11), a driving worm (13) and a driven worm wheel (14), wherein the pneumatic wheel drive device (11) is arranged on a fixed bracket (8), the pneumatic wheel drive device (11) and the main channel (21) are connected via a hose, an output shaft (17) is provided on the pneumatic wheel drive device (11), the driving worm (13) is fixedly connected to the output shaft (17), the driven worm wheel (14) is fixedly connected to the swing main shaft (12), and the driving worm (13) and the driven worm wheel (14) are meshed and driven; The fixed support mechanism (3) includes a support roller assembly (26), the support roller assembly (26) consisting of a roller bracket (29) and a support roller (30), the roller bracket (29) being arranged on the bottom plate (4) and the fixed bracket (8), the support roller (30) being rotatably arranged on the roller bracket (29), and the roller bracket (29) being in rolling contact with the side plate of the box body; The fixed support mechanism (3) further comprises a suction cup bracket (27), wherein the suction cup bracket (27) is fixedly connected to the middle connecting rod of the arc-shaped slide rod (7), and a vacuum suction cup (31) is symmetrically provided on the suction cup bracket (27), and the vacuum suction cup (31) and the secondary flow channel (22) are connected via a hose; A fixed base (32) is provided on the bottom plate (4), the bottom plate of the box body is clamped and fixed by the fixed base (32), and the side plates of the box body are located on the rotary lifting mechanism (1).

2. The automobile battery box welding positioning device according to claim 1, characterized in that: The fixed support mechanism (3) further includes metal contacts (28), one of which is provided on the middle connecting rod of the arc-shaped slide rod (7), and the other of which is provided on the fixed base (32). The two metal contacts (28) are in sliding contact with the bottom plate and the side plate of the box body, respectively. When the bottom plate and the side plate of the box body are in contact, the vacuum air pump (18) is powered on and started.

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