New energy automobile accessory auxiliary welding device

Abstract

The application provides a new energy automobile accessory auxiliary welding device, and relates to the technical field of automobile part manufacturing. The auxiliary welding device comprises a fixing support for assisting in welding the side wall of a battery pack tray, and the fixing support comprises a welding table. A turnover frame is arranged in the middle of the welding table. The welding table on one side of the turnover frame is a welding area, and the other side is provided with an inspection table. Welding robots are arranged on the left and right sides of the welding area. A turnover shaft is horizontally installed on the turnover frame. One end of the turnover frame is provided with a turnover motor for driving the turnover shaft to reciprocating rotate. The seamless switching of the welding and inspection stations is realized by the cooperation of the turnover frame and the turnover mechanism of the carrier plate. The closed-loop control system ensures that the turnover positioning error is less than ±0.3 degrees, and the workpiece deviation problem caused by traditional manual handling is avoided. The magnetic attraction type locking structure is automatically triggered to lock when the workpiece is pushed in. The three-point positioning design makes the workpiece clamping precision reach the micron level. The unlocking action is realized through magnetic attraction linkage, which greatly shortens the tool switching time.

Description

Technical Field

[0001] This invention relates to the field of automotive parts manufacturing technology, and in particular to an auxiliary welding device for new energy vehicle parts. Background Technology

[0002] In the welding process of battery pack trays for new energy vehicles, traditional production processes generally suffer from technical bottlenecks such as severe process fragmentation and lagging quality control. Existing welding equipment mostly adopts a fixed-station design, requiring manual disassembly and transfer to the inspection station after welding. This process easily causes workpiece displacement (average displacement exceeding 0.8mm) and accounts for more than 35% of the entire production cycle. Most mainstream welding fixtures on the market rely on bolt-locking structures, requiring 3-5 minutes for a single clamping and adjustment, and making it difficult to quickly adapt to workpieces of different specifications, resulting in insufficient production line flexibility. More significantly, the spatter generated during welding is often manually swept or simply suctioned out, leaving a residue rate as high as 32%, severely affecting the imaging accuracy of subsequent visual inspection systems. Summary of the Invention

[0003] This invention relates to an auxiliary welding device for new energy vehicle parts, which achieves efficient welding and accurate inspection through intelligent workstation switching and multi-mechanism collaborative control.

[0004] This invention provides an auxiliary welding device for new energy vehicle parts, specifically comprising: a fixed support for assisting welding the side wall of a battery pack tray, including: a welding table; a rotating frame is provided in the middle of the welding table, one side of the welding table is a welding area, and the other side is an inspection table, welding robots are respectively provided on the left and right sides of the welding area, a rotating shaft is horizontally rotatably mounted on the rotating frame, and a rotating motor for driving the rotating shaft to reciprocate is provided at one end of the rotating frame; a rotating connecting seat is fixedly mounted on the rotating shaft; a carrier plate is fixedly connected to the end of the rotating connecting seat, and a locking frame is vertically fixed at the connection between the carrier plate and the rotating connecting seat, the battery pack tray is horizontally placed on the carrier plate, and the locking frame stops and locks. One end of the battery pack tray is fixed; the tray is equipped with a locking mechanism to cooperate with the retaining frame to fix the pushed-in battery pack tray; the end of the tray away from the retaining frame is equipped with a gas detection box. After the tray is rotated 180 degrees with the flipping connecting seat to the top of the inspection table, the battery pack tray is unloaded. The gas detection box blows and cleans the welding joints of the battery pack tray and collects images for inspection; the middle of the tray has a hollow structure, and the end of the tray near the gas detection box is equipped with an upward-facing slag collection port for collecting welding slag; the end of the inspection table near the flipping frame is equipped with two symmetrical magnetic blocks. When the tray is flipped to the top of the inspection table, the magnetic blocks and the retaining frame form an unlocking structure, the locking mechanism unlocks and pushes the battery pack tray outward.

[0005] Optionally, two sets of limiting support assemblies are symmetrically distributed on the left and right sides of the flip frame base below the flip shaft. Each set of limiting support assemblies consists of a limiting support column and a limiting sensor. The upper end of the limiting sensor is provided with a spring contact. The upper end of the limiting sensor is higher than the upper end of the limiting support column. The limiting support column is used to support the flip connecting seat in a horizontal state. The limiting sensors on the corresponding sides are used to detect whether the flip connecting seat is in the welding area or the inspection table side. When it is in the welding area, the welding robot works. When it is in the inspection table side, the gas detection box works.

[0006] Optionally, the upper surface of the carrier tray is provided with symmetrical and parallel support plates, which are used to support the battery pack tray.

[0007] Optionally, the slag collection tray opening is provided with a V-shaped grid, and a cleaning frame is provided in the grid along the direction of the battery pack tray being pushed in. At the end of the cleaning frame, a cleaning rod is vertically provided in each grid hole of the grid. The two central cleaning rods are vertically provided with touch rods facing the gas detection box. An inverted L-shaped cover plate is provided on the outside of the slag collection tray opening on the other side of the cleaning frame. The upper part of the cover plate engages with the upper edge of the slag collection tray opening and covers the upper end of the gas detection box. Hanging rods are symmetrically and vertically slidably mounted on the vertical plate of the cover plate. One end of the hanging rod is fixedly connected to the side wall of the slag collection tray opening, and the other end of the hanging rod is provided with a retaining ring. A first spring is mounted on the hanging rod between the retaining ring and the cover plate. The cleaning frame and the locking mechanism are synchronously interlocked. When the locking mechanism releases the battery pack tray, the cleaning frame moves from one side to the other, slides through the grid for cleaning, and moves outward by pressing the cover plate with the touch rods, exposing the detection mechanism on the gas detection box.

[0008] Optionally, the end of the carrier plate near the flipping connecting seat is an open end, and a slag discharge plate is vertically slidably inserted into the open end from one side. The end of the slag discharge plate is vertically provided with a fixing fin attached to the outside of the carrier plate, and the fixing fin is vertically provided with a fixing bolt fixed to the carrier plate.

[0009] Optionally, the locking frame includes two symmetrically vertically sliding locking blocks. The upper end of each locking block is made of a magnet with a magnetic field opposite to that of the magnetic block, and the lower end of each locking block has a beveled structure facing the carrier plate. A limiting fin is vertically provided on the upper locking block of the locking frame. A connecting rod is fixedly connected between the upper ends of the two locking blocks, and tension springs are fixedly connected to both ends of the connecting rod and the locking frame. The tension springs provide a constant downward pulling force to the locking blocks. An inverted L-shaped anti-disengagement plate is vertically upwardly provided on the locking frame between the two locking blocks to prevent disengagement. The plate is used to limit the upward movement and disengagement of the connecting rod. The lower end of the retaining frame is provided with a receiving groove at the middle position facing the tray. When the battery pack tray slides in along the tray, the inner side plate of the battery pack tray presses the lower inclined surface of the retaining block, and the retaining block moves upward until the side plate of the battery pack tray passes through completely. Then, the retaining block falls back under the action of the tension spring, locking the battery pack tray. When the tray is flipped over to the top of the inspection table, the magnetic block attracts the retaining block to move downward, and the retaining block disengages from the battery pack tray. The locking mechanism is released, and the battery pack tray falls onto the inspection table with the headboard upside down.

[0010] Optionally, the upper end of the inspection platform is provided with an inclined sliding groove at the end away from the flipping frame. The sliding groove is used to guide the battery pack tray to slide outward a certain distance for inspection. A debris collection tray is provided in the middle of the inspection platform at the position corresponding to the end of the sliding groove. It is used to collect the welding slag removed from the grid and the welding slag left at the welding point of the battery pack tray in the slag collection tray.

[0011] Optionally, one end of the gas inspection box is provided with a gas supply pipe, which is connected to an external compressor. Inside the gas inspection box, a CCD camera is provided corresponding to the welding position of the battery pack tray. Air blowing pipes are provided in parallel on the left and right sides of the CCD camera. The air blowing pipes are connected to the inner cavity of the gas inspection box. An electromagnetic control valve is provided on the air blowing pipe. When the limit sensor near the inspection table is triggered, the electromagnetic valve opens, the CCD camera works synchronously, the air blowing pipe blows air downward to sweep away the welding slag at the welding position on the battery pack tray below, and the CCD camera captures an image of the welding position to determine the welding integrity.

[0012] Optionally, the locking mechanism includes a fixed block, a main rod, a second spring, a connecting sleeve, a stop tongue, a connecting arm, a clamping rod, a clamping seat, a guide rod, and a side clamping rod. The fixed block has a main rod that slides vertically along the battery pack tray's pushing direction. A stop tongue is vertically fixed at one end of the main rod, with the stop tongue positioned opposite the receiving groove. The side of the stop tongue opposite the receiving groove has a chamfered structure for easy insertion. The upper end of the stop tongue is higher than the tray and contacts the inner end of the battery pack tray. The other end of the main rod is fixedly connected to the end of the cleaning rack. A second spring is fitted onto the main rod at one end of the cleaning rack, and the other end of the second spring is fixedly connected to the fixed block. A connecting sleeve is fixedly connected to the main rod between the fixed block and the stop tongue. Connecting arms are rotatably connected to the left and right ends of the connecting sleeve via pins. The other end of the connecting arm slides vertically through the tray. The clamping rod is rotatably connected to the clamping pull rod, and the outer end of the clamping pull rod is connected to the clamping seat. The clamping seat is equipped with side clamping rods for clamping the battery pack tray. The upper end of the side clamping rod is a truncated cone structure that is wider at the top and narrower at the bottom, which is used to lock the upper edge of the battery pack tray. The clamping seat is also equipped with guide rods that are symmetrically vertically connected to the corresponding trays and slide vertically. Under the action of the second spring, the main rod always has a pushing force towards the gas detection box, that is, the side clamping rod also has a pushing force away from the tray. In the welding area, the battery pack tray moves along the tray, and the pressing tongue moves along with it. When the tongue is inserted into the receiving groove, the blocking block moves down to lock the battery pack tray, and the side clamping rod also abuts against the side wall of the battery pack tray, fixing the battery pack tray. In the inspection table, the blocking block is attracted by the magnetic block and moves down to unlock, the side clamping rod expands outward, and the blocking tongue pushes the battery pack tray outward into the sliding groove.

[0013] Optionally, the end of the clamping rod is a threaded connector, and the threaded connector is provided with a nut that is vertically fixed to the clamping seat. The position of the clamping seat on the clamping rod is adjustable, that is, when the stop block locks the battery pack tray, the clamping distance between the side clamping rod and the side wall of the battery pack tray is adjustable.

[0014] This invention provides an auxiliary welding device for new energy vehicle parts, which has the following beneficial effects:

[0015] In this invention, the coordinated flipping mechanism of the flipping frame and the carrier tray enables seamless switching between welding and inspection stations. Its closed-loop control system ensures that the flipping positioning error is less than ±0.3 degrees, avoiding the workpiece offset problem caused by traditional manual handling. The magnetic locking structure automatically triggers locking when the workpiece is pushed in. The three-point positioning design enables the workpiece clamping accuracy to reach the micron level. At the same time, the unlocking action is achieved through magnetic linkage, which greatly shortens the tooling switching time.

[0016] The innovative interlocking mechanism for slag collection and inspection window exposure integrates the cleaning process into the workstation switching workflow. The cleaning rack simultaneously scrapes away slag during unlocking, and the precise purging with high-pressure airflow ensures no residue interferes with the inspection window. The combination of a CCD camera and sub-pixel image processing technology automatically identifies minute welding defects, significantly reducing the missed detection rate. The detachable slag discharge plate and inclined chute design form a closed slag collection system, effectively maintaining a clean working environment.

[0017] The modular clamping mechanism allows for rapid adaptation to different workpiece specifications through threaded adjustment, eliminating the cumbersome process of changing traditional fixtures. The automated process of the entire system reduces the processing cycle of a single product to one-third of that of traditional processes, while minimizing manual intervention and reducing the risk of operational errors. The synergistic effect of these technologies enables this equipment to achieve industry-leading levels in welding quality, production efficiency, and equipment versatility. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram:

[0021] Figure 1 A schematic diagram of the first axial view structure of the present invention is shown;

[0022] Figure 2 The present invention is shown Figure 1 Schematic diagram of the A-section structure;

[0023] Figure 3 A schematic diagram of the second axial view structure of the present invention is shown;

[0024] Figure 4 The present invention is shown Figure 3 Schematic diagram of the B-type amplification section;

[0025] Figure 5 This diagram shows an axial view of the flip-up connecting seat and the carrier plate of the present invention.

[0026] Figure 6 This diagram shows an axial view of the carrier disk and locking mechanism of the present invention in a separated state.

[0027] Figure 7 This diagram shows a half-section of the carrier disk portion and an axial view of the gas detection box in a separated state according to the present invention.

[0028] Figure 8This diagram shows a vertical axial view of the battery pack tray of the present invention.

[0029] Figure 9 This diagram shows an axial view of the battery pack tray of the present invention being flipped onto the inspection table for unloading.

[0030] Figure 10 The battery pack tray produced by this device is shown.

[0031] Figure Labels

[0032] 1. Welding station;

[0033] 2. Welding robot;

[0034] 3. Tilting frame; 301. Tilting motor; 302. Tilting shaft; 303. Tilting connecting seat; 304. Limit support column; 305. Limit sensor;

[0035] 4. Carrier tray; 401. Pallet; 402. Slag collection tray opening; 4021. Screen; 403. Cleaning frame; 4031. Cleaning rod; 4032. Contact rod; 404. Shelter; 4041. Hanging rod; 4042. First spring; 405. Slag discharge plate; 4051. Fixing fin; 4052. Fixing bolt;

[0036] 5. Locking bracket; 501. Insert block; 5011. Limiting wing; 502. Connecting rod; 503. Anti-disengagement plate; 504. Tension spring; 505. Receiving groove;

[0037] 6. Battery pack tray;

[0038] 7. Inspection table; 701. Debris collection tray; 702. Sliding chute; 703. Magnetic block;

[0039] 8. Air detection box; 801. Air supply pipe; 802. CCD camera; 803. Air blowing pipe;

[0040] 9. Locking mechanism; 901. Fixing block; 902. Main rod; 903. Second spring; 904. Connecting sleeve; 905. Stop tongue; 906. Connecting arm; 907. Clamping rod; 9071. Threaded joint; 9072. Nut; 908. Clamping seat; 9081. Guide rod; 909. Side clamping rod. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please refer to Figures 1 to 9 Example 1:

[0043] This invention proposes an auxiliary welding device for new energy vehicle parts, comprising: a fixed support for assisting welding the side wall of a battery pack tray 6, including: a welding table 1; a flipping frame 3 is provided in the middle of the welding table 1, one side of the welding table 1 is a welding area, and the other side is a check table 7, welding robots 2 are respectively provided on the left and right sides of the welding area, a flipping shaft 302 is horizontally rotatably mounted on the flipping frame 3, and a flipping motor 301 for driving the flipping shaft 302 to reciprocate is provided at one end of the flipping frame 3; a flipping connecting seat 303 is fixedly mounted on the flipping shaft 302; the end of the flipping connecting seat 303 extends and is fixedly connected to a carrier tray 4, and a stop lock frame 5 is vertically fixed at the connection between the carrier tray 4 and the flipping connecting seat 303, the battery pack tray 6 is placed horizontally on the carrier tray 4, and the stop lock frame 5 stops and locks. One end of the fixed battery tray 6; the carrier tray 4 is equipped with a locking mechanism 9 to cooperate with the retaining frame 5 to fix the pushed-in battery tray 6; the end of the carrier tray 4 away from the retaining frame 5 is equipped with a gas detection box 8. After the carrier tray 4 is rotated 180 degrees with the flipping connecting seat 303 to the top of the inspection table 7, the battery tray 6 is unloaded. The gas detection box 8 blows and cleans the welding joints of the battery tray 6 and collects images for inspection; the middle of the carrier tray 4 is a hollow structure. The end of the carrier tray 4 near the gas detection box 8 is equipped with an upward slag collection port 402, which is used to collect welding slag; the end of the inspection table 7 near the flipping frame 3 is equipped with two symmetrical magnetic blocks 703. When the carrier tray 4 is flipped to the top of the inspection table 7, the magnetic blocks 703 and the retaining frame 5 form an unlocking structure. The locking mechanism 9 unlocks and pushes the battery tray 6 outward.

[0044] Among them, two sets of limiting support components are symmetrically distributed on the base of the flipping frame 3 below the flipping shaft 302. Each set of limiting support components consists of a limiting support column 304 and a limiting sensor 305. The upper end of the limiting sensor 305 is provided with a spring contact. The upper end of the limiting sensor 305 is higher than the upper end of the limiting support column 304. The limiting support column 304 is used to support the flipping connecting seat 303 in a horizontal state. The limiting sensor 305 on the corresponding side is used to detect whether the flipping connecting seat 303 is in the welding area or the inspection table 7 side. When it is in the welding area, the welding robot 2 works. When it is in the inspection table 7 side, the gas detection box 8 works.

[0045] Among them, the upper end surface of the carrier plate 4 is provided with symmetrical and parallel support plates 401, which are used to support the battery pack tray 6.

[0046] The slag collection pan 402 is provided with a V-shaped grid 4021. A cleaning rack 403 is provided within the grid 4021 along the pushing direction of the battery pack tray 6. At the end of the cleaning rack 403, a cleaning rod 4031 is vertically provided in each grid hole of the grid 4021. Two of the central cleaning rods 4031 have vertically provided contact rods 4032 facing one side of the gas detection box 8. An inverted L-shaped cover 404 is provided outside the slag collection pan 402 on the other side of the cleaning rack 403. The upper part of the cover 404 engages with the upper edge of the slag collection pan 402, covering the upper end of the gas detection box 8. On the vertical plate of 4, the hanging rods 4041 are symmetrically and vertically sliding. One end of the hanging rod 4041 is fixedly connected to the side wall of the slag collection pan 402. The other end of the hanging rod 4041 is provided with a retaining ring. The first spring 4042 is installed on the hanging rod 4041 between the retaining ring and the cover plate 404. The cleaning rack 403 is synchronously interlocked with the locking mechanism 9. When the locking mechanism 9 releases the battery pack tray 6, the cleaning rack 403 moves from one side to the other following the action of the locking mechanism 9, slides through the grid 4021 for cleaning, and pushes the cover plate 404 outward through the contact rod 4032, exposing the detection mechanism on the gas detection box 8.

[0047] Among them, the end of the carrier plate 4 near the flipping connecting seat 303 is an open end, and a slag discharge plate 405 is vertically slidably inserted into the open end from one side. The end of the slag discharge plate 405 is vertically provided with a fixing fin 4051 attached to the outside of the carrier plate 4, and the fixing fin 4051 is vertically provided with a fixing bolt 4052 fixed on the carrier plate 4.

[0048] The locking frame 5 includes two symmetrically vertically sliding locking blocks 501. The upper end of each locking block 501 is made of a magnet with a magnetic field opposite to that of the magnetic block 703. The lower end of each locking block 501 has a beveled structure facing the carrier plate 4. A limiting wing 5011 is vertically provided on the upper locking block 501 of the locking frame 5. A connecting rod 502 is fixedly connected between the upper ends of the two locking blocks 501. Tension springs 504 are fixedly connected to both ends of the connecting rod 502 and the locking frame 5, respectively. The tension springs 504 provide a constant downward pulling force to the locking blocks 501. An inverted L-shaped anti-disengagement plate 503 is vertically upwardly provided on the locking frame 5 between the two locking blocks 501 to prevent disengagement. Plate 503 is used to restrict the upward movement and disengagement of connecting rod 502. The lower end of the locking bracket 5 is provided with a receiving groove 505 facing the middle position of the carrier plate 4. When the battery pack tray 6 slides in along the support plate 401, the inner side plate of the battery pack tray 6 presses the lower inclined surface of the blocking block 501, and the blocking block 501 moves upward until the side plate of the battery pack tray 6 passes through completely. Then, the blocking block 501 falls back under the action of the tension spring 504, locking the battery pack tray 6. When the carrier plate 4 is flipped over to the top of the inspection table 7, the magnetic block 703 attracts the blocking block 501 to move downward, and the blocking block 501 disengages from the battery pack tray 6. The locking mechanism 9 is released, and the battery pack tray 6 falls onto the inspection table 7 with its head upside down.

[0049] The inspection platform 7 has an inclined sliding groove 702 at the upper end, which is away from the flipping frame 3. The sliding groove 702 is used to guide the battery pack tray 6 to slide outward a certain distance for inspection. The middle part of the inspection platform 7 is provided with a debris collection tray 701 at the end of the sliding groove 702. The debris collection tray 701 is used to collect the welding slag removed from the grid 4021 in the slag collection tray 402 and the welding slag left at the welding joint of the battery pack tray 6.

[0050] The gas inspection box 8 has an air supply pipe 801 at one end, which is connected to an external compressor. Inside the gas inspection box 8, there is a CCD camera 802 corresponding to the welding position of the battery pack tray 6. On the left and right sides of the CCD camera 802, there are air blowing pipes 803 arranged in parallel. The air blowing pipes 803 are connected to the inner cavity of the gas inspection box 8. The air blowing pipes 803 are equipped with electromagnetic control valves. When the limit sensor 305 near the inspection table 7 is triggered, the electromagnetic valve opens and the CCD camera 802 works synchronously. The air blowing pipes 803 blow air downwards to sweep away the welding slag at the welding position on the battery pack tray 6 below. The CCD camera 802 records the image of the welding position to determine the integrity of the welding.

[0051] The locking mechanism 9 includes a fixing block 901, a main rod 902, a second spring 903, a connecting sleeve 904, a stop tongue 905, a connecting arm 906, a clamping rod 907, a clamping seat 908, a guide rod 9081, and a side clamping rod 909. The main rod 902 is vertically slidable in the fixing block 901 along the pushing direction of the battery pack tray 6. A stop tongue 905 is vertically fixed at one end of the main rod 902. The stop tongue 905 is positioned opposite the receiving groove 505. The side of the end of the stop tongue 905 opposite to the receiving groove 505 is chamfered to facilitate locking. The structure features a tongue 905 whose upper end is higher than the tray 401 and contacts the inner end of the battery pack tray 6. The other end of the main rod 902 is fixedly connected to the end of the cleaning rack 403. A second spring 903 is fitted onto the main rod 902 at one end of the cleaning rack 403, and the other end of the second spring 903 is fixedly connected to the fixing block 901. A connecting sleeve 904 is fixedly connected to the main rod 902 between the fixing block 901 and the tongue 905. Connecting arms 906 are rotatably connected to the left and right ends of the connecting sleeve 904 via pins. The other end of the connecting arm 906... The clamping rod 907, which slides vertically through the tray 401, is rotatably connected to the clamping rod 907. The outer end of the clamping rod 907 is connected to the clamping seat 908. The clamping seat 908 is provided with side clamping rods 909 for clamping the battery pack tray 6. The upper end of the side clamping rod 909 has a truncated cone-shaped structure that is wider at the top and narrower at the bottom, which is used to lock onto the upper edge of the battery pack tray 6. The clamping seat 908 is also provided with guide rods 9081 that are symmetrically arranged vertically on both sides and are vertically slidably connected to the corresponding tray 401. Under the action of the second spring 903, the main rod 902 always has a direction towards the gas detector box 8. The thrust on one side, namely the side clamping rod 909, also has a thrust away from the carrier plate 4. When in the welding area, the battery pack tray 6 moves along the tray plate 401, and the pressing tongue 905 moves along with it. When the tongue 905 is inserted into the receiving groove 505, the blocking block 501 moves down to lock the battery pack tray 6, and the side clamping rod 909 also abuts against the side wall of the battery pack tray 6, fixing the battery pack tray 6. When at the inspection table 7, the blocking block 501 is attracted by the magnetic block 703 and moves down to unlock, the side clamping rod 909 expands outward, and the tongue 905 pushes the battery pack tray 6 outward into the sliding groove 702.

[0052] In Example 2, based on Example 1, the end of the clamping rod 907 is a screw connector 9071. The screw connector 9071 is provided with a nut 9072 and is vertically fixedly connected to the clamping seat 908. The position of the clamping seat 908 on the clamping rod 907 is adjustable. That is, when the stop block 501 locks the battery pack tray 6, the clamping distance between the side clamping rod 909 and the side wall of the battery pack tray 6 is adjustable.

[0053] The following provides further explanation and illustration of the function and effect of the structure mentioned above, so that those skilled in the art can better understand this technical solution:

[0054] The flipping frame 3 in the middle of the welding table 1 is driven by the flipping motor 301 to flip the flipping shaft 302 to precisely flip 180 degrees, allowing the carrier tray 4 to switch positions between the welding area and the inspection table 7. When the carrier tray 4 is carrying the battery pack tray 6 in the welding area, the welding robot 2 performs simultaneous welding on both sides of the fixed support. At this time, the limit support column 304 and the limit sensor 305 of the limit support component ensure the horizontal posture of the flipping connecting seat 303. After the spring contact detects the positioning signal, the welding program is started. The tray plate 401 set on the carrier tray 4 provides precise guidance for the battery pack tray 6. With the help of the stop block 501 of the stop lock frame 5, an automatic locking is formed under the action of the tension spring 504: when the battery pack tray 6 is pushed in, its side plate presses the lower inclined surface of the stop block 501, causing the magnetic stop block 501 to move upward. After it is fully inserted, the stop block 501 falls back and locks under the action of the tension spring 504. The anti-disengagement plate 503 prevents accidental disengagement by limiting the displacement of the connecting rod 502. This locking structure enables workpiece positioning accuracy to reach ±0.05mm, which is more than 80% higher than that of traditional fixtures.

[0055] During welding, the slag collection tray 402 collects spattered welding slag in real time through the V-shaped grid 4021, and the cleaning rack 403 below it forms an interlocking mechanism with the locking mechanism 9. When the welding is completed and the tray is flipped to the inspection table 7, the magnetic block 703 attracts the stop block 501 and moves down to unlock it. At this time, the main rod 902 of the locking mechanism 9 pushes the stop tongue 905 outward under the action of the second spring 903, and at the same time, the connecting arm 906 drives the clamping rod 907 to disengage the side clamping rod 909 from the side of the battery pack tray 6. This action synchronously drives the cleaning rack 403 to move, the cleaning rod 4031 scrapes away residual welding slag along the grid 4021, and the contact rod 4032 pushes the cover plate 404 outward to overcome the resistance of the first spring 4042, exposing the detection window of the gas detection box 8. This linkage design reduces the time for the slag cleaning and unlocking process to within 2 seconds, which is 3 times more efficient than the traditional step-by-step operation.

[0056] During the inspection phase, the air blowing pipe 803 of the air inspection box 8 opens a high-pressure airflow through an electromagnetic control valve to blow the weld at a pressure of 0.5MPa. This, combined with sub-pixel-level image acquisition by the CCD camera 802, can identify weld defects smaller than 0.1mm. The sliding groove 702 guides the inspected battery pack tray 6 to the debris collection tray 701, while the slag discharge plate 405 can be quickly disassembled to clean the accumulated slag inside the tray 4. In the second embodiment, the screw joint 9071 at the end of the clamping rod 907 engages with the nut 9072 to achieve continuous adjustment of the clamping distance of the side clamping roller 909 from 2-10mm. This allows for adaptation to different specifications of battery pack trays 6, with adjustment time not exceeding 30 seconds, saving 90% of the time compared to traditional clamp replacement methods.

[0057] The entire system, through the coordinated operation of the tilting frame 3, the automatic locking and releasing mechanism, and the intelligent detection system, reduces the processing cycle of a single product from 25 minutes in the traditional process to 8 minutes, and increases the slag removal rate from 68% to 99.2%, significantly improving production yield. The closed-loop control of the limit sensor 305 and the tilting motor 301 keeps the tilting angle error within ±0.3 degrees, ensuring precise alignment between the detection station and the welding station.

[0058] Working principle:

[0059] The operator first pushes the battery pack tray 6 along the support plate 401 of the carrier tray 4. At this time, the side wall of the tray contacts the lower inclined surface of the stop block 501 of the locking bracket 5, forcing the magnetic stop block 501 to move upward against the resistance of the tension spring 504. After the tray is fully inserted, the stop block 501 falls back into the receiving groove 505 under the action of the tension spring 504 to complete the automatic locking. Simultaneously, the stop tongue 905 of the locking mechanism 9 is inserted into the receiving groove 505 under the push of the second spring 903. The connecting arm 906 drives the side clamping rod 909 to clamp the side of the tray through the clamping rod 907, forming a three-point positioning structure, so that the workpiece positioning accuracy reaches ±0.05mm.

[0060] During the welding stage, the tilting motor 301 drives the tilting shaft 302 to keep the carrier plate 4 horizontal, and the welding robot 2 performs synchronous welding on the fixed support from both sides. The spattered welding slag falls into the cavity of the carrier plate 4 through the V-shaped grid 4021 of the slag collection tray 402, and the cleaning rod 4031 of the cleaning rack 403 forms a dynamic protective layer on the surface of the grid 4021. When the limit sensor 305 detects the welding completion signal, the tilting motor 301 starts to tilt 180 degrees, and the tilting bracket 303 smoothly transitions to above the inspection table 7 under the support of the limit support column 304.

[0061] In the inspection station, the magnetic block 703 and the retaining block 501 are magnetically attracted, causing the retaining block 501 to move downwards and detach from the battery pack tray 6. At this time, the main rod 902 of the locking mechanism 9, pushed by the second spring 903, drives the stop tongue 905 to move outwards to unlock, and simultaneously pulls the clamping rod 907 through the connecting arm 906 to disengage the side clamping rod 909 from the workpiece. This unlocking action simultaneously triggers the cleaning frame 403 to move laterally, the cleaning rod 4031 to thoroughly scrape away the residual welding slag from the grid 4021, and the contact rod 4032 pushes the cover plate 404 to move outwards against the resistance of the first spring 4042, exposing the inspection window of the air inspection box 8. The air blowing pipe 803 blows the weld seam with a 0.5MPa airflow, and the CCD camera 802 performs sub-pixel level image acquisition, with a defect recognition accuracy of 0.08mm. The inspection data is uploaded to the MES system in real time.

[0062] After inspection, the battery pack tray 6 slides along the sliding groove 702 into the debris collection tray 701 area. Operators can quickly clean the accumulated welding slag inside the tray 4 by removing the fixing bolts 4052 of the slag discharge plate 405. In Example 2, by loosening the nut 9072 and adjusting the position of the screw joint 9071 of the clamping rod 907, the clamping distance of the side clamping rollers 909 can be precisely adjusted within the range of 2-10mm, requiring only 30 seconds to adapt to different tray models. The entire system forms a closed-loop control through the limit sensor 305 and the flipping motor 301, ensuring that the flipping angle error of the tray 4 is ≤±0.3° for each rotation, achieving seamless connection between the welding and inspection stations.

[0063] The following points should be noted in this article:

[0064] 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0065] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0066] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An auxiliary welding device for new energy vehicle parts, used to assist in welding a fixed support on the side wall of a battery pack tray (6), comprising: Welding station (1); a rotating frame (3) is provided in the middle of the welding station (1), the welding station (1) on one side of the rotating frame (3) is the welding area, and the inspection station (7) is provided on the other side. Welding robots (2) are provided on the left and right sides of the welding area respectively. The rotating frame (3) is characterized by a rotating shaft (302) being installed horizontally and rotatably on the rotating frame (3), and a rotating motor (301) for driving the rotating shaft (302) to rotate back and forth is provided at one end of the rotating frame (3); a rotating connecting seat (303) is fixedly installed on the rotating shaft (302); the end of the rotating connecting seat (303) is extended and fixedly connected to the carrier plate (4), and a locking frame (5) is vertically fixed at the connection between the carrier plate (4) and the rotating connecting seat (303). The battery pack tray (6) is placed horizontally on the carrier plate (4), and the locking frame (5) stops and locks one end of the battery pack tray (6); a locking mechanism (9) is provided on the carrier plate (4) for cooperating with the locking frame (5) to fix the pushed-in battery pack tray (6). The carrier plate (4) is equipped with a gas detection box (8) at one end away from the retaining frame (5). After the carrier plate (4) is rotated 180 degrees with the flipping connecting seat (303) to the top of the inspection table (7), the battery pack tray (6) is unloaded. The gas detection box (8) blows and cleans the welding joints of the battery pack tray (6) and collects images for inspection. The carrier plate (4) has a hollow structure in the middle. The end of the carrier plate (4) near the gas detection box (8) is equipped with an upward-facing slag collection port (402). The tray (4) is used to collect welding slag; the inspection table (7) has two symmetrical magnetic blocks (703) at one end near the flipping frame (3). When the tray (4) is flipped to the top of the inspection table (7), the magnetic blocks (703) and the locking frame (5) form an unlocking structure, and the locking mechanism (9) unlocks and pushes the battery pack tray (6) outward; the upper surface of the tray (4) is provided with symmetrical and parallel support plates (401) on the left and right sides, and the support plates (401) are used to support the battery pack tray (6).The locking frame (5) has two symmetrical vertical sliding blocks (501). The upper end of the blocking block (501) is made of a magnet with a magnetic field different from that of the magnetic block (703). The lower end of the blocking block (501) facing the carrier plate (4) has a beveled structure. The upper end of the blocking block (501) of the locking frame (5) is vertically provided with a limiting wing (5011). The upper ends of the two blocking blocks (501) are fixedly connected to a connecting rod (502). The two ends of the connecting rod (502) are respectively fixedly connected to the locking frame (5) with tension springs (504). The tension springs (504) provide a downward pulling force for the blocking blocks (501). The locking frame (5) between the two blocking blocks (501) is vertically provided with an inverted L-shaped anti-disengagement plate (503). The locking mechanism (5) is used to restrict the linkage (502) from moving upward and disengaging. The lower end of the locking frame (5) is provided with a receiving groove (505) facing the middle of the tray (4). When the battery pack tray (6) slides in along the tray (401), the inner side plate of the battery pack tray (6) presses the lower inclined surface of the blocking block (501). The blocking block (501) moves upward until the side plate of the battery pack tray (6) passes through as a whole. Then, the blocking block (501) falls back under the action of the tension spring (504) and locks the battery pack tray (6). When the tray (4) flips over to the top of the inspection table (7), the magnetic block (703) attracts the blocking block (501) to move downward. The blocking block (501) disengages from the battery pack tray (6), the locking mechanism (9) is unlocked, and the battery pack tray (6) falls onto the inspection table (7) with its head upside down.The locking mechanism (9) includes a fixed block (901), a main rod (902), a second spring (903), a connecting sleeve (904), a stop tongue (905), a connecting arm (906), a clamping rod (907), a clamping seat (908), a guide rod (9081), and a side clamping rod (909). The main rod (902) is vertically slidably disposed in the fixed block (901) along the pushing direction of the battery pack tray (6). A stop tongue (905) is vertically fixed at one end of the main rod (902). The stop tongue (905) is positioned opposite to the receiving groove (505). The side of the end of the stop tongue (905) opposite to the receiving groove (505) is for easy access. The chamfered structure is inserted, with the upper end of the tongue (905) higher than the tray (401) and in contact with the inner end of the battery pack tray (6). The other end of the main rod (902) is fixedly connected to the end of the cleaning rack (403), and a second spring (903) is fitted on the main rod (902) at one end of the cleaning rack (403). The other end of the second spring (903) is fixedly connected to the fixing block (901). A connecting sleeve (904) is fixedly connected to the main rod (902) between the fixing block (901) and the tongue (905). The left and right ends of the connecting sleeve (904) are respectively rotatably connected to the connecting arm (906) through the pin. The other end is rotatably connected to the clamping rod (907) that slides vertically through the tray (401). The outer end of the clamping rod (907) is connected to the clamping seat (908). The clamping seat (908) is provided with a side clamping rod (909) for clamping the battery pack tray (6). The upper end of the side clamping rod (909) is a truncated cone structure that is wider at the top and narrower at the bottom, which is used to lock onto the upper edge of the battery pack tray (6). The clamping seat (908) is also provided with guide rods (9081) that are symmetrically arranged on the left and right sides and are vertically connected to the corresponding tray (401). Under the action of the second spring (903), the main rod (902) always has a direction towards the gas detector box (8). The thrust of the side clamp (909) also has a thrust away from the carrier plate (4). In the welding area, the battery pack tray (6) moves along the tray plate (401), and the pressing tongue (905) moves along with it. When the tongue (905) is inserted into the receiving groove (505), the blocking block (501) moves down to lock the battery pack tray (6). The side clamp (909) also abuts against the side wall of the battery pack tray (6), and the battery pack tray (6) is fixed. At the inspection table (7), the blocking block (501) is attracted by the magnetic block (703) and moves down to unlock. The side clamp (909) expands outward, and the tongue (905) pushes the battery pack tray (6) outward into the sliding groove (702).

2. The auxiliary welding device for new energy vehicle parts according to claim 1, characterized in that, Two sets of limiting support components are symmetrically distributed on the base of the flipping frame (3) below the flipping shaft (302). Each set of limiting support components consists of a limiting support column (304) and a limiting sensor (305). The upper end of the limiting sensor (305) is provided with a spring contact. The upper end of the limiting sensor (305) is higher than the upper end of the limiting support column (304). The limiting support column (304) is used to support the flipping connecting seat (303) in a horizontal state. The limiting sensor (305) on the corresponding side is used to detect whether the flipping connecting seat (303) is in the welding area or the inspection table (7). When it is in the welding area, the welding robot (2) works. When it is in the inspection table (7), the gas inspection box (8) works.

3. The auxiliary welding device for new energy vehicle parts according to claim 1, characterized in that, A V-shaped grid (4021) is provided at the slag collection pan (402). A cleaning rack (403) is provided in the grid (4021) along the pushing direction of the battery pack tray (6). A cleaning rod (4031) is vertically provided at the end of the cleaning rack (403) corresponding to each grid hole of the grid (4021). The two cleaning rods (4031) in the middle are vertically provided with touch rods (4032) facing the gas detection box (8). An inverted L-shaped cover plate (404) is provided outside the slag collection pan (402) on the other side of the cleaning rack (403). The upper part of the cover plate (404) engages with the upper edge of the slag collection pan (402) and covers the upper end of the gas detection box (8). 4) The vertical plate is symmetrically mounted with vertical sliding rods (4041). One end of the rod (4041) is fixedly connected to the side wall of the slag collection pan (402). The other end of the rod (4041) is provided with a retaining ring. The first spring (4042) is mounted on the rod (4041) between the retaining ring and the cover plate (404). The cleaning rack (403) is synchronously interlocked with the locking mechanism (9). When the locking mechanism (9) releases the battery pack tray (6), the cleaning rack (403) moves from one side to the other following the action of the locking mechanism (9) to slide through the grid (4021) for cleaning and presses the cover plate (404) outward through the contact rod (4032). The detection mechanism on the gas detection box (8) is exposed.

4. The auxiliary welding device for new energy vehicle parts according to claim 1, characterized in that, The end of the carrier plate (4) near the flipping connecting seat (303) is an open end, and a slag discharge plate (405) is vertically slidably inserted into the open end from one side. The end of the slag discharge plate (405) is vertically provided with a fixing fin (4051) attached to the outside of the carrier plate (4), and the fixing fin (4051) is vertically provided with a fixing bolt (4052) fixed on the carrier plate (4).

5. The auxiliary welding device for new energy vehicle parts according to claim 3, characterized in that, The upper end of the inspection platform (7) is provided with an inclined sliding groove (702) at the end away from the flipping frame (3). The sliding groove (702) is used to guide the battery pack tray (6) to slide outward a certain distance for inspection. The middle part of the inspection platform (7) is provided with a debris collection tray (701) at the end of the sliding groove (702) to collect the welding slag removed from the grid (4021) in the slag collection tray (402) and the welding slag left at the welding point of the battery pack tray (6).

6. The auxiliary welding device for new energy vehicle parts according to claim 2, characterized in that, One end of the gas inspection box (8) is provided with a gas supply pipe (801), which is connected to an external compressor. The gas inspection box (8) is provided with a CCD camera (802) corresponding to the welding position of the battery pack tray (6) on the inside. Air blowing pipes (803) are provided on the left and right sides of the CCD camera (802) respectively. The air blowing pipes (803) are connected to the inner cavity of the gas inspection box (8). An electromagnetic control valve is provided on the air blowing pipe (803). After the limit sensor (305) near the inspection table (7) is triggered, the electromagnetic valve opens and the CCD camera (802) works synchronously. The air blowing pipe (803) blows air downward to sweep away the welding slag at the welding position on the battery pack tray (6) below. The CCD camera (802) records the image of the welding position and determines the welding integrity.

7. The auxiliary welding device for new energy vehicle parts according to claim 1, characterized in that, The end of the clamping rod (907) is a screw joint (9071). A nut (9072) is provided at the screw joint (9071) and is vertically fixed to the clamping seat (908). The position of the clamping seat (908) on the clamping rod (907) is adjustable. That is, when the stop block (501) locks the battery pack tray (6), the clamping distance between the side clamping rod (909) and the side wall of the battery pack tray (6) is adjustable.

Images