A new energy vehicle battery tray welding tool and equipment

Abstract

The present application relates to the field of welding, in particular to a new energy automobile battery tray welding tool and equipment. The tray includes a bottom plate, a frame and a plurality of equal spacing arranged in the frame of long reinforcing ribs, including a platform and a positioning mechanism, the platform is provided with a limiting groove matched with the outer shape of the bottom plate, the positioning mechanism includes an adjustable edge block and an independent pressing plate, the platform is provided with a movable frame capable of lifting, the movable frame is provided with an adjustable edge block around, each long reinforcing rib is provided with an independent pressing plate, each independent pressing plate extends along the length direction of the long reinforcing rib and can move along the width direction of the long reinforcing rib. The present application precisely presses the long reinforcing rib through the independent pressing plate, cooperates the electromagnetic pressure maintaining and the elastic buffer, ensures the stable and reliable pressing, leaves an open channel between the independent pressing plates, completely exposes the welding seam, the welding gun continuously passes without interference, effectively improves the welding quality and automation efficiency.

Description

Technical Field

[0001] This invention relates to the field of welding, specifically to a welding fixture and equipment for a new energy vehicle battery tray. Background Technology

[0002] In the manufacturing process of battery trays for new energy vehicles, welding fixtures are used to precisely fix the tray frame and internal structural components, ensuring welding accuracy and controlling deformation. In existing technologies, battery trays mostly employ laser welding, but manual operation is often used to maintain workpiece stability. This makes it difficult to guarantee continuous and uniform force application, easily leading to slight displacement or vibration of the workpiece during welding, affecting weld quality and structural dimensional accuracy. This approach cannot meet the demands of automated, mass production, severely restricting the welding quality and production efficiency of high-precision components such as battery trays.

[0003] A battery tray Z-axis clamping laser welding fixture, currently disclosed in Chinese Patent Publication No. CN112536537B, includes a main positioning clamping device for clamping and positioning the product and a secondary clamping device for automatically compensating and clamping the product. The main positioning clamping device includes a main frame, on which are provided several sets of fixed clamping mechanisms for clamping the product and several sets of follow-up clamping mechanisms for clamping the secondary frame. The secondary clamping device includes a secondary frame, the outline of which matches the outer contour of the product. The secondary frame is provided with several sets of automatic compensation clamping mechanisms, and several single-guide rod clamping cylinders are distributed around the periphery of the secondary frame.

[0004] According to the aforementioned patent, the patent uses a fixed clamping mechanism to clamp the product part. A robot places a secondary clamping device onto the product part, a quick-connect mechanism engages, and a follow-up clamping mechanism clamps the secondary frame. When the welding torch approaches the follow-up clamping mechanism, the follow-up clamping mechanism opens, causing fluctuations in the Z-axis height of the product part. At this time, the automatic compensation clamping mechanism and the single-guide rod clamping cylinder can compensate for the changes caused by the Z-axis height difference, maintaining the uniformity of the weld seam on the product part.

[0005] However, although the aforementioned patent achieves dynamic clamping of the weld area through a follow-up clamping and automatic compensation mechanism, the follow-up clamping mechanism needs to be frequently opened and closed when the welding torch passes through. Its response speed and robot coordination accuracy directly affect the continuous controlled state of the weld. If the timing is off, it can easily cause instantaneous pressure loss or clamping impact, leading to fluctuations in the weld gap. Therefore, there is a current need for a welding fixture for new energy vehicle battery trays that can achieve continuous and stable clamping of the weld area without frequently opening and closing the clamping mechanism when the welding torch passes through. Summary of the Invention

[0006] To address the problems existing in the prior art, a welding fixture for new energy vehicle battery trays is provided. It uses independent pressure plates to precisely press long reinforcing ribs, and electromagnetic pressure holding and elastic buffering work together to ensure stable and reliable pressing. An open channel is left between the independent pressure plates, the weld is completely exposed, and the welding torch can pass through continuously without interference, effectively improving welding quality and automation efficiency.

[0007] To address the problems of existing technologies, this invention provides a welding fixture for a new energy vehicle battery tray. The tray includes a base plate, a frame, and multiple equally spaced elongated reinforcing ribs arranged in the frame. It includes a platform and a positioning mechanism mounted on the platform. The platform has a limiting groove matching the shape of the base plate. The positioning mechanism includes adjustable side blocks for limiting the frame and independent pressure plates for pressing the elongated reinforcing ribs. The platform has a movable frame capable of lifting and lowering. Each movable frame has one of the adjustable side blocks around its perimeter. Each adjustable side block has a vertical angle matching the corner of the frame. Each elongated reinforcing rib... Each independent pressure plate is provided, and each independent pressure plate extends along the length of the long reinforcing rib and can move along the width of the long reinforcing rib. The platform is provided with a lifting driver for driving the movable frame to rise and fall. When the independent pressure plate is pressed, a non-interference, continuous weld seam area is formed between the long reinforcing rib, the frame, and the bottom plate. Two slide rails are symmetrically provided on the movable frame along the extension direction of the independent pressure plate. The slide rails extend along the arrangement direction of the long reinforcing ribs. Each independent pressure plate has a slider at both ends that is slidably connected to the corresponding slide rail. The weld seam area is formed between every two adjacent independent pressure plates.

[0008] Preferably, the independent pressure plate includes a horizontal pressing part and a connecting part extending vertically upward at both ends. Each slider is provided with a guide rod for sliding of the connecting part. Each guide rod has an anti-detachment part at its upper end. Each anti-detachment part and the corresponding connecting part are provided with a compression spring sleeved on the guide rod.

[0009] Preferably, the lower surface of the horizontal clamping part is fixedly provided with an elastic buffer pad for providing uniform clamping force to the long reinforcing rib.

[0010] Preferably, each guide rod is equipped with an electromagnetic actuator between its anti-detachment part and its corresponding connecting part. The electromagnetic actuator includes a fixed electromagnet fixedly connected to the anti-detachment part and a movable electromagnet fixedly connected to the connecting part. When the two electromagnets are energized and repel each other, the independent pressure plate is in a pressure-holding state.

[0011] Preferably, the platform is provided with a first photoelectric sensor around its perimeter to detect whether the base plate is accurately placed in the limiting groove.

[0012] Preferably, a second photoelectric sensor is provided around the movable frame to detect whether the frame is clamped in the center by the adjustable edge block.

[0013] Preferably, the movable frame is symmetrically provided with two movable plates, each movable plate can move horizontally in a direction perpendicular to the edge of the frame, and each movable plate has an adjustable edge block at both ends.

[0014] Preferably, each movable plate is provided with two movable blocks that are fixedly connected to each adjustable side block and can move along the length of the movable plate, and each movable block is fixedly provided with a return spring between itself and the corresponding movable plate.

[0015] Preferably, the adjustable edge block is made of rubber, forming a flexible clamping interface to buffer clamping stress when in contact with the frame.

[0016] The present invention also provides a welding equipment for a new energy vehicle battery tray, including a robotic welding system and a control system mounted on a platform, and a welding fixture for a new energy vehicle battery tray.

[0017] The advantages of this application compared to the prior art are: 1. This invention achieves efficient overall clamping by synchronously moving the lifting and lowering of the movable frame to drive the clamping mechanism. The movable frame descends smoothly along the guide pillars, ensuring consistent positioning. Adjustable side blocks are located around the movable frame, and their rubber material conforms to the corners of the frame with the vertical angle structure, forming a flexible circumferential limit to prevent damage and compensate for assembly errors.

[0018] Meanwhile, individual pressure plates are positioned corresponding to each long reinforcing rib to provide uniform clamping force. A fixed interval is maintained between the individual pressure plates, ensuring the weld area is completely exposed during clamping without any structural obstruction. This tooling structure achieves precise positioning and reliable constraint of the pallet, guaranteeing interference-free welding throughout the process and improving the stability and consistency of automated welding quality.

[0019] 2. This invention achieves precise alignment of independent pressure plates guided by slide rails. The synergistic action of compression springs and elastic buffer pads provides flexible and uniform initial clamping force, accommodating height errors and preventing damage to the long reinforcing ribs. Furthermore, the electromagnetic actuator generates a repulsive force, superimposed on the preload of the compression springs, causing the independent pressure plates to enter an active pressure-holding state, achieving stable and adjustable continuous clamping, effectively resisting welding vibrations and thermal deformation.

[0020] The independent pressure plates maintain a certain spacing, forming a through-hole open channel to ensure that the weld area is completely exposed and that the welding torch can pass continuously without interference. This achieves high-precision, adaptive, and reliable constraint of the long reinforcing ribs, improving welding quality stability and automated operation efficiency.

[0021] 3. This invention uses a first linear actuator to drive the entire moving plate to achieve rapid centering and initial clamping of the adjustable edge blocks to frames of different sizes. Furthermore, a second linear actuator independently adjusts each moving block, fine-tuning the position of the adjustable edge block to ensure precise contact between its vertical angle surface and the corner of the frame, avoiding bias or poor contact.

[0022] The adjustable edge blocks are made of rubber, forming a flexible interface when clamped, effectively buffering stress, preventing surface damage, and using a high coefficient of friction to suppress edge slippage. They adapt to minor unevenness or assembly deviations in the edge, achieving uniform fit even with slight misalignment, reducing reliance on mechanical precision, improving clamping stability and adaptability, and providing a reliable and precise positioning basis for subsequent welding. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a welding fixture for a new energy vehicle battery tray according to the present invention.

[0024] Figure 2 This is an exploded three-dimensional structural diagram of a welding fixture for a new energy vehicle battery tray according to the present invention.

[0025] Figure 3 This is a three-dimensional structural diagram of the new energy vehicle battery tray of the present invention.

[0026] Figure 4 This is a three-dimensional structural diagram of the positioning mechanism of a welding fixture for a new energy vehicle battery tray according to the present invention.

[0027] Figure 5 This is a partial three-dimensional structural diagram of the positioning mechanism of a welding fixture for a new energy vehicle battery tray according to the present invention.

[0028] Figure 6 This is a three-dimensional structural diagram of an independent pressure plate of a welding fixture for a new energy vehicle battery tray according to the present invention.

[0029] Figure 7 This is a partial three-dimensional cross-sectional view of the independent pressure plate of a welding fixture for a new energy vehicle battery tray according to the present invention.

[0030] Figure 8 This is a three-dimensional structural diagram of the movable frame and adjustable side block of a welding fixture for a new energy vehicle battery tray according to the present invention, with the front facing outwards.

[0031] Figure 9 This is a three-dimensional structural diagram of the movable frame and adjustable side block of a welding fixture for a new energy vehicle battery tray according to the present invention, with the back facing outwards.

[0032] Figure 10 This is the invention Figure 8 Enlarged diagram of point A.

[0033] The following are the labels in the diagram: 1. Tray; 11. Base plate; 111. Pin; 12. Frame; 13. Long reinforcing rib; 2. Platform; 21. Limiting groove; 22. Guide post; 3. Adjustable side block; 31. Moving plate; 32. Moving block; 321. Return spring; 4. Independent pressure plate; 41. Horizontal pressing part; 411. Elastic buffer pad; 42. Connecting part; 421. Compression spring; 5. Movable frame; 51. Guide sleeve; 52. Slide rail; 521. Slider; 522. Guide rod; 523. Anti-detachment part; 53. Electromagnetic actuator; 531. Fixed electromagnet; 532. Movable electromagnet. Detailed Implementation

[0034] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0035] See Figures 1-4 As shown, a welding fixture for a new energy vehicle battery tray is disclosed. The tray 1 includes a base plate 11, a frame 12, and multiple long reinforcing ribs 13 arranged at equal intervals in the frame 12. The fixture includes a platform 2 and a positioning mechanism mounted on the platform 2. The platform 2 has a limiting groove 21 that matches the shape of the base plate 11. The positioning mechanism includes adjustable side blocks 3 for limiting the frame 12 and independent pressure plates 4 for pressing the long reinforcing ribs 13. The platform 2 is equipped with a movable frame 5 that can be raised and lowered. Each movable frame 5 has an adjustable side block 3 on all four sides. Each adjustable side block 3 has a vertical angle that matches the corner of the frame 12. Each long reinforcing rib 13 is respectively equipped with an independent pressure plate 4. Each independent pressure plate 4 extends along the length of the long reinforcing rib 13 and can move along the width of the long reinforcing rib. The platform 2 is equipped with a lifting driver for driving the movable frame 5 to rise and fall. When the independent pressure plates 4 are pressed, a non-interference, continuous weld area is formed between the long reinforcing rib 13, the frame 12, and the base plate 11.

[0036] Each of the four sides of the platform 2 is provided with a guide post 22, and the movable frame 5 is provided with a guide sleeve 51 that cooperates with it at the corresponding position.

[0037] The guide sleeve 51 is slidably fitted onto the guide post 22, enabling precise guidance and smooth movement during the lifting and lowering process of the movable frame 5, effectively preventing uneven loading and jamming, and ensuring uniform transmission of clamping force.

[0038] The lifting drive is not shown in the figure.

[0039] The long reinforcing rib 13 is continuously welded to the upper surface of the base plate 11 along its entire length to achieve a longitudinal load-bearing connection. The two ends of the long reinforcing rib 13 are welded to the inner sidewall of the frame 12. The base plate 11 is welded to the bottom edge of the frame 12 to form a closed and stable tray 1 base.

[0040] During the welding process of tray 1, the battery tray 1 to be welded is first placed on the tooling platform 2. The operator or automated equipment accurately places the base plate 11 into the limiting groove 21 opened on the surface of the platform 2. The contour of the limiting groove 21 is perfectly matched with the shape of the base plate 11, realizing the rapid positioning and initial fixation of the base plate 11, ensuring that it will not be displaced in subsequent operations.

[0041] Subsequently, the lifting drive is activated, driving the movable frame 5 to move downwards as a whole. The movable frame 5 descends vertically and smoothly along the guide columns 22 on the platform 2 via the guide sleeves 51 arranged around it. The guide columns 22 and the guide sleeves 51 form a precision guiding structure, ensuring that the movable frame 5 does not deflect or jam during the lifting process, and that its movement trajectory is highly stable, providing a reliable mechanical reference for subsequent pressing actions.

[0042] After the movable frame 5 descends to the bottom, the adjustable side blocks 3 around its perimeter contact the frame 12 of the tray 1. Each adjustable side block 3 fits against the outer wall surface of the frame 12, achieving circumferential limiting. At the same time, the multiple independent pressure plates 4 on the movable frame 5 also move down. Each independent pressure plate 4 corresponds to a long reinforcing rib 13. When the independent pressure plate 4 descends to contact the upper surface of the long reinforcing rib 13, the lower surface of the independent pressure plate 4 and the long reinforcing rib 13 form a pressing interface.

[0043] During the clamping process, sufficient spacing is maintained between every two adjacent independent clamping plates 4, and they are clamped correspondingly to the long reinforcing ribs 13. Since the clamping plates only cover the top of the long reinforcing ribs 13 and avoid the weld path, the weld area is completely exposed in the clamped state, without any structural obstruction, forming a continuous and undisturbed welding channel. This ensures that the laser welding gun can continuously weld along the entire length without interrupting the welding process, without needing to avoid fixtures or open / close the clamping mechanism midway, thus improving welding efficiency and quality consistency.

[0044] Finally, all adjustable edge blocks 3 and independent pressure plates 4 complete the positioning and clamping of each component of tray 1, and the entire structure is in a stable constrained state. At this time, the welding equipment is started, and the welding torch automatically welds the fillet weld between the long reinforcing rib 13 and the base plate 11, the end weld between the long reinforcing rib 13 and the frame 12, and the peripheral weld between the base plate 11 and the frame 12. Because the tooling provides precise positioning and continuous clamping force, the workpiece has no displacement or vibration during the welding process, effectively avoiding defects such as incomplete fusion and porosity, ensuring that the battery tray 1 has high structural strength and dimensional accuracy.

[0045] After welding is completed, the lifting drive reverses its direction, causing the movable frame 5 to rise and reset. Each independent pressure plate 4 and adjustable edge block 3 detaches from the workpiece, allowing the welded tray 1 to be removed and proceed to the next process. The entire process achieves efficient, stable, and automated welding operations.

[0046] See Figures 3-7 As shown, the movable frame 5 is symmetrically provided with two slide rails 52 along the extension direction of the independent pressure plate 4. The slide rails 52 extend along the arrangement direction of the long reinforcing ribs 13. Each independent pressure plate 4 has a slider 521 at both ends that is slidably connected to the corresponding slide rail 52. The weld area is formed between every two adjacent independent pressure plates 4.

[0047] During the descent of the movable frame 5, the slide rails 52 on both sides guide the independent pressure plates 4 to move stably along the arrangement direction of the long reinforcing ribs 13, ensuring that each independent pressure plate 4 is accurately aligned. The movement of the independent pressure plates 4 is pre-adjusted automatically by manual or automated equipment. The independent pressure plates 4 slide on the slide rails 52 via the sliders 521 at both ends, realizing the position adjustment of the long reinforcing ribs 13 in the width direction.

[0048] However, the adjacent independent pressure plates 4 maintain a fixed distance, which not only accurately corresponds to the long reinforcing rib 13, but also naturally forms a through open area under the pressure state. This area corresponds to the weld position between the long reinforcing rib 13 and the base plate 11, so that the welding gun can pass through continuously and complete the welding without interference.

[0049] See Figures 3-7 As shown, the independent pressure plate 4 includes a horizontal pressing part 41 and a connecting part 42 extending vertically upward at both ends. Each slider 521 is provided with a guide rod 522 for sliding of the connecting part 42. Each guide rod 522 is provided with an anti-detachment part 523 at its upper end. Each anti-detachment part 523 and the corresponding connecting part 42 are provided with a compression spring 421 sleeved on the guide rod 522.

[0050] Each of the elongated reinforcing ribs 13 has pin holes around its perimeter. The bottom plate 11 of the tray 1 has a matching pin shaft 111 for each pin hole, which is used to initially determine the position of the elongated reinforcing ribs 13 so as to facilitate further pressing by the independent pressure plate 4.

[0051] The base plate 11 is provided with corner grooves at the corners of the preliminary limiting frame 12 around its perimeter.

[0052] During the assembly of pallet 1, the base plate 11 is first placed on the platform 2, then the corresponding corner slots of the frame 12 are placed on the base plate 11, and then each long reinforcing rib 13 is placed on the base plate 11 at the position of the corresponding pin 111, providing a reliable initial positioning reference for the pressing process.

[0053] As the movable frame 5 descends, the independent pressure plate 4 moves downwards accordingly. When the horizontal pressing part 41 contacts the upper surface of the long reinforcing rib 13, the compression spring 421 is compressed as the frame continues to descend, allowing the independent pressure plate 4 to adapt to slight height differences while maintaining flexible downward pressure. The continuous preload provided by the compression spring 421 ensures that the independent pressure plate 4 always presses firmly against the long reinforcing rib 13, maintaining a stable pressing state, preventing loosening or gaps during welding, and ensuring the stability of the weld quality.

[0054] See Figure 3 and Figures 5-7 As shown, an elastic buffer pad 411 is fixedly provided on the lower surface of the horizontal pressing part 41 to provide uniform pressing force for the long strip reinforcing rib 13.

[0055] When the independent pressure plate 4 descends and contacts the long reinforcing rib 13, the elastic buffer pad 411 on the lower surface of the horizontal pressing part 41 first contacts the long reinforcing rib 13 and undergoes elastic deformation. The elastic buffer pad 411 evenly distributes the pressing force during the pressing process, avoiding surface damage or stress concentration caused by hard metal contact.

[0056] As the compression continues, the elastic buffer pad 411 continuously provides a flexible reaction force, adapting to minor height differences or tilts of the long reinforcing rib 13 during assembly, ensuring stable and reliable compression. During welding, the elastic buffer pad 411 maintains continuous contact, effectively absorbing vibration, preventing loosening, and ensuring that the weld area is always in a uniform and controllable compression state.

[0057] See Figure 6 and Figure 7 As shown, each guide rod 522 is equipped with an electromagnetic actuator 53 between its anti-detachment part 523 and its corresponding connecting part 42. The electromagnetic actuator 53 includes a fixed electromagnet 531 fixedly connected to the anti-detachment part 523 and a movable electromagnet 532 fixedly connected to the connecting part 42. When the two electromagnets are energized and repel each other, the independent pressure plate 4 is in a pressure-holding state.

[0058] When the movable frame 5 descends to the pressing position, the independent pressure plate 4 initially presses down on the long reinforcing rib 13 through the elastic buffer pad 411. At this time, the electromagnetic actuator 53 on the guide rod 522 starts to work. After being energized, the fixed electromagnet 531 and the movable electromagnet 532 generate a magnetic field in the same direction, forming a mutually repulsive electromagnetic force, which pushes the movable electromagnet 532 to drive the connecting part 42 and the entire independent pressure plate 4 to apply additional pressure downward.

[0059] The repulsive force, superimposed on the preload of the compression spring 421, applies a stable and controllable clamping force to the elongated reinforcing rib 13 via the horizontal clamping part 41, entering an active pressure-holding state. The magnitude of the electromagnetic force can be adjusted by the current to adapt to the clamping requirements of elongated reinforcing ribs 13 of different materials or thicknesses. During the welding process, the electromagnetic actuator 53 is continuously energized to ensure that the independent pressure plate 4 does not loosen due to vibration or thermal deformation, effectively maintaining the weld fit accuracy and improving the stability of welding quality.

[0060] See Figure 2 As shown, the platform 2 is equipped with a first photoelectric sensor around its perimeter to detect whether the base plate 11 is accurately placed in the limiting groove 21, and the movable frame 5 is equipped with a second photoelectric sensor around its perimeter to detect whether the frame 12 is clamped in the center by the adjustable side block 3.

[0061] The first photoelectric sensor and the second photoelectric sensor are not shown in the figure.

[0062] When the base plate 11 is placed on the platform 2, its edge enters the limiting groove 21 area. The first photoelectric sensors around the platform 2 determine whether the base plate 11 is completely inside the limiting groove 21 by detecting the distance between the edge of the base plate 11 and the first photoelectric sensor. The four first photoelectric sensors work together to ensure that the base plate 11 is accurately positioned in both length and width directions, avoiding subsequent assembly errors caused by tilting, offset, or failure to be in place.

[0063] When the movable frame 5 descends, the adjustable side block 3 contacts and clamps the frame 12, fixing the position of the frame 12. At this time, the second photoelectric sensor around the movable frame 5 detects the distance to each side edge of the frame 12 to determine whether it is symmetrically clamped and centered. If the detection values ​​on both sides are consistent, it indicates that the frame 12 is centered; if there is a deviation, it is determined that the clamping is abnormal.

[0064] Two sets of photoelectric sensors collect position signals in real time, feeding back the clamping status of the base plate 11 and the frame 12 to the control system, forming a safety interlock mechanism. Only when both are confirmed to be in place will the system allow the welding process to begin, effectively preventing welding defects caused by misoperation and ensuring quality.

[0065] See Figures 8-10 As shown, two movable plates 31 are symmetrically arranged on the movable frame 5. Each movable plate 31 can move horizontally in a direction perpendicular to the edge of the frame 12. Each movable plate 31 has an adjustable edge block 3 at both ends.

[0066] The platform 2 is equipped with a first linear actuator for driving the movement of two movable plates 31.

[0067] The first linear driver is not shown in the figure.

[0068] When the first linear driver is activated, it pushes the moving plate 31 to move towards the center or outward, thereby adjusting the distance between the two adjustable side blocks 3 to adapt to the frame 12 of the tray 1 of different sizes.

[0069] By precisely controlling the stroke of the moving plate 31, the frame 12 is symmetrically clamped and centered, improving clamping accuracy and providing a stable basic constraint for subsequent pressing and welding.

[0070] See Figures 8-10 As shown, each movable plate 31 is provided with two movable blocks 32 that are fixedly connected to each adjustable side block 3 and can move along the length direction of the movable plate 31. Each movable block 32 and the corresponding movable plate 31 are fixedly provided with a return spring 321.

[0071] The movable plate 31 is provided with a second linear driver for driving the two movable blocks 32 to move.

[0072] The second linear driver is not shown in the figure.

[0073] Since the adjustable edge block 3 has a vertical angle that matches the corner of the tray 1 frame 12, its fitting accuracy with the frame 12 directly affects the clamping effect. After the frame 12 is placed in place, the two side moving plates 31 move as a whole through the first linear driver to achieve initial clamping and centering of the frame 12.

[0074] To further ensure that the vertical included angle of the adjustable edge block 3 precisely fits the outer wall surface of the frame 12, the movable block 32 on each movable plate 31 can be independently driven by the second linear actuator to move slightly along the length of the movable plate 31. This ensures that the included angle surface of the adjustable edge block 3 is completely fitted with the corner of the frame 12, avoiding single-sided contact or tilted pressing. When the second linear actuator releases the driving force, the return spring 321 drives the movable block 32 to return to its original position, thereby moving the adjustable edge block 3 away from the frame 12.

[0075] See Figure 2 , Figure 3 and Figures 8-10 As shown, the adjustable edge block 3 is made of rubber and forms a flexible clamping interface to buffer clamping stress when it comes into contact with the frame 12.

[0076] When the adjustable edge block 3 contacts the frame 12 and a clamping force is applied, the rubber undergoes elastic deformation, forming a flexible clamping interface. This interface effectively buffers the stress generated during clamping, preventing indentations or damage to the surface of the frame 12 caused by rigid metal contact. Simultaneously, the rubber material has a high coefficient of friction, enhancing the friction between the frame 12 and the edge block, preventing slippage due to vibration or inertia during welding.

[0077] In the clamped state, the elastic properties of the rubber can adapt to minor unevenness or dimensional deviations at the edge of the frame 12, achieving uniform fit and improving positioning reliability. Even if there is a slight misalignment when the moving block 32 is finely adjusted for alignment, it can achieve adaptive fit through local deformation, reducing excessive reliance on mechanical precision and improving the overall clamping quality.

[0078] See Figure 1 As shown, a new energy vehicle battery tray welding equipment includes a robot welding system and a control system set on a platform 2, and also includes a new energy vehicle battery tray welding fixture.

[0079] The robotic welding system and control system are not shown in the figure.

[0080] After receiving the ready signal from the control system, the robotic welding system automatically performs multiple continuous welding passes on the pre-positioned and clamped battery tray 1 according to the preset welding path and process parameters. Its welding torch moves precisely along the connection seams between the long reinforcing rib 13 and the base plate 11, and between the frame 12 and the long reinforcing rib 13, to achieve stable formation of high-quality fillet welds and ensure welding consistency and structural strength.

[0081] The control system collects feedback signals from the first and second photoelectric sensors in real time to determine whether the base plate 11 is accurately placed and whether the frame 12 is centered and clamped. It also performs logical interlock control on the lifting driver, the first and second linear drivers, the electromagnetic driver 53, and other actuators. Only after all tooling components are confirmed to be in place will the control system allow the robot to start welding.

[0082] This invention uses the lifting and lowering of the movable frame 5 to drive the clamping mechanism synchronously, ensuring a smooth descent along the guide post 22 and consistent positioning. Adjustable side blocks 3 are located around the movable frame 5. A first linear actuator drives the moving plate 31 to center and clamp the frame 12, and a second linear actuator fine-tunes the moving block 32 to ensure that the adjustable side blocks 3 with vertical angles precisely fit the corners of the frame 12, avoiding bias pressure. The rubber material forms a flexible clamping interface, buffering stress and preventing damage. At the same time, its high coefficient of friction inhibits slippage, and its elasticity can adapt to minor deformations and assembly deviations of the frame 12, improving clamping reliability.

[0083] Each independent pressure plate 4 is positioned corresponding to each long reinforcing rib 13, and is precisely aligned via a slide rail 52. A compression spring 421 and an elastic buffer pad 411 on the lower surface work together to provide flexible pre-tightening force, adapting to height differences and providing uniform compression. When the electromagnetic actuator 53 is energized, it generates a repulsive force, superimposed on the spring force, causing the independent pressure plate 4 to enter an active pressure-holding state, achieving adjustable and stable continuous compression, effectively resisting welding vibration and thermal deformation. A fixed spacing is maintained between each independent pressure plate 4, forming a through-type open channel, ensuring that the weld area between the long reinforcing rib 13 and the base plate 11 is completely exposed, allowing for continuous, uninterrupted welding. This improves the stability and consistency of welding quality and the efficiency of automated production.

[0084] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A welding fixture for a battery tray for new energy vehicles, wherein the tray includes a base plate, a frame, and multiple long reinforcing ribs arranged at equal intervals in the frame; Its features are, This includes the platform and the positioning mechanism set up on the platform; The platform is equipped with a limiting groove that matches the shape of the base plate; The positioning mechanism includes an adjustable edge block for limiting the frame and an independent pressure plate for pressing the long reinforcing rib; The platform is equipped with a movable frame that can be raised and lowered. Each movable frame has an adjustable side block around its perimeter, and each adjustable side block has a vertical angle that matches the corner of the frame. Each long reinforcing rib is respectively provided with an independent pressure plate, and each independent pressure plate extends along the length direction of the long reinforcing rib and can move along the width direction of the long reinforcing rib; The platform is equipped with a lifting drive to move the movable frame up and down; Under the condition of independent pressure plate clamping, the long reinforcing rib forms a non-interfering, continuous weld seam area between the frame and the bottom plate; The movable frame is symmetrically provided with two slide rails along the extension direction of the independent pressure plate. The slide rails extend along the arrangement direction of the long reinforcing ribs. Each independent pressure plate has a slider at both ends that is slidably connected to the corresponding slide rail. The weld seam area is formed between every two adjacent independent pressure plates.

2. The welding fixture for a new energy vehicle battery tray according to claim 1, characterized in that, The independent pressure plate includes a horizontal pressing part and a connecting part extending vertically upward at both ends. Each slider is provided with a guide rod for sliding of the connecting part. Each guide rod has an anti-detachment part at its upper end. Each anti-detachment part and the corresponding connecting part are provided with a compression spring sleeved on the guide rod.

3. The welding fixture for a new energy vehicle battery tray according to claim 2, characterized in that, An elastic buffer pad is fixedly provided on the lower surface of the horizontal clamping part to provide uniform clamping force for the long reinforcing rib.

4. The welding fixture for a new energy vehicle battery tray according to claim 2, characterized in that, Each guide rod is equipped with an electromagnetic actuator between its anti-detachment part and its corresponding connecting part. The electromagnetic actuator includes a fixed electromagnet fixedly connected to the anti-detachment part and a movable electromagnet fixedly connected to the connecting part. When the two electromagnets are energized and repel each other, the independent pressure plate is in a pressure-holding state.

5. The welding fixture for a new energy vehicle battery tray according to claim 1, characterized in that, The platform is equipped with a first photoelectric sensor around its perimeter to detect whether the base plate is accurately placed into the limiting groove.

6. The welding fixture for a new energy vehicle battery tray according to claim 1, characterized in that, The movable frame is equipped with a second photoelectric sensor around its perimeter to detect whether the frame is clamped in the center by the adjustable edge blocks.

7. The welding fixture for a new energy vehicle battery tray according to claim 1, characterized in that, The movable frame is symmetrically equipped with two movable plates, each of which can move horizontally in a direction perpendicular to the edge of the frame, and each movable plate has an adjustable edge block at both ends.

8. The welding fixture for a new energy vehicle battery tray according to claim 7, characterized in that, Each movable plate is provided with two movable blocks that are fixedly connected to each adjustable side block and can move along the length of the movable plate. Each movable block is fixedly provided with a return spring between itself and the corresponding movable plate.

9. A welding fixture for a new energy vehicle battery tray according to claim 8, characterized in that, The adjustable edge block is made of rubber, which forms a flexible clamping interface to buffer clamping stress when it comes into contact with the frame.

10. A welding equipment for a new energy vehicle battery tray, comprising a robotic welding system and a control system mounted on a platform, characterized in that, It also includes a welding fixture for a new energy vehicle battery tray as described in any one of claims 1-9.

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