Laser welding turnover device for electric vehicle frame

Abstract

The invention discloses an electric vehicle frame laser welding turnover device which comprises an operation table, mounting plates are arranged in the top end of the operation table, the bottom end of the mounting plate on the left side is fixedly connected with the top end of the operation table, and the bottom end of the mounting plate on the right side is connected with the top end of a sliding sleeve. In the process of clamping and limiting the A, B and C column bodies and the threshold beam body, the radians, recesses and other states of the clamping surfaces of the A, B and C column bodies, the threshold beam body and other components are adaptively adapted, a traditional clamping and limiting mode is abandoned, a balloon is adopted for inflation and matched with a silica gel non-slip mat to abut against the outer side walls of the A, B and C column bodies and the threshold beam body, and extrusion force is generated. And then the limiting mode is carried out in the mode that the extrusion force is further enhanced through the silica gel protruding blocks, rapid limiting can be completed, the clamping force needed by welding is met, then the limitation of a traditional clamp is avoided, and the practicability and convenience of the device are improved.

Description

Technical Field

[0001] The present invention relates to the manufacture of metal cutting and welding equipment such as automatic and semi-automatic arc and plasma arc welding machines, and relates to the technical field of electric vehicle production and processing, and specifically to a laser welding flipping device for an electric vehicle frame. Background Art

[0002] Against the backdrop of global advocacy for energy conservation, emission reduction, and sustainable development, the new energy vehicle industry is booming, becoming a key driver of the automotive industry's transformation and upgrading. With significant environmental advantages, such as reduced greenhouse gas emissions and lower reliance on traditional fossil fuels, new energy vehicles are gradually replacing traditional fuel vehicles and expanding their market share. This rapid growth has placed unprecedented demands on new energy vehicle processing technologies. In the fabrication of electric vehicle frames, welding processes are used to connect the individual frame columns, including resistance welding, laser welding, and arc welding.

[0003] In the existing technology, although the existing modular fixtures support quick replacement, for scenarios with large frame size spans, the fixture positioning reference needs to be frequently adjusted, and the changeover time may exceed ten minutes, which makes it difficult to meet the needs of small-batch and multi-variety production. In addition, some frames use asymmetric pipes and complex curved surfaces, which makes it difficult for traditional fixtures to accurately fit the workpiece surface, resulting in positioning deviation problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an electric vehicle frame laser welding flipping device to solve the scenario proposed in the above background technology where the frame size span is large, the fixture positioning reference needs to be adjusted frequently, and the changeover time may exceed ten minutes, which is difficult to meet the needs of small batch and multi-variety production. In addition, some frames use asymmetric pipes and complex curved surfaces, which makes it difficult for traditional fixtures to accurately fit the workpiece surface, resulting in positioning deviation.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: A laser welding flipping device for an electric vehicle frame, comprising an operating table, a mounting plate provided inside the top of the operating table, the bottom end of the mounting plate on the left side being fixedly connected to the top of the operating table, and the bottom end of the mounting plate on the right side being connected to the top of the sliding sleeve, a rotating cavity being installed at the top of each mounting plate, and a rotating block being rotatably connected inside the rotating cavity, a mounting cavity being installed at one end of each rotating block, and a flipping assembly being installed at the other end of each rotating block, a connecting sleeve being installed in an array at one end of the interior of each mounting cavity, and a return spring being installed at one end of each connecting sleeve, one end of each return spring being connected to one end of an extension sleeve, and the other end of the extension sleeve being connected to one end of an extension column, one end of the extension column passing through the interior of a guide groove, the guide groove being installed at equal intervals at one end of the mounting cavity, one end of the extension column being installed with a resisting silicone block, a first electromagnetic block being installed inside each resisting silicone block, a groove being provided at one end of the extension column close to the resisting silicone block, a balloon being installed inside the groove, and a laser welding head being provided above the operating table.

[0006] Preferably, a movable cavity is opened inside the operating table, and one end of the movable cavity is rotatably connected to a first transmission screw, and the outer wall of the first transmission screw is engaged with a first screw connecting sleeve, the first screw connecting sleeve is installed through the interior of the sliding sleeve, and one end of the first transmission screw is transmission-connected to the output end of the first motor.

[0007] Preferably, the balloon is connected to the inner wall of the groove through an adhesive layer, and the outer wall of the balloon is installed with a silicone anti-slip pad, silicone bumps are installed at equal intervals inside the balloon, and a transmission tube is installed at one end of the balloon, the other end of the transmission tube is connected to the output end of the air pump assembly, and the air pump assembly is installed at the top of the installation cavity, and second electromagnetic blocks are installed at equal intervals inside the installation cavity, and the bottom ends of the second electromagnetic blocks are in contact with the top ends of the corresponding extension columns, and the extension columns are arranged as magnetic material structures.

[0008] Preferably, a vertical plate is installed at the rear end of the operating table, and a movable sleeve is provided on the outer wall of the vertical plate, a second screw connecting sleeve is installed at one end of the movable sleeve, and a second transmission screw is penetrated and engaged with the inside of the second screw connecting sleeve, the second transmission screw is rotatably connected between the two mounting blocks, and a second motor that is transmission-connected to the bottom end of the second transmission screw is installed at the bottom end of the mounting block.

[0009] Preferably, a plug-in cavity is installed at the front end of the movable sleeve, and plug-in blocks are plugged into the front end of the plug-in cavity, and first limiting protrusions are evenly installed on the outer walls of both sides of the plug-in block. The outer wall of the first limiting protrusion conflicts with the outer wall of the second limiting protrusion, and the second limiting protrusion is evenly installed on the outer wall of one end of the flexible sheet, and the flexible sheet is symmetrically installed inside the plug-in cavity.

[0010] Preferably, the bottom end of the plug-in block is connected to the top end of the laser welding head, an image capture device is installed at one end of the laser welding head, the top end of the image capture device is connected to the bottom end of the connecting sleeve, and the connecting sleeve is rotatably connected between two damping bearings, and the damping bearings all pass through the side walls of the connecting frame, and the connecting frame is installed at one end of the plug-in block.

[0011] The transmission gear of claim 1, wherein the first gear is secured to the first notch and the second gear is secured on a flat plate, the second end of which is engaged with the first and second gears and is then engaged with the first and second gears of the transmission gear.

[0012] Preferably, the image capture device is electrically connected to a welding quality analysis system, and the welding quality analysis system includes an interaction module, an image processing module, an image analysis module, and an optimization instruction generation module; The image capture device is interactively connected to the interaction module and the image processing module, the interaction module is electrically connected to the operation terminal, the image processing module is electrically connected to the image analysis module, and the image analysis module is electrically connected to the optimization instruction generation module, and the optimization instruction generation module is electrically connected to the operation terminal.

[0013] Preferably, the interaction module is used to transmit the image data captured by the image capture device to the operation terminal in real time; The image processing module is used to receive the image parameter data captured by the image capture device according to the capture threshold, pre-process the image parameter data, and transmit the pre-processed image parameter data to the image analysis module; The image analysis module is used to receive the image parameter data processed by the image processing module, perform molten pool morphology analysis to obtain molten pool state parameters, weld seam formation detection to obtain weld seam formation parameters, and arc state monitoring to obtain welding process stability parameters, and digitally process the molten pool state parameters, weld seam formation parameters, and welding process stability parameters, and add corresponding floating thresholds to the digitized molten pool state parameters, weld seam formation parameters, and welding process stability parameters to obtain corresponding optimization parameters, and transmit the optimization parameters to the optimization instruction generation module; The function of the optimization instruction generation module is to generate corresponding optimization specifications for the molten pool state optimization parameters, weld formation optimization parameters and welding process stability optimization parameters, and transmit the optimization instructions to the operation terminal for the operator to make decisions.

[0014] Preferably, the image analysis module obtains the pool state optimization parameters, weld formation optimization parameters and welding process stability optimization parameters in the following specific steps: S1: Receive image parameter data processed by the image processing module; S2: The temperature distribution is obtained by combining the two-color radiation temperature measurement principle with the image grayscale value; S3: The cooling rate can be calculated based on the expansion rate of the solidification area of ​​the molten pool in the continuous frame images to obtain the molten pool state parameters; S4: Acquire weld width parameter data, height parameter data, weld toe angle parameter data, and transition radius parameter data from the image parameter data; S5: Obtaining weld forming optimization parameters based on weld width parameter data, weld height parameter data, weld toe angle parameter data, and transition radius parameter data; S6: Acquire the number and movement trajectory of spatter particles in the image parameter data to obtain spatter rate parameter data, and acquire arc length fluctuation parameter data; S7: Obtaining welding process stability optimization parameters based on spatter rate parameter data and arc length fluctuation parameter data; S8: Add corresponding floating thresholds to the pool state optimization parameters, weld formation optimization parameters, and welding process stability optimization parameters.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. During use, the present invention, such as in the process of clamping and limiting the A, B, C pillars and the door sill beam, adopts the method of adaptively adapting to the curvature and concave state of the clamping surfaces of the A, B, C pillars and the door sill beam, abandons the traditional clamping and limiting method, and adopts the method of inflating the balloon, cooperating with the silicone anti-slip pad to contact the outer wall of the A, B, C pillars and the door sill beam, and generate extrusion force, and then the extrusion force is further enhanced by the silicone protrusion to perform the limiting method, which can complete the rapid limiting and meet the clamping force required for welding, thereby avoiding the limitations of the traditional clamp and improving the practicality and convenience of the device. In addition, the balloon clamping structure is different from the traditional spiral clamp. It realizes flexible fitting through air pressure control, avoids deformation or clamping of special-shaped pipes, and has irreplaceable flexible adaptability.

[0016] 2. During the use of the present invention, during the welding process of parts, a welding quality analysis system is used to analyze the welding area, and the molten pool state parameters are obtained by molten pool morphology analysis, the weld formation parameters are obtained by weld formation detection, and the welding process stability parameters are obtained by arc state monitoring, thereby obtaining multi-dimensional data related to welding quality. Based on the data, optimization instructions are generated, thereby effectively improving the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of the operating table in the present invention; Figure 3 Schematic diagram of the cross-sectional structure of the mounting cavity in the present invention; Figure 4 This is a schematic diagram of the structure of the combined parts of the connecting sleeve, the return spring, the extension sleeve rod, the extension column and the abutting silicone block in the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the interfering silicone block in the present invention; Figure 6 This is a schematic diagram of the structure of the combined parts of the balloon, adhesive layer, silicone anti-slip pad and silicone bumps in the present invention; Figure 7 This is a schematic diagram of the structure of the assembled parts of the neutral plate, movable sleeve, plug-in cavity, plug-in block, laser welding head, connecting frame and image capture device of the present invention; Figure 8 Schematic diagram of the welding quality analysis system of the present invention; Figure 9 This is a schematic diagram of the specific steps for the image analysis module in the present invention to obtain the pool state optimization parameters, weld formation optimization parameters and welding process stability optimization parameters.

[0018] In the figure: 1. Operating table; 2. Movable cavity; 3. First transmission screw; 4. First screw connecting sleeve; 5. Sliding sleeve; 6. First motor; 7. Mounting plate; 8. Rotating cavity; 9. Rotating block; 10. Mounting cavity; 11. Connecting sleeve; 12. Return spring; 13. Extension sleeve; 14. Extension column; 15. Guide groove; 16. Interference silicone block; 17. First electromagnetic block; 18. Groove; 19. Balloon; 20. Adhesive layer; 21. Silicone anti-slip pad; 22. Silicone bump; 23. Transmission tube; 24. Air pump assembly; 25. Second electromagnetic block; 26. Vertical plate; 27. Movable sleeve; 28. Second screw connecting sleeve; 29. ​​Second transmission screw; 30. Mounting block; 31. Second motor; 32. Connecting cavity; 33. Connecting block; 34. First limiting protrusion; 35. Second limiting protrusion; 36. Flexible sheet; 37. Laser welding head; 38. Connecting frame; 39. Damping bearing; 40. Connecting sleeve; 41. Image capture device; 42. Transmission sleeve; 43. Mounting sleeve; 44. First bevel gear; 45. Second bevel gear; 46. Mounting frame; 47. Transmission rod; 48. Third bevel gear; 49. Fourth bevel gear; 50. Linkage rod; 51. Third motor. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0020] Example 1: Please refer to Figure 1 and Figure 2 The present invention manufactures metal cutting and welding equipment such as automatic and semi-automatic arc and plasma arc welding machines, and provides an electric vehicle frame laser welding flipping device, including an operating table 1, a movable cavity 2 is opened through the interior of the operating table 1 from front to back, and a fixed plate is fixedly connected to the interior of the movable cavity 2, a first transmission screw 3 is rotatably connected between one side of the fixed plate and one side of the interior of the movable cavity 2, and one end of the first transmission screw 3 is transmission-connected to the output end of the first motor 6 fixedly connected to one side of the fixed plate, the outer side wall of the first transmission screw 3 is meshed with a first screw connecting sleeve 4, and the first screw connecting sleeve 4 is fixedly connected to the bottom end of the sliding sleeve 5, and the sliding sleeve 5 slides left and right inside the movable cavity 2, and the top of the sliding sleeve 5 and the outer wall of the side of the top of the operating table 1 away from the sliding sleeve 5 are fixedly connected with a mounting plate 7.

[0021] During the frame welding process, the size between the left mounting plate 7 and the right mounting plate 7 is adjusted according to the size between the components of the two frames. For example, when welding the A, B, and C columns to the door sill beam, after the A column or the B column or the C column is fixed to the clamping component above the left mounting plate 7, the door sill beam is fixed to the clamping component above the left mounting plate 7 on the right side, and the first transmission screw 3 is driven to rotate by the first motor 6. Since the first transmission screw 3 and the first screw connecting sleeve 4 form a screw transmission structure, the sliding sleeve 5 is driven to move horizontally left and right, and the mounting plate 7 and the clamping component installed on the top of the sliding sleeve 5 are driven to complete synchronous activities, so that the parts to be welded correspond to each other, and the corresponding welding operation is completed.

[0022] See also Figure 1 The top of the mounting plate 7 is vertically fixedly connected to the rotating cavity 8, and the inside of the rotating cavity 8 is rotatably connected to the rotating block 9. The end of the right rotating block 9 away from the mounting cavity 10 is fixedly connected to a transmission sleeve 42 with a rectangular cross-section. One end of the transmission sleeve 42 is movably connected to the inside of one end of the mounting sleeve 43 with a rectangular structure provided on the inner side wall. The other end of the mounting sleeve 43 and one end of the left rotating block 9 are connected to the flip assembly, and the flip assembly includes at least a first bevel gear 44, a second bevel gear 45, a mounting frame 46, a transmission rod 47, a third bevel gear 48 and a fourth bevel gear 49. The other end of the mounting sleeve 43 and one end of the left rotating block 9 are fixedly connected to one end of the first bevel gear 44. The first bevel gear 44 is arranged in a vertical structure, and the outer wall of the first bevel gear 44 The teeth of the second bevel gear 45 arranged in a parallel structure are meshed with each other. The second bevel gear 45 and the first bevel gear 44 are both rotatably connected to the top of the mounting bracket 46. The mounting bracket 46 is symmetrically fixedly connected to both sides of the operating table 1, and the bottom end of the second bevel gear 45 is fixedly connected to the top of the transmission rod 47. The bottom end of the transmission rod 47 is fixedly connected to the top of the third bevel gear 48 arranged in a parallel structure, and the top outer wall of the third bevel gear 48 is meshed with the teeth of the fourth bevel gear 49 arranged in a vertical structure. The third bevel gear 48 and the fourth bevel gear 49 are both rotatably connected to the bottom end of the mounting bracket 46. One end of the fourth bevel gear 49 away from the third bevel gear 48 is transmission-connected to the output end of the third motor 51 fixedly connected to the outer wall of the bottom end of the mounting bracket 46. A linkage rod 50 is fixedly connected between the fourth bevel gears 49 on both sides.

[0023] For example, when welding the A, B, and C columns to the door sill beam, if they need to be flipped, the third motor 51 can be used to output the operation, so that the third motor 51 drives the fourth bevel gear 49 to rotate, and the fourth bevel gear 49 is fixedly connected with a linkage rod 50 so that the linkage rods 50 on both sides rotate synchronously and drive the meshing third bevel gear 48 to rotate. At the same time, the top end of the third bevel gear 48 is linked to the bottom end of the second bevel gear 45 through the transmission rod 47. In this way, when the third bevel gear 48 rotates, the second bevel gear 45 is driven to rotate synchronously, and the second bevel gear 45 further drives the first bevel gear 44 to rotate. The first bevel gear 44 on the left drives the rotating block 9 to rotate inside the rotating cavity 8, and the first bevel gear 44 on the right drives the rotating block 9 on the right side to rotate inside the rotating cavity 8 through the transmission sleeve 42 and the mounting sleeve 43, thereby making the two rotating blocks 9 rotate synchronously to complete the flipping of the workpiece, and when the right rotating cavity 8 and the rotating block 9 and other components are moving, the transmission sleeve 42 moves synchronously at one end inside the mounting sleeve 43. In this way, the flipping of the workpiece can be completed by an output device, reducing the deviation caused by flipping through several output devices, resulting in unstable processing and inaccurate alignment of the welding area.

[0024] See also Figure 1 、 Figure 3-Figure 6 , the corresponding ends of the rotating blocks 9 on both sides are fixedly connected to the mounting cavity 10, and the internal ends of the mounting cavity 10 are fixedly connected to the connecting sleeve 11 in an array, and the internal ends of the connecting sleeve 11 are fixedly connected to the return spring 12, one end of the return spring 12 is fixedly connected to one end of the extension sleeve rod 13 movably connected to the internal end of the connecting sleeve 11, and the other end of the extension sleeve rod 13 is fixedly connected to one end of the extension column 14 provided with a magnetic material structure, the other end of the extension column 14 passes through the interior of the guide groove 15, and the guide groove 15 is fixedly connected in an array to the end of the mounting cavity 10 away from the rotating block 9, and the end of the extension column 14 outside the mounting cavity 10 is fixedly connected to the resistance silicone block 16, and the resistance silicone block 16 is a hollow structure, and the inside of the resistance silicone block 16 is fixedly connected to the first electromagnetic block 17, and the end of the interior of the mounting cavity 10 away from the connecting sleeve 11 is fixedly connected to the second electromagnetic block 25 at equal intervals, and the bottom ends of the second electromagnetic blocks 25 are in contact with the top ends of the corresponding extension columns 14.

[0025] For example, when welding the A, B, C columns and the threshold beam, they will be clamped and limited, and the end of the A, B, C columns and the threshold beam away from the welding will be clamped. One end of the A, B, C columns and the threshold beam will be aligned with the conflicting silicone block 16 and pressed, so that the return spring 12 drives the extension sleeve 13 to retract into the interior of the connecting sleeve 11, so that the outer wall of the A, B, C columns and the threshold beam will conflict with the outer wall of the conflicting silicone block 16, and after limiting, the first electromagnetic block 17 will be energized to magnetically limit the movable extension column 14. This method abandons the traditional cumbersome clamping steps and improves work efficiency.

[0026] See also Figure 1 、 Figure 3-Figure 6 A groove 18 is provided at one end of the extension column 14 close to the abutting silicone block 16, and the inner side walls of the groove 18 are fixedly connected to a balloon 19 through an adhesive layer 20, and the outer side walls of the balloon 19 are fixedly connected to a silicone anti-slip pad 21. The balloon 19 is an inflatable structure, and silicone protrusions 22 are fixedly connected to the inside of the balloon 19 at equal intervals. One end of the balloon 19 is fixedly connected to a transmission tube 23, and the other end of the transmission tube 23 passes through the top of the mounting cavity 10 and is connected to the output end of the air pump assembly 24. The air pump assembly 24 is a precision diaphragm air pump structure, and the model of the air pump assembly 24 is NMP09KPDC-S.

[0027] After the initial positioning of the A, B, C pillars and the outer walls of the sill beam by the contacting silicone block 16, the number of the balloon 19 that needs to be filled with gas is determined according to the unretracted extension column 14, and the balloon 19 is inflated by the air pump assembly 24 according to the number, so that the balloon 19 with the corresponding number is inflated, and cooperates with the silicone anti-slip pad 21 to contact the outer walls of the A, B, C pillars and the sill beam, and generate an extrusion force, and then the extrusion force is further enhanced by the silicone protrusion 22, thereby completing the positioning and fixation of the A, B, C pillars and the sill beam. This method can not only quickly complete the positioning and fixation of the workpiece, but also can complete the corresponding orientation adjustment according to the welding requirements, and has the advantages of high applicability and low limitations.

[0028] See also Figure 1 and Figure 7The rear end of the operating table 1 is fixedly connected to a vertical plate 26, and the vertical outer wall of the vertical plate 26 is vertically movably connected to a movable sleeve 27. The end of the movable sleeve 27 away from the operating table 1 is fixedly connected to a second screw rod connecting sleeve 28. The inner side wall of the second screw rod connecting sleeve 28 is penetrated and meshed with a second transmission screw 29, and the second transmission screw 29 is rotatably connected between the two mounting blocks 30. The bottom end of the bottom mounting block 30 is fixedly connected to a second motor 31, and the output end of the second motor 31 is transmission-connected to the bottom end of the second transmission screw 29. The movable sleeve 27 is close to the operating table 1. One end is fixedly connected to a plug-in cavity 32, and a flexible sheet 36 is symmetrically fixedly connected to the inside of the plug-in cavity 32, and the outer side wall corresponding to the flexible sheet 36 is evenly fixedly connected to a second limiting protrusion 35 set in a semi-cylindrical structure, and the outer side wall of the second limiting protrusion 35 conflicts with the outer side wall of the first limiting protrusion 34 set in the semi-cylindrical structure, and the first limiting protrusion 34 is symmetrically fixedly connected to the outer walls on both sides of the plug-in block 33 at equal intervals. The plug-in block 33 is plugged into the inside of one end of the plug-in cavity 32, and the bottom end of the plug-in block 33 is fixedly connected to a laser welding head 37 for welding.

[0029] According to the height of the welding area of ​​the processing part, the second transmission screw 29 is driven by the second motor 31 to rotate forward or reverse. Since the second transmission screw 29 and the second screw connecting sleeve 28 form a screw transmission structure, the movable sleeve 27 is driven to move vertically, so that the laser welding head 37 is adapted to the height of the processing area. According to the state and position of the welding area, the plug-in block 33 can be moved inside the plug-in cavity 32, and then the laser welding head 37 is adjusted back and forth so that it is in the optimal welding area. After the movement, the outer wall of the first limiting protrusion 34 is made to conflict with the outer wall of the second limiting protrusion 35 for limiting, and then the welding operation is completed by the laser welding head 37. At the same time, when maintaining the laser welding head 37, the plug-in block 33 can be separated from the plug-in cavity 32, and then the laser welding head 37 at a high place can be separated for maintenance and repair, etc., which improves convenience.

[0030] The specific usage process of this embodiment is: First, according to the size of the components of the two frames, the sliding sleeve 5 is moved horizontally to the left and right, thereby driving the mounting plate 7 and the clamping component installed on the top of the sliding sleeve 5 to complete the synchronous movement so that the parts to be welded correspond to each other; Secondly, the A, B, C columns and the threshold beam are clamped and limited. The ends of the A, B, C columns and the threshold beam away from the welding are clamped. One end of the A, B, C columns and the threshold beam is aligned with the abutting silicone block 16 and pressed, so that the return spring 12 drives the extension sleeve 13 to retract into the inside of the connecting sleeve 11. In this way, the outer walls of the A, B, C columns and the threshold beam will conflict with the outer walls of the abutting silicone block 16. After the limit is reached, the first electromagnetic block 17 is energized to magnetically limit the movable extension column 14. Then, the number of the balloon 19 to be filled with gas is determined based on the unretracted extension column 14, and the air pump assembly 24 is used to inflate the balloon 19 according to the number. When the balloon 19 with the corresponding number is inflated, it cooperates with the silicone anti-slip pad 21 to contact the outer wall of the A, B, C pillars and the door sill beam, generating a squeezing force. The squeezing force is further enhanced by the silicone protrusion 22, thereby completing the positional fixation of the A, B, C pillars and the door sill beam. Afterwards, the movable sleeve 27 is driven to move vertically so that the laser welding head 37 is highly adapted to the processing area. According to the state and position of the welding area, the plug-in block 33 can be moved inside the plug-in cavity 32, and the laser welding head 37 is adjusted forward and backward to be in the optimal welding area. After the movement, the outer wall of the first limiting protrusion 34 and the outer wall of the second limiting protrusion 35 are brought into contact with each other to limit the position, and then the laser welding head 37 completes the welding operation. Finally, the left first bevel gear 44 drives the rotating block 9 to rotate inside the rotating cavity 8, and the right first bevel gear 44 transmits the transmission sleeve 42 and the mounting sleeve 43 to make the right rotating block 9 rotate inside the rotating cavity 8, thereby making the two rotating blocks 9 rotate synchronously to complete the flipping of the workpiece. In this way, an electric vehicle frame laser welding flipping device is completed. It should be noted that the present invention is a laser welding flipping device for an electric vehicle frame. All components are universal standard parts or components known to those skilled in the art. The structure and principle thereof can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and adapted monitoring computers and power supplies, are connected through wires. The specific connection means should refer to the above-mentioned working principle, and the electrical connection is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field.

[0031] Example 2: Please refer to Figure 1 、 Figure 7 and Figure 8 The present invention provides an electric vehicle frame laser welding flipping device, including an operating platform 1, an image capturing device 41 is provided on the top of the operating platform 1, and one end of the image capturing device 41 is fixedly connected to one end of the mounting sleeve 40, the mounting sleeve 40 is provided inside the connecting frame 38, one end of the connecting frame 38 is fixedly connected to one end of the plug-in block 33, damping bearings 39 are fixedly connected to both sides of the connecting frame 38, serial rods are fixedly connected to the inside of the damping bearings 39, and the mounting sleeves 40 are fixedly connected between the serial rods.

[0032] When welding parts in the vehicle frame, strong light will be generated in the welding area, making it difficult for operators to obtain the status of the welding area. In this way, the image capture device 41 can be used to obtain the welding area status image data, and then the welding quality analysis system can perform intelligent analysis to adjust the welding parameters in time. At the same time, according to the size of the welded parts and the different welding locations of the parts, the angle of the image capture device 41 can be adjusted through the damping bearing 39, so that it can better obtain the welding area status image data.

[0033] See also Figure 8 , the image capture device 41 is electrically connected to the welding quality analysis system, and the welding quality analysis system includes an interaction module, an image processing module, an image analysis module and an optimization instruction generation module; The image capture device 41 is interactively connected with the interactive module and the image processing module, the interactive module is electrically connected with the operation terminal, the image processing module is electrically connected with the image analysis module, and the image analysis module is electrically connected with the optimization instruction generation module, and the optimization instruction generation module is electrically connected with the operation terminal.

[0034] The function of the interactive module is to transmit the image data captured by the image capture device 41 to the operation terminal in real time, so that the operator at the operation terminal can observe the welding status without damaging the eyes and make timely adjustments.

[0035] The role of the interactive module is to transmit the image data captured by the image capture device 41 to the operation terminal in real time; The image processing module is used to receive the image parameter data captured by the image capture device 41 according to the capture threshold, pre-process the image parameter data, and transmit the pre-processed image parameter data to the image analysis module. The capture threshold is set according to the flipping rate of the flipping component or manually set by the operator. The higher the flipping rate of the flipping component, the shorter the capture threshold time interval, and vice versa. The image parameter data pre-processing specifically includes applying Gaussian filtering to the image parameter data to reduce the impact of noise on the image, and then performing image enhancement by histogram equalization and contrast-limited adaptive histogram equalization. Finally, the molten pool, arc, and weld of the welding area are separated from the entire image. The image analysis module receives the image parameter data processed by the image processing module, performs molten pool morphology analysis to obtain molten pool state parameters, weld seam formation detection to obtain weld seam formation parameters, and arc state monitoring to obtain welding process stability parameters, and digitally processes the molten pool state parameters, weld seam formation parameters, and welding process stability parameters, and adds corresponding floating thresholds to the digitized molten pool state parameters, weld seam formation parameters, and welding process stability parameters to obtain corresponding optimization parameters, and transmits the optimization parameters to the optimization instruction generation module; The function of the optimization instruction generation module is to generate corresponding optimization specifications for the molten pool state optimization parameters, weld formation optimization parameters and welding process stability optimization parameters, and transmit the optimization specifications to the operation terminal for the operator to make decisions.

[0036] The optimization scheme for the molten pool state optimization parameters is: adjust the molten pool oscillation frequency according to the molten pool state optimization parameters, and enhance or reduce the pulse peak power.

[0037] The optimization scheme for the weld formation optimization parameters is: controlling the flipping rate of the flipping component.

[0038] The optimization scheme for the optimization parameters of the welding process stability is: controlling the output of the air pump assembly 24 to strengthen the squeezing force generated by the balloon 19.

[0039] See also Figure 9 The image analysis module obtains the pool state optimization parameters, weld formation optimization parameters and welding process stability optimization parameters. The specific steps are as follows: S1: Receive image parameter data processed by the image processing module; S2: The temperature distribution is obtained by combining the two-color radiation temperature measurement principle with the image grayscale value; S3: The cooling rate can be calculated based on the expansion rate of the solidification area of ​​the molten pool in the continuous frame images to obtain the molten pool state parameters; S4: Acquire weld width parameter data, height parameter data, weld toe angle parameter data, and transition radius parameter data from the image parameter data; S5: Obtaining weld forming optimization parameters based on weld width parameter data, weld height parameter data, weld toe angle parameter data, and transition radius parameter data; S6: Acquire the number and movement trajectory of spatter particles in the image parameter data to obtain spatter rate parameter data, and acquire arc length fluctuation parameter data; S7: Obtaining welding process stability optimization parameters based on spatter rate parameter data and arc length fluctuation parameter data; S8: Add corresponding floating thresholds to the pool state optimization parameters, weld formation optimization parameters, and welding process stability optimization parameters.

[0040] In S8, corresponding floating thresholds are added to the pool state optimization parameters, weld formation optimization parameters, and welding process stability optimization parameters to obtain the floating thresholds in the current state based on a large amount of data through a deep learning model.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A laser welding flipping device for an electric vehicle frame, comprising an operating table (1), characterized in that: A mounting plate (7) is provided inside the top of the operating table (1), the bottom end of the mounting plate (7) on the left side is fixedly connected to the top of the operating table (1), and the bottom end of the mounting plate (7) on the right side is connected to the top of the sliding sleeve (5), the top of each mounting plate (7) is provided with a rotating cavity (8), and the inside of each rotating cavity (8) is rotatably connected to a rotating block (9), one end of each rotating block (9) is provided with a mounting cavity (10), and the other end of each rotating block (9) is provided with a flip assembly, one end of each mounting cavity (10) is provided with a connecting sleeve (11) in an array, and one end of each connecting sleeve (11) is provided with a reset spring (12), and the reset spring (12) is provided with a rotating block (9). ) are connected to one end of the extension sleeve (13), and the other end of the extension sleeve (13) is connected to one end of the extension column (14), one end of the extension column (14) passes through the interior of the guide groove (15), and the guide groove (15) is installed at one end of the installation cavity (10) at equal intervals, one end of the extension column (14) is installed with a resisting silicone block (16), and the interior of the resisting silicone block (16) is installed with a first electromagnetic block (17), and one end of the extension column (14) close to the resisting silicone block (16) is provided with a groove (18), and the interior of the groove (18) is provided with a balloon (19), and a laser welding head (37) is provided above the operating table (1).

2. The electric vehicle frame laser welding flipping device according to claim 1, characterized in that: A movable cavity (2) is provided inside the operating table (1), one end of the movable cavity (2) is rotatably connected to a first transmission screw (3), and an outer wall of the first transmission screw (3) is meshedly connected to a first screw connecting sleeve (4), the first screw connecting sleeve (4) is installed through the interior of the sliding sleeve (5), and one end of the first transmission screw (3) is transmission-connected to the output end of the first motor (6).

3. The electric vehicle frame laser welding flipping device according to claim 1, characterized in that: The balloon (19) is connected to the inner wall of the groove (18) through an adhesive layer (20), and a silicone anti-slip pad (21) is installed on the outer wall of the balloon (19). Silicone bumps (22) are installed at equal intervals inside the balloon (19), and a transmission tube (23) is installed at one end of the balloon (19). The other end of the transmission tube (23) is connected to the output end of the air pump assembly (24), and the air pump assembly (24) is installed at the top of the installation cavity (10). Second electromagnetic blocks (25) are installed at equal intervals inside the installation cavity (10), and the bottom ends of the second electromagnetic blocks (25) are in contact with the top ends of the corresponding extension columns (14). The extension columns (14) are arranged with a magnetic material structure.

4. The electric vehicle frame laser welding flipping device according to claim 1, characterized in that: A vertical plate (26) is installed at the rear end of the operating table (1), and a movable sleeve (27) is provided on the outer wall of the vertical plate (26). A second screw connecting sleeve (28) is installed at one end of the movable sleeve (27), and a second transmission screw (29) is connected to the inside of the second screw connecting sleeve (28) through which the second transmission screw (29) is engaged. The second transmission screw (29) is rotatably connected between the two mounting blocks (30), and a second motor (31) is installed at the bottom end of the mounting block (30) in transmission connection with the bottom end of the second transmission screw (29).

5. The electric vehicle frame laser welding flipping device according to claim 4, characterized in that: The front end of the movable sleeve (27) is provided with an inserting cavity (32), the front end of the inserting cavity (32) is provided with an inserting block (33), and the outer walls of both sides of the inserting block (33) are provided with first limiting protrusions (34) at equal intervals, the outer wall of the first limiting protrusion (34) is in conflict with the outer wall of the second limiting protrusion (35), and the second limiting protrusion (35) is provided at equal intervals on the outer wall of one end of the flexible sheet (36), and the flexible sheet (36) is symmetrically provided inside the inserting cavity (32).

6. The electric vehicle frame laser welding flipping device according to claim 5, characterized in that: The bottom end of the plug-in block (33) is connected to the top end of the laser welding head (37), and an image capturing device (41) is installed at one end of the laser welding head (37). The top end of the image capturing device (41) is connected to the bottom end of the connecting sleeve (40), and the connecting sleeve (40) is rotatably connected between two damping bearings (39). The damping bearings (39) are all inserted into the side wall of the connecting frame (38), and the connecting frame (38) is installed at one end of the plug-in block (33).

7. The electric vehicle frame laser welding flipping device according to claim 1, characterized in that: A transmission sleeve (42) is installed at one end of the right rotating block (9) away from the mounting cavity (10), and the other end of the transmission sleeve (42) is movably connected to the inside of the mounting sleeve (43). One end of the mounting sleeve (43) and one end of the left rotating block (9) are connected to the flip assembly, and the flip assembly at least includes a first bevel gear (44), a second bevel gear (45), a mounting frame (46), a transmission rod (47), a third bevel gear (48) and a fourth bevel gear (49). One end of the mounting sleeve (43) and one end of the left rotating block (9) are connected to one end of the first bevel gear (44), and the outer wall of the first bevel gear (44) is meshed with the second bevel gear (45). Gear (45), and the second bevel gear (45) and the first bevel gear (44) are both rotatably connected to the top of the mounting frame (46), the mounting frame (46) is symmetrically mounted on both sides of the operating table (1), the bottom end of the second bevel gear (45) is transmission-connected to the top of the third bevel gear (48) through a transmission rod (47), and the outer wall of the third bevel gear (48) is meshed with the outer wall of the fourth bevel gear (49), the third bevel gear (48) and the fourth bevel gear (49) are both rotationally connected to the bottom end of the mounting frame (46), a linkage rod (50) is installed between the fourth bevel gears (49) on both sides, and one end of the fourth bevel gear (49) on the right side is transmission-connected to one end of the third motor (51).

8. The electric vehicle frame laser welding flipping device according to claim 6, characterized in that: The image capture device (41) is electrically connected to a welding quality analysis system, wherein the welding quality analysis system comprises an interaction module, an image processing module, an image analysis module, and an optimization instruction generation module; The image capture device (41) is interactively connected to the interaction module and the image processing module, the interaction module is electrically connected to the operation terminal, the image processing module is electrically connected to the image analysis module, and the image analysis module is electrically connected to the optimization instruction generation module, and the optimization instruction generation module is electrically connected to the operation terminal.

9. The electric vehicle frame laser welding flipping device according to claim 8, characterized in that: The function of the interaction module is to transmit the image data captured by the image capture device (41) to the operation terminal in real time; The image processing module is used to receive the image parameter data captured by the image capturing device (41) according to the capture threshold, pre-process the image parameter data, and transmit the pre-processed image parameter data to the image analysis module; The image analysis module is used to receive the image parameter data processed by the image processing module, perform molten pool morphology analysis to obtain molten pool state parameters, weld seam formation detection to obtain weld seam formation parameters, and arc state monitoring to obtain welding process stability parameters, and digitally process the molten pool state parameters, weld seam formation parameters, and welding process stability parameters, and add corresponding floating thresholds to the digitized molten pool state parameters, weld seam formation parameters, and welding process stability parameters to obtain corresponding optimization parameters, and transmit the optimization parameters to the optimization instruction generation module; The function of the optimization instruction generation module is to generate corresponding optimization specifications for the molten pool state optimization parameters, weld formation optimization parameters and welding process stability optimization parameters, and transmit the optimization instructions to the operation terminal for the operator to make decisions.

10. The electric vehicle frame laser welding flipping device according to claim 8, characterized in that: The specific steps of the image analysis module to obtain the pool state optimization parameters, weld formation optimization parameters and welding process stability optimization parameters are as follows: S1: Receive image parameter data processed by the image processing module; S2: The temperature distribution is obtained by combining the two-color radiation temperature measurement principle with the image grayscale value; S3: The cooling rate can be calculated based on the expansion rate of the solidification area of ​​the molten pool in the continuous frame images to obtain the molten pool state parameters; S4: Acquire weld width parameter data, height parameter data, weld toe angle parameter data, and transition radius parameter data from the image parameter data; S5: Obtaining weld forming optimization parameters based on weld width parameter data, weld height parameter data, weld toe angle parameter data, and transition radius parameter data; S6: Acquire the number and movement trajectory of spatter particles in the image parameter data to obtain spatter rate parameter data, and acquire arc length fluctuation parameter data; S7: Obtaining welding process stability optimization parameters based on spatter rate parameter data and arc length fluctuation parameter data; S8: Add corresponding floating thresholds to the pool state optimization parameters, weld formation optimization parameters, and welding process stability optimization parameters.

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