A new energy vehicle chassis assembly line welding device

Abstract

The present invention relates to the technical field of automobile chassis welding, and discloses a new energy automobile chassis assembly line welding device, comprising an annular mounting base, wherein a welding robot is arranged inside the annular mounting base, a main control cabinet is arranged outside the annular mounting base, and the main control cabinet is connected to the welding robot by control, and a plurality of clamping mechanisms are arranged on the top of the annular mounting base, and the automobile chassis is clamped in the clamping mechanisms. The new energy automobile chassis assembly line welding device vertically clamps the automobile chassis by setting a lower clamping assembly and an upper clamping assembly that cooperate with each other, so that the welding positions on both sides of the automobile chassis can be fully exposed, and the automobile chassis can be driven to adjust by the rotatable and deflectable lower clamping assembly and upper clamping assembly, and the relative position between the automobile chassis and the welding robot is adjusted to avoid the welding dead angle of the welding robot, so that the automobile chassis can be welded on both sides by clamping once, thereby improving the welding efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of automobile chassis welding, in particular to an assembly line welding device for a new energy automobile chassis. Background Art

[0002] With the increasing awareness of environmental protection and the continuous depletion of energy, new energy vehicles have gradually become the mainstream trend of the automotive industry. As one of the key links in the manufacturing of new energy vehicles, chassis welding is particularly important. The new energy vehicle chassis welding system is a system that uses heating, high temperature or high pressure to join metals or other thermoplastic materials as a processing technology.

[0003] Today's automobile assembly process is becoming more and more advanced, and basically uses automated workshops. The welding of new energy vehicle chassis is mostly performed by welding robots. A chassis tooling is set on the conveyor line, the automobile chassis is clamped on the tooling, and the automobile chassis is conveyed through the conveyor line. During the conveying process, the chassis is welded by a welding robot. Most traditional chassis tooling is to set some positioning components that are compatible with the chassis to achieve the positioning of the automobile chassis. However, for some automobile chassis that need to be welded on both sides, due to the limitation of the degree of freedom of the welding robot joints, it is impossible to weld to some welding dead corners. Then the automobile chassis needs to be flipped and fixed for a second time, which affects the continuity of the welding operation and reduces the welding efficiency. After the automobile chassis is flipped and fixed for the second time, another group of welding robots needs to be set up for welding operations, which leads to an increase in costs. For this reason, we propose a new energy vehicle chassis assembly line welding device to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a new energy vehicle chassis assembly line welding device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a new energy automobile chassis assembly line welding device, comprising an annular mounting base, a welding robot is arranged inside the annular mounting base, a main control cabinet is arranged outside the annular mounting base, and the main control cabinet is connected to the welding robot by control, and a plurality of clamping mechanisms are arranged on the top of the annular mounting base, and the automobile chassis is clamped in the clamping mechanisms;

[0006] The clamping mechanism comprises: a moving assembly, the moving assembly is arranged on the top of the annular mounting base, and the moving assembly comprises a servo motor 1 and a driving gear 1, and the moving assembly can slide on the top of the annular mounting base under the drive of the servo motor 1 and the driving gear 1;

[0007] An electric indexing plate, which is fixedly mounted on the top of the moving assembly;

[0008] A lower clamping assembly and an upper clamping assembly, wherein the lower clamping assembly is fixedly mounted on the top of the electric indexing plate, a connecting arm is provided between the lower clamping assembly and the upper clamping assembly, and the lower clamping assembly and the upper clamping assembly are rigidly connected through the connecting arm;

[0009] The lower clamping assembly includes a mounting plate, an arc-shaped receiving seat and an arc-shaped clamping seat. The top of the mounting plate is provided with an arc-shaped receiving seat and an arc-shaped clamping seat, and the arc-shaped clamping seat can slide on the top of the arc-shaped receiving seat. A servo motor 2 is fixedly installed at one end of the arc-shaped clamping seat, and two assembly jaws are provided on the top. The servo motor 2 is transmission-connected to the clamping jaws.

[0010] Preferably, the mobile component includes a mobile base, the bottom of the mobile base is provided with two groups of positioning pulleys, the outside is provided with a conductive sliding rod, and the inside is fixedly provided with a secondary controller, the secondary controller is electrically connected to the main control cabinet and the conductive sliding rod, the secondary controller is control-connected to a servo motor, a wireless transceiver module is provided in the secondary controller, and the secondary controller is electrically connected to the main control cabinet through the wireless transceiver module, thereby ensuring that the main control cabinet can control the electrical components in the clamping mechanism.

[0011] Preferably, two groups of annular slide rails cooperating with positioning pulleys are provided on the top of the annular mounting base, and the movable base is slidably installed on the top of the annular mounting base through the positioning pulleys. An auxiliary driving gear ring is provided on the top of the annular mounting base between the two groups of annular slide rails, and the auxiliary driving gear ring is meshed with the driving gear. The driving gear is driven to rotate by a servo motor and cooperate with the auxiliary driving gear ring, so that the clamping mechanism as a whole and the automobile chassis can be driven to move on the top of the annular mounting base, thereby realizing continuous conveying and welding of the automobile chassis by the clamping mechanism.

[0012] Preferably, the mounting plate in the lower clamping assembly is fixedly mounted on the top of the electric indexing plate, and the mounting plate is located on the central axis of the electric indexing plate. The electric indexing plate is electrically connected to the secondary controller, and the lower clamping assembly and the vehicle chassis are driven to rotate by the electric indexing plate, the vehicle chassis is rotationally adjusted, and the relative position of the vehicle chassis and the welding robot is adjusted to avoid welding dead angles in the vehicle chassis.

[0013] Preferably, an arc-shaped sliding rail is provided at the top of the arc-shaped receiving seat, and an arc-shaped sliding sleeve is provided at the bottom of the arc-shaped clamping seat. The arc-shaped clamping seat is slidably installed on the top of the arc-shaped receiving seat through the arc-shaped sliding sleeve and the arc-shaped sliding rail. The position of the arc-shaped clamping seat can be limited by cooperating with the arc-shaped sliding sleeve and the arc-shaped sliding rail, thereby ensuring that the arc-shaped clamping seat is firmly connected to the top of the arc-shaped receiving seat and enabling the arc-shaped clamping seat to achieve stable sliding.

[0014] Preferably, a servo motor three is fixedly installed in the middle position of the top end of the arc-shaped receiving seat, and a driving gear three is fixedly mounted on the output shaft of the servo motor three, an arc-shaped rack is provided at the bottom of the arc-shaped clamping seat, and the arc-shaped rack and the driving gear three are meshed with each other, and the servo motor three is electrically connected to the secondary controller, and the driving gear three is driven to rotate by the servo motor three and cooperates with the arc-shaped rack to drive the arc-shaped clamping seat to deflect, thereby realizing the deflection adjustment of the automobile chassis.

[0015] Preferably, a clearance groove is provided on the top of the arc-shaped clamping seat, and a bidirectional transmission screw is movably installed in the clearance groove, one end of the bidirectional transmission screw is fixedly connected to the output shaft of servo motor 2, and servo motor 2 is electrically connected to the main control cabinet. The bidirectional transmission screw is driven to rotate by servo motor 2, which can drive the two assembly jaws to rotate, thereby realizing synchronous adjustment of the two assembly jaws and clamping of the automobile chassis.

[0016] Preferably, the two groups of clamping jaws are both provided with transmission arms that cooperate with the bidirectional transmission screw, and the transmission arms are clamped in the air avoidance groove and threadedly connected with the bidirectional transmission screw. The clamping jaws are provided with clamping cavities that cooperate with the end of the automobile chassis, ensuring that the clamping jaws can precisely cooperate with the end of the automobile chassis to achieve stable clamping of the automobile chassis.

[0017] Preferably, the inner ring of the annular mounting base is provided with a sliding conductive groove, the conductive sliding rod is against the sliding conductive groove, and the conductive sliding rod is electrically connected to the main control cabinet through the sliding conductive groove. The conductive sliding rod and the sliding conductive groove are in a sliding connection, which can provide power for the clamping mechanism.

[0018] Preferably, the difference between the lower clamping assembly and the upper clamping assembly is that the servo motor three, the drive gear three and the arc-shaped rack are not provided in the upper clamping assembly. Except for the servo motor three, the drive gear three and the arc-shaped rack, the other structures of the lower clamping assembly and the upper clamping assembly are the same. The connecting arm is fixedly connected to the mounting plates in the lower clamping assembly and the upper clamping assembly, and the transmission is transmitted through the connecting arm to ensure that the electric dividing plate can drive the lower clamping assembly and the upper clamping assembly to rotate, thereby realizing stable adjustment of the vehicle chassis.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The new energy vehicle chassis assembly line welding device can vertically clamp the vehicle chassis by setting up the lower clamping assembly and the upper clamping assembly that cooperate with each other, so that the welding positions on both sides of the vehicle chassis can be fully exposed, and the vehicle chassis can be adjusted by the rotatable and deflectable lower clamping assembly and the upper clamping assembly, and the relative position between the vehicle chassis and the welding robot can be adjusted to avoid the welding dead angle of the welding robot, so that the vehicle chassis can be welded on both sides by clamping it once, thereby improving the welding efficiency and reducing the welding cost.

[0021] 2. The new energy vehicle chassis assembly line welding device has two sets of synchronously adjustable clamping jaws in the lower clamping assembly and the upper clamping assembly, and the clamping jaws are provided with a clamping cavity that cooperates with the end of the vehicle chassis. The two-way transmission screw and the two sets of clamping jaws are driven by the servo motor to move, so as to achieve stable clamping of the vehicle chassis, ensure the stability of the vehicle chassis during position adjustment and subsequent welding, and thus ensure the welding quality of the vehicle chassis.

[0022] 3. The new energy vehicle chassis assembly line welding device is provided with a plurality of clamping mechanisms on the top of the annular mounting base, and the vehicle chassis can be loaded and unloaded on the clamping mechanisms at both ends of the annular mounting base. The vehicle chassis is driven to move in an annular manner on the annular mounting base by the plurality of clamping mechanisms, so that continuous welding of the vehicle chassis can be realized, further improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure after the overall combination of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of the clamping mechanism in the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the automobile chassis after it is rotated and deflected in the clamping mechanism in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the mobile component in the present invention;

[0027] Figure 5 It is a structural schematic diagram of the lower clamping assembly in the present invention;

[0028] Figure 6 It is a structural schematic diagram of the bottom of the arc-shaped clamping seat in the present invention;

[0029] Figure 7 It is a structural schematic diagram of the top of the arc-shaped receiving seat in the present invention;

[0030] Figure 8 It is a schematic diagram of the structure of the clamping claw in the present invention;

[0031] Fig. 9 It is a structural schematic diagram of the upper clamping assembly in the present invention;

[0032] Fig.10 It is a schematic diagram of the structure of the connection between the conductive sliding rod and the sliding conductive groove in the present invention.

[0033] In the figure: 1. Ring-shaped mounting base; 2. Clamping mechanism;

[0034] 21. Mobile assembly; 211. Mobile base; 212. Positioning pulley; 213. Servo motor 1; 214. Driving gear 1; 215. Secondary controller; 216. Conductive slide rod;

[0035] 22. Electric indexing plate;

[0036] 23, lower clamping assembly; 231, mounting plate; 232, arc-shaped receiving seat; 233, arc-shaped clamping seat; 234, servo motor 2; 235, bidirectional transmission screw rod; 236, clamping claw; 237, arc-shaped sliding sleeve; 238, arc-shaped slide rail; 239, arc-shaped rack; 2310, servo motor 3; 2311, driving gear 3;

[0037] 24. Upper clamping assembly; 25. Connecting arm;

[0038] 3. Automobile chassis; 4. Welding robot; 5. Main control cabinet; 6. Annular slide rail; 7. Auxiliary drive gear ring; 8. Sliding conductive groove. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figures 1 to 10 In an embodiment of the present invention, a new energy vehicle chassis assembly line welding device includes an annular mounting base 1, a welding robot 4 is arranged inside the annular mounting base 1, a main control cabinet 5 is arranged outside the annular mounting base 1, and the main control cabinet 5 is controlled and connected with the welding robot 4. The welding robot 4 and the main control cabinet 5 are both prior art and are commercially available. A plurality of clamping mechanisms 2 are arranged on the top of the annular mounting base 1, and a vehicle chassis 3 is clamped in the clamping mechanism 2. The vehicle chassis 3 is vertically clamped by arranging a lower clamping assembly 23 and an upper clamping assembly 24 that cooperate with each other, so that the welding positions on both sides of the vehicle chassis 3 can be fully exposed to avoid the existence of welding dead angles;

[0041] The clamping mechanism 2 includes: a moving component 21, which is arranged on the top of the annular mounting base 1, and the moving component 21 includes a servo motor 213 and a driving gear 214. The moving component 21 can slide on the top of the annular mounting base 1 under the drive of the servo motor 213 and the driving gear 214. A plurality of clamping mechanisms 2 are arranged on the top of the annular mounting base 1, and the automobile chassis 3 can be loaded and unloaded on the clamping mechanisms 2 at both ends of the annular mounting base 1. The automobile chassis 3 is driven to move in an annular manner on the annular mounting base 1 by the plurality of clamping mechanisms 2, so that continuous welding of the automobile chassis 3 can be achieved, thereby improving welding efficiency.

[0042] The electric indexing plate 22 is fixedly mounted on the top of the moving assembly 21. The electric indexing plate 22 drives the lower clamping assembly 23 and the automobile chassis 3 to rotate, and the automobile chassis 3 is rotated and adjusted to adjust the relative position of the automobile chassis 3 and the welding robot 4 to avoid welding dead angles in the automobile chassis 3.

[0043] The lower clamping assembly 23 and the upper clamping assembly 24, the lower clamping assembly 23 is fixedly installed on the top of the electric indexing plate 22, a connecting arm 25 is provided between the lower clamping assembly 23 and the upper clamping assembly 24, and the lower clamping assembly 23 and the upper clamping assembly 24 are rigidly connected through the connecting arm 25, and the automobile chassis 3 is driven to adjust through the rotatable and deflectable lower clamping assembly 23 and the upper clamping assembly 24, and the relative position between the automobile chassis 3 and the welding robot 4 is adjusted to avoid the welding dead angle of the welding robot 4, so that the automobile chassis 3 can be clamped once to achieve welding on both sides, thereby improving the welding efficiency and reducing the welding cost;

[0044] The lower clamping assembly 23 includes a mounting plate 231, an arc-shaped receiving seat 232 and an arc-shaped clamping seat 233. The top of the mounting plate 231 is provided with an arc-shaped receiving seat 232 and an arc-shaped clamping seat 233, and the arc-shaped clamping seat 233 can slide on the top of the arc-shaped receiving seat 232. A servo motor 234 is fixedly installed at one end of the arc-shaped clamping seat 233, and two assembly clamping jaws 236 are arranged on the top. The servo motor 234 is transmission-connected with the clamping jaws 236. Two groups of synchronously adjusted clamping jaws 236 are arranged in the lower clamping assembly 23 and the upper clamping assembly 24, and a clamping cavity that cooperates with the end of the automobile chassis 3 is arranged on the clamping jaws 236. The servo motor 234 drives the bidirectional transmission screw 235 and the two assembly clamping jaws 236 to move, so as to achieve stable clamping of the automobile chassis 3.

[0045] As a further implementation scheme of the above invention: the mobile component 21 includes a mobile base 211, and two groups of positioning pulleys 212 are arranged at the bottom of the mobile base 211, a conductive sliding rod 216 is arranged on the outside, and a secondary controller 215 is fixedly installed on the inside. The secondary controller 215 is electrically connected to the main control cabinet 5 and the conductive sliding rod 216, and the secondary controller 215 is control-connected to the servo motor 213. A wireless transceiver module is arranged in the secondary controller 215, and is electrically connected to the main control cabinet 5 through the wireless transceiver module, so as to ensure that the main control cabinet 5 can control the electrical components in the clamping mechanism 2, so that the clamping mechanism 2 can fully adjust the position of the automobile chassis 3, thereby realizing dead-angle welding of the automobile chassis 3.

[0046] As a further implementation scheme of the above invention: two groups of annular slide rails 6 cooperating with positioning pulleys 212 are arranged on the top of the annular mounting base 1, and the movable base 211 is slidably installed on the top of the annular mounting base 1 through the positioning pulley 212. The positioning pulley 212 cooperates with the annular slide rail 6 to ensure that the movable base 211 is firmly installed on the top of the annular mounting base 1 and can move stably, thereby ensuring the stability of the automobile chassis 3 during movement and welding. An auxiliary driving gear ring 7 located between the two groups of annular slide rails 6 is arranged on the top of the annular mounting base 1, and the auxiliary driving gear ring 7 is meshed with the driving gear 1 214. The driving gear 1 214 is driven to rotate by a servo motor 1 213 and cooperates with the auxiliary driving gear ring 7, which can drive the clamping mechanism 2 as a whole and the automobile chassis 3 to move on the top of the annular mounting base 1, thereby realizing continuous conveying and welding of the automobile chassis 3 by the clamping mechanism 2. The servo motor 1 213 is a prior art and is commercially available.

[0047] As a further implementation scheme of the above invention: the mounting plate 231 in the lower clamping assembly 23 is fixedly mounted on the top of the electric indexing plate 22, and the mounting plate 231 is located on the central axis of the electric indexing plate 22, the electric indexing plate 22 is electrically connected to the secondary controller 215, and the lower clamping assembly 23 and the automobile chassis 3 are driven to rotate by the electric indexing plate 22, the automobile chassis 3 is rotationally adjusted, and the relative position of the automobile chassis 3 and the welding robot 4 is adjusted to avoid welding dead angles in the automobile chassis 3, the electric indexing plate 22 is a prior art and is commercially available.

[0048] As a further implementation scheme of the above invention: an arc-shaped receiving seat 232 is provided with an arc-shaped slide rail 238 at the top, and an arc-shaped clamping seat 233 is provided with an arc-shaped slide sleeve 237 at the bottom. The arc-shaped clamping seat 233 is slidably installed on the top of the arc-shaped receiving seat 232 through the arc-shaped slide sleeve 237 and the arc-shaped slide rail 238. The position of the arc-shaped clamping seat 233 can be limited by the cooperation of the arc-shaped slide sleeve 237 and the arc-shaped slide rail 238, thereby ensuring that the arc-shaped clamping seat 233 is firmly connected to the top of the arc-shaped receiving seat 232, and the arc-shaped clamping seat 233 can achieve stable sliding, thereby further ensuring the stability of the automobile chassis 3 during position adjustment and welding.

[0049] As a further implementation scheme of the above invention: a servo motor 3 2310 is fixedly installed in the middle position of the top of the arc-shaped receiving seat 232, and a driving gear 3 2311 is fixedly mounted on the output shaft of the servo motor 3 2310. The servo motor 3 2310 is a prior art and is commercially available. The diameter of the servo motor 3 2310 is smaller than the thickness of the arc-shaped slide rail 238 to avoid interference of the servo motor 3 2310 with the sliding of the arc-shaped clamping seat 233. An arc-shaped rack 239 is provided at the bottom of the arc-shaped clamping seat 233, and the arc-shaped rack 239 is meshed with the driving gear 3 2311. The servo motor 3 2310 is electrically connected to the secondary controller 215. The driving gear 3 2311 is driven to rotate by the servo motor 3 2310 and cooperates with the arc-shaped rack 239 to drive the arc-shaped clamping seat 233 to deflect, thereby realizing the deflection adjustment of the automobile chassis 3 and adjusting the relative position of the automobile chassis 3 and the welding robot 4 to avoid the existence of welding dead angles.

[0050] As a further implementation scheme of the above invention: an air avoidance groove is opened on the top of the arc-shaped clamping seat 233, and a bidirectional transmission screw rod 235 is movably installed in the air avoidance groove, one end of the bidirectional transmission screw rod 235 is fixedly connected to the output shaft of the servo motor 234, and the bidirectional transmission screw rod 235 is driven to rotate by the servo motor 234, which can drive the two assembling jaws 236 to rotate, thereby realizing synchronous adjustment of the two assembling jaws 236 and clamping of the automobile chassis 3. The servo motor 234 is electrically connected to the main control cabinet 5. The servo motor 234 is a prior art and is purchased commercially.

[0051] As a further implementation scheme of the above invention: the two assembly clamping jaws 236 are both provided with a transmission arm that cooperates with the bidirectional transmission screw 235, and the transmission arm is clamped in the air avoidance groove and is threadedly connected with the bidirectional transmission screw 235. The bidirectional transmission screw 235 and the transmission arm are both arranged in the air avoidance groove, so that the top of the arc-shaped clamping seat 233 is in a flat state, avoiding interference between the bidirectional transmission screw 235 and the transmission arm in clamping the automobile chassis 3, and the clamping jaw 236 is provided with a clamping cavity that cooperates with the end of the automobile chassis 3, ensuring that the clamping jaw 236 can precisely cooperate with the end of the automobile chassis 3, thereby achieving stable clamping of the automobile chassis 3.

[0052] As a further implementation scheme of the above invention: the inner ring of the annular mounting base 1 is provided with a sliding conductive groove 8, the conductive slide rod 216 is against the sliding conductive groove 8, and the conductive slide rod 216 is electrically connected to the main control cabinet 5 through the sliding conductive groove 8, the conductive slide rod 216 and the sliding conductive groove 8 are slidingly connected, and can supply power to the clamping mechanism 2, and the method of sliding power supply between the conductive slide rod 216 and the sliding conductive groove 8 is the prior art.

[0053] As a further implementation scheme of the above invention: the difference between the lower clamping assembly 23 and the upper clamping assembly 24 is that the upper clamping assembly 24 is not provided with a servo motor 3 2310, a drive gear 3 2311 and an arc-shaped rack 239. Except for the servo motor 3 2310, the drive gear 3 2311 and the arc-shaped rack 239, the remaining structures of the lower clamping assembly 23 and the upper clamping assembly 24 are the same. The lower clamping assembly 23 and the upper clamping assembly 24 are restricted at both ends of the automobile chassis 3 to ensure that the automobile To ensure the stability of the clamping of the vehicle chassis 3, the upper clamping assembly 24 is not provided with structures such as the servo motor 3 2310. When the lower clamping assembly 23 drives the vehicle chassis 3 to deflect, the upper clamping assembly 24 can move with the vehicle chassis 3. The connecting arm 25 is fixedly connected to the lower clamping assembly 23 and the mounting plate 231 in the upper clamping assembly 24. The transmission is transmitted through the connecting arm 25 to ensure that the electric dividing plate 22 can drive the lower clamping assembly 23 and the upper clamping assembly 24 to rotate, thereby realizing stable adjustment of the vehicle chassis 3.

[0054] During specific implementation: the main control cabinet 5 is wirelessly connected to the secondary controller 215 in the mobile component 21 and is wiredly connected to the welding robot 4. The secondary controller 215 can control the electric component in the clamping mechanism 2 under the control of the main control cabinet 5. The conductive slide bar 216 is slidably connected to the sliding conductive groove 8 to supply power to the clamping mechanism 2. The automobile chassis 3 on the clamping mechanism 2 is loaded and unloaded at both ends of the annular mounting base 1 by a manipulator in the prior art. The manipulator clamps the automobile chassis 3 between the two assembly clamps 236 in the lower clamping component 23 and the upper clamping component 24 at one end of the annular mounting base 1. The servo motor 234 drives the bidirectional transmission screw 235 to rotate, driving the two assembly clamps 236 moves synchronously inward, so that the clamping cavity on the clamping claw 236 is clamped on the end of the automobile chassis 3, so that the automobile chassis 3 is clamped on the lower clamping component 23 and the upper clamping component 24; then the servo motor 213 drives the driving gear 214 to rotate and cooperate with the auxiliary driving gear ring 7 to drive the clamping mechanism 2 to move as a whole on the top of the annular mounting base 1. When moving, the moving base 211 cooperates with the annular slide rail 6 to limit the moving direction. The side of the welding robot 4 away from the main control cabinet 5 is the welding position. When the clamping mechanism 2 moves to the welding position, it stops moving. The welding robot 4 welds the automobile chassis 3 under the control of the main control cabinet 5; the electric indexing plate 22, the lower clamping assembly The lower clamping assembly 23 and the upper clamping assembly 24 are controlled by the secondary controller 215 and the main control cabinet 5 to adjust the relative position of the automobile chassis 3 and the welding robot 4 to avoid the existence of a welding dead angle. The lower clamping assembly 23 and the upper clamping assembly 24 are fixedly connected by the connecting arm 25. The electric indexing plate 22 drives the lower clamping assembly 23 and the upper clamping assembly 24 to rotate, and the rotation direction of the automobile chassis 3 is adjusted. Then, the servo motor 3 2310 drives the driving gear 3 2311 to rotate and cooperate with the arc rack 239 to drive the arc clamping seat 233 to move on the arc receiving seat 232, thereby driving the automobile chassis 3 to deflect. When the arc clamping seat 233 moves, it moves through the arc sleeve 237 and the arc The arc-shaped slide rail 238 is limited to make the arc-shaped clamping seat 233 and the automobile chassis 3 move stably. The servo motor three 2310, the driving gear three 2311 and the arc-shaped rack 239 are not set in the upper clamping assembly 24. The arc-shaped clamping seat 233 in the upper clamping assembly 24 moves with the automobile chassis 3 to realize the positioning of the top position of the automobile chassis 3, and the rotation and deflection direction of the automobile chassis 3 are adjusted. The relative position of the automobile chassis 3 and the welding robot 4 can be greatly adjusted; after the welding robot 4 welds the automobile chassis 3, the clamping mechanism 2 continues to transport the automobile chassis 3. When it moves to the other end of the annular mounting base 1, the welded automobile chassis 3 in the clamping mechanism 2 is unloaded by the manipulator.

[0055] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A new energy vehicle chassis assembly line welding device, comprising an annular mounting base (1), wherein a welding robot (4) is arranged inside the annular mounting base (1), and a main control cabinet (5) is arranged outside the annular mounting base (1), and the main control cabinet (5) is control-connected to the welding robot (4), characterized in that: A plurality of clamping mechanisms (2) are arranged on the top of the annular mounting base (1), and a vehicle chassis (3) is clamped in the clamping mechanisms (2); The clamping mechanism (2) comprises: a moving component (21), the moving component (21) being arranged on the top of the annular mounting base (1), and the moving component (21) comprising a servo motor (213) and a driving gear (214), and the moving component (21) can slide on the top of the annular mounting base (1) under the drive of the servo motor (213) and the driving gear (214); An electric indexing plate (22), wherein the electric indexing plate (22) is fixedly mounted on the top of the moving component (21); A lower clamping assembly (23) and an upper clamping assembly (24), wherein the lower clamping assembly (23) is fixedly mounted on the top of the electric indexing plate (22), a connecting arm (25) is provided between the lower clamping assembly (23) and the upper clamping assembly (24), and the lower clamping assembly (23) and the upper clamping assembly (24) are rigidly connected via the connecting arm (25); The lower clamping assembly (23) comprises a mounting plate (231), an arc-shaped receiving seat (232) and an arc-shaped clamping seat (233); the top of the mounting plate (231) is provided with an arc-shaped receiving seat (232) and an arc-shaped clamping seat (233); the arc-shaped clamping seat (233) can slide on the top of the arc-shaped receiving seat (232); a servo motor 2 (234) is fixedly mounted on one end of the arc-shaped clamping seat (233); two assembly clamping claws (236) are provided on the top; the servo motor 2 (234) is transmission-connected to the clamping claws (236); A servo motor three (2310) is fixedly installed at the middle position of the top of the arc-shaped receiving seat (232), and a driving gear three (2311) is fixedly mounted on the output shaft of the servo motor three (2310), an arc-shaped rack (239) is arranged at the bottom of the arc-shaped clamping seat (233), and the arc-shaped rack (239) and the driving gear three (2311) are meshed with each other, and the servo motor three (2310) is electrically connected to the secondary controller (215); The difference between the lower clamping assembly (23) and the upper clamping assembly (24) is that the upper clamping assembly (24) is not provided with a servo motor three (2310), a drive gear three (2311) and an arc-shaped rack (239). Except for the servo motor three (2310), the drive gear three (2311) and the arc-shaped rack (239), the remaining structures of the lower clamping assembly (23) and the upper clamping assembly (24) are the same. The connecting arm (25) is fixedly connected to the mounting plate (231) in the lower clamping assembly (23) and the upper clamping assembly (24).

2. A new energy vehicle chassis assembly line welding device according to claim 1, characterized in that: The moving assembly (21) comprises a moving base (211), the bottom of the moving base (211) is provided with two sets of positioning pulleys (212), the outer side is provided with a conductive sliding rod (216), and the inner side is fixedly installed with a secondary controller (215), the secondary controller (215) is electrically connected to the main control cabinet (5) and the conductive sliding rod (216), and the secondary controller (215) is control-connected to a servo motor 1 (213).

3. A new energy vehicle chassis assembly line welding device according to claim 2, characterized in that: The top of the annular mounting base (1) is provided with two groups of annular slide rails (6) cooperating with the positioning pulley (212); the movable base (211) is slidably mounted on the top of the annular mounting base (1) via the positioning pulley (212); the top of the annular mounting base (1) is provided with an auxiliary drive gear ring (7) located between the two groups of annular slide rails (6); and the auxiliary drive gear ring (7) is meshed with a drive gear 1 (214).

4. The new energy vehicle chassis assembly line welding device according to claim 1 is characterized in that: The mounting plate (231) in the lower clamping assembly (23) is fixedly mounted on the top of the electric indexing plate (22), and the mounting plate (231) is located on the central axis of the electric indexing plate (22). The electric indexing plate (22) is electrically connected to the secondary controller (215).

5. The new energy vehicle chassis assembly line welding device according to claim 1 is characterized in that: The top of the arc-shaped receiving seat (232) is provided with an arc-shaped slide rail (238), and the bottom of the arc-shaped clamping seat (233) is provided with an arc-shaped sliding sleeve (237). The arc-shaped clamping seat (233) is slidably mounted on the top of the arc-shaped receiving seat (232) via the arc-shaped sliding sleeve (237) and the arc-shaped slide rail (238).

6. The new energy vehicle chassis assembly line welding device according to claim 1 is characterized in that: The top of the arc-shaped clamping seat (233) is provided with an air avoidance groove, and a bidirectional transmission screw rod (235) is movably installed in the air avoidance groove, one end of the bidirectional transmission screw rod (235) is fixedly connected to the output shaft of the second servo motor (234), and the second servo motor (234) is electrically connected to the main control cabinet (5).

7. The new energy vehicle chassis assembly line welding device according to claim 1 is characterized in that: The two groups of clamping jaws (236) are both provided with a transmission arm that cooperates with the bidirectional transmission screw (235), and the transmission arm is clamped in the air avoidance groove and is threadedly connected to the bidirectional transmission screw (235). The clamping jaws (236) are provided with a clamping cavity that cooperates with the end of the automobile chassis (3).

8. The new energy vehicle chassis assembly line welding device according to claim 2 is characterized in that: The inner ring of the annular mounting base (1) is provided with a sliding conductive groove (8), the conductive sliding rod (216) abuts against the sliding conductive groove (8), and the conductive sliding rod (216) is electrically connected to the main control cabinet (5) through the sliding conductive groove (8).

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