Auxiliary welding device for new energy automobile parts

Abstract

The invention provides an auxiliary welding device for new energy automobile parts, and relates to the technical field of automobile part manufacturing, the auxiliary welding device comprises a fixed support used for auxiliary welding of the side wall of a battery pack tray, a welding table and a welding platform, 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, a detection table is arranged on the other side of the turnover frame, welding robots are arranged on the left side and the right side of the welding area respectively, a turnover shaft is horizontally and rotationally installed on the turnover frame, and a turnover motor used for driving the turnover shaft to rotate in a reciprocating mode is arranged at one end of the turnover frame. Seamless switching between a welding station and a detection station is achieved through a collaborative overturning mechanism of the overturning frame and the carrying disc, it is ensured that the overturning positioning error is smaller than + / -0.3 degree through a closed-loop control system of the overturning frame and the carrying disc, and the problem of workpiece deviation caused by traditional manual carrying is solved. The magnetic attraction type clamping and locking structure is automatically triggered and locked when a workpiece is pushed in, the three-point positioning design enables the workpiece clamping precision to reach the micron order, meanwhile, the unlocking action is achieved through magnetic attraction linkage, and the tool switching time is greatly shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive parts manufacturing, and particularly to an auxiliary welding device for new energy vehicle accessories. Background Art

[0002] During the welding process of the battery pack tray of new energy vehicles, traditional production processes generally have technical bottlenecks such as serious discretization of processes and lagging quality control. Most existing welding equipment adopts a fixed-station design. After welding is completed, it needs to be manually disassembled and transported to the inspection station. This process is prone to workpiece offset (with an average displacement of more than 0.8 mm) and takes more than 35% of the entire production cycle. Most mainstream welding fixtures on the market rely on bolt-locking structures, which take 3 - 5 minutes for single clamping adjustment and are difficult to achieve rapid adaptation to workpieces of different specifications, resulting in insufficient flexibility of the production line. More prominently, the spatter and slag generated during the welding process are often treated by manual cleaning or simple suction, and the residue rate is as high as 32%, seriously affecting the imaging accuracy of the subsequent vision inspection system. Summary of the Invention

[0003] The present invention relates to an auxiliary welding device for new energy vehicle accessories, which realizes efficient welding and precise detection through intelligent station switching and multi-mechanism collaborative control.

[0004] The present invention provides an auxiliary welding device for new energy vehicle accessories, which specifically includes: a fixed support for assisting in welding the side wall of the battery pack tray, including: a welding table; a turnover frame is provided in the middle of the welding table. One side of the turnover frame on the welding table is a welding area, and the other side is provided with an inspection table. Welding robots are respectively arranged on the left and right sides of the welding area. A turnover shaft is horizontally rotatably installed on the turnover frame, and a turnover motor for driving the turnover shaft to rotate reciprocally is provided at one end of the turnover frame; a turnover connecting seat is fixedly installed on the turnover shaft; the end of the turnover connecting seat extends and is fixedly connected to a carrier plate. A locking frame is perpendicularly fixedly provided at the connection between the carrier plate and the turnover 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; a locking mechanism is provided on the carrier plate for cooperating with the locking frame to fix the pushed-in battery pack tray; an air inspection box is provided at one end of the carrier plate away from the locking frame. After the carrier plate is turned over 180 degrees to the upper part of the inspection table with the turnover connecting seat, the battery pack tray is unloaded and placed. The air inspection box blows and clears the ash at the welding part of the battery pack tray and collects images for inspection; the middle part of the carrier plate is a cavity structure, and a slag collection port facing upward is provided at one end of the carrier plate close to the air inspection box, and the slag collection port is used for collecting welding slag; two symmetrical magnetic attraction blocks are provided upward at one end of the inspection table close to the turnover frame. When the carrier plate is turned over to the upper part of the inspection table, the magnetic attraction blocks and the locking frame form an unlocking structure, and the locking mechanism unlocks and externally pushes the battery pack tray.

[0005] Optionally, two groups of limit support components are symmetrically distributed on the left and right sides of the turning frame base below the turning axis. Each group of limit support components consists of a limit support column and a limit sensor. A spring contact is provided at the upper end of the limit sensor, and the upper end of the limit sensor is higher than the upper end of the limit support column. The limit support column is used to support the turning connecting seat in a horizontal state. The limit sensors on the corresponding side are respectively used to detect that the turning connecting seat is in the welding area and the inspection table side. When it is in the welding area, the welding robot works. When it is in the inspection table side, the air inspection box works.

[0006] Optionally, on the upper end surface of the carrier plate, there are two mutually parallel and symmetrically arranged supporting plates on the left and right, which are used to support the battery pack tray.

[0007] Optionally, a V-shaped grid is provided at the slag collection tray opening. A cleaning frame is arranged along the pushing direction of the battery pack tray in the grid. Cleaning rods are vertically arranged at the end of the cleaning frame corresponding to each grid hole of the grid. Among them, two middle cleaning rods are vertically provided with contact rods facing the air inspection box side. Outside the slag collection tray opening on the other side of the cleaning frame, there is an inverted L-shaped shielding plate. The upper end part of the shielding plate is engaged with the upper port edge of the slag collection tray opening and covers the upper end of the air inspection box. Hanging rods are vertically and slidably sleeved on the vertical plate of the shielding plate symmetrically on the left and right. 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 sleeved on the hanging rod between the retaining ring and the shielding plate. The cleaning frame is synchronously interlocked with the locking mechanism. When the locking mechanism releases the battery pack tray, the cleaning frame follows the action of the locking mechanism and moves from one side to the other side across the grid for ash cleaning and extrudes the shielding plate outward through the contact rod, and the detection mechanism on the air inspection box is exposed.

[0008] Optionally, one end of the carrier plate close to the turning connecting seat is an open end, and a slag discharging plate is vertically and slidably inserted from one side at the open end. A fixed fin is vertically provided at the end of the slag discharging plate and attached to the outside of the carrier plate, and a fixing bolt is vertically provided on the fixed fin and fixed on the carrier plate.

[0009] Optionally, two blocking inserts are symmetrically and vertically slidably inserted into the blocking lock frame. The upper end of the blocking insert is made of a magnet with a magnetic property opposite to that of the magnetic attraction block. The lower end of the blocking insert is beveled toward the carrier plate side. A limiting fin platform is vertically provided on the blocking insert at the upper end of the blocking lock frame. A connecting rod is fixedly connected between the upper ends of the two blocking inserts. Tension springs are respectively fixedly connected between the two ends of the connecting rod and the blocking lock frame. The tension springs provide a downward pulling force for the blocking inserts at all times. An inverted L-shaped anti-disengagement hook plate is vertically upward provided on the blocking lock frame between the two blocking inserts. The anti-disengagement hook plate is used to limit the upward movement and disengagement of the connecting rod. A receiving groove is provided at the middle position of the lower end of the blocking lock frame facing the carrier plate. When the battery pack tray is slid into the tray along the pallet, the inner end side plate of the battery pack tray presses the lower inclined surface of the blocking insert, and the blocking insert moves upward. Until the side plate of the battery pack tray completely passes through, the blocking insert falls back under the action of the tension spring to lock the battery pack tray. When the carrier plate is flipped above the inspection table, the magnetic attraction block attracts the blocking insert to move downward, and the blocking insert disengages from the battery pack tray, and the locking mechanism is unlocked. The battery pack tray is inverted and falls on the inspection table.

[0010] Optionally, an inclined sliding groove is provided below the upper end of the inspection table toward the end away from the flipping frame. The sliding groove is used to guide the battery pack tray to slide outward for a certain distance for inspection. A residue collection tray is provided at the position corresponding to the end of the sliding groove at the middle of the inspection table, which is used to collect the welding slag cleared by the grid in the slag collection tray mouth and the welding slag left at the welding position of the battery pack tray.

[0011] Optionally, an air supply pipe is provided at one end of the air inspection box. The air supply pipe is connected to an external compressor. An CCD camera corresponding to the welding position of the battery pack tray is provided inside the air inspection box. Blowing pipes are respectively provided in parallel on the left and right sides of the CCD camera. The blowing pipes are communicated with the inner cavity of the air inspection box. An electromagnetic control valve is provided on the blowing pipes. After the limit sensor on the side close to the inspection table is triggered, the solenoid valve opens, the CCD camera works synchronously, and the blowing pipes blow air downward to purge the welding slag at the welding position on the lower battery pack tray. The CCD camera records the image of the welding position to judge the welding integrity.

[0012] Optionally, the latch mechanism includes a fixed block, a main rod, a second spring, a connecting sleeve seat, a retaining tongue, a connecting arm, a clamping pull rod, a clamping seat, a guide rod, and side clamping rods. A main rod is vertically slidably provided in the fixed block along the pushing direction of the battery pack tray. One end of the main rod is vertically fixed with a retaining tongue, and the retaining tongue is opposite to the receiving groove. The side edges of the retaining tongue and the receiving groove opposite to each other are chamfered structures for easy insertion. The upper end of the retaining tongue is higher than the support plate 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 frame, and a second spring is sleeved on the main rod at one end of the cleaning frame. The other end of the second spring is fixedly connected to the fixed block. A connecting sleeve seat is fixedly connected to the main rod between the fixed block and the retaining tongue. The left and right ends of the connecting sleeve seat are respectively rotatably connected with connecting arms through pin shafts. The other end of the connecting arm is rotatably connected with a clamping pull rod vertically sliding through the support plate. The outer end of the clamping pull rod is connected to a clamping seat. Side clamping rods for clamping the battery pack tray are provided on the clamping seat. The upper end of the side clamping rod is a truncated cone structure with a wider upper part and a narrower lower part for clamping at the upper edge of the battery pack tray. Guide rods are vertically and symmetrically provided on the clamping seat and are vertically slidably connected to the corresponding support plate. Under the action of the second spring, the main rod always has a thrust towards the air inspection box side, that is, the side clamping rods also have a thrust away from the carrier plate. When in the welding area, the battery pack tray moves along the support plate, squeezing the retaining tongue to move along. When the retaining tongue is inserted into the receiving groove, the retaining plug moves down to lock the battery pack tray, and the side clamping rods also abut against the side wall of the battery pack tray, fixing the battery pack tray. When at the inspection table, the retaining plug is attracted and moved down by the magnetic attraction block to unlock, the side clamping rods expand outwards, and the retaining tongue pushes the battery pack tray outwards into the sliding inclined groove.

[0013] Optionally, the end of the clamping pull rod is a screw joint, and a nut is provided at the screw joint and is vertically fixedly connected to the clamping seat. The position of the clamping seat on the clamping pull rod is adjustable, that is, when the retaining plug locks the battery pack tray, the clamping distance between the side clamping rods and the side wall of the battery pack tray is adjustable.

[0014] The present invention provides an auxiliary welding device for new energy vehicle parts, which has the following beneficial effects: In the present invention, the cooperative flipping mechanism of the flipping frame and the carrier plate realizes seamless switching between the welding and inspection stations. Its closed-loop control system ensures that the flipping positioning error is less than ±0.3 degrees, avoiding the problem of workpiece offset caused by traditional manual handling. The magnetic latch structure is automatically triggered and locked 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 realized through magnetic linkage, greatly shortening the tooling switching time.

[0015] The interlocking mechanism for the exposure of welding slag collection and detection windows innovatively integrates the cleaning process into the station switching process. During the unlocking process of the cleaning rack, welding slag is simultaneously scraped off, and combined with the precise purging of high-pressure air flow, it ensures that there is no residue interference on the detection window. The combination of the CCD camera and sub-pixel image processing technology can automatically identify subtle welding defects, significantly reducing the missed inspection rate. The detachable slag discharge plate and inclined chute design form a closed welding slag collection system, effectively maintaining the cleanliness of the working environment.

[0016] The modular clamping mechanism can be quickly adapted to workpieces of different specifications through screw adjustment, eliminating the cumbersome process of replacing traditional fixtures. The automated process of the entire device compresses the processing cycle of a single product to one-third of the traditional process, while reducing the manual intervention link and the risk of operation errors. The synergistic effect of these technical effects enables this device to reach the leading level in the industry in terms of welding quality, production efficiency, and equipment versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0018] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0019] In the drawings: Figure 1 The first axonometric structural schematic diagram of the present invention is shown; Figure 2 The Figure 1 partial enlarged structure schematic diagram of A in the present invention is shown; Figure 3 The second axonometric structural schematic diagram of the present invention is shown; Figure 4 The Figure 3 partial enlarged structure schematic diagram of B in the present invention is shown; Figure 5 The axonometric structural schematic diagram of the flip connecting seat and the carrier plate part of the present invention is shown; Figure 6 The axonometric structural schematic diagram of the separated state of the carrier plate and the locking mechanism of the present invention is shown; Figure 7 The axonometric structural schematic diagram of the separated state of the semi-section of the carrier plate part and the air inspection box of the present invention is shown; Figure 8 The axonometric structural schematic diagram of the vertical state of the carrier plate carrying the battery pack tray of the present invention is shown; Figure 9 The axonometric structural schematic diagram of the state where the carrier plate carrying the battery pack tray is flipped to the unloading state on the inspection table of the present invention is shown; Figure 10 The battery pack tray produced by this device is shown.

[0020] Reference numerals 1. Welding table 2. Welding robot 3. Turning frame; 301. Turning motor; 302. Turning shaft; 303. Turning connecting seat; 304. Limit support column; 305. Limit sensor 4. Carrier plate; 401. Support plate; 402. Slag collection port; 4021. Grid; 403. Cleaning frame; 4031. Cleaning rod; 4032. Contact rod; 404. Shutter; 4041. Hanging rod; 4042. First spring; 405. Slag discharge plate; 4051. Fixed fin plate; 4052. Fixed bolt 5. Blocking and locking frame; 501. Blocking insert; 5011. Limit fin platform; 502. Link; 503. Anti - detachment hook plate; 504. Tension spring; 505. Accommodating groove 6. Battery pack tray 7. Inspection table; 701. Residue collection tray; 702. Sliding inclined groove; 703. Magnetic attraction block 8. Air inspection box; 801. Air supply pipe; 802. CCD camera; 803. Blowing pipe 9. Locking mechanism; 901. Fixed block; 902. Main rod; 903. Second spring; 904. Connecting socket; 905. Locking tongue; 906. Connecting arm; 907. Clamping pull rod; 9071. Threaded joint; 9072. Nut; 908. Clamping seat; 9081. Guide rod; 909. Side clamping rod Detailed implementation manners

[0021] 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 of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0022] Please refer to Figures 1 to 9 : Embodiment 1 The present invention provides an auxiliary welding device for new energy vehicle parts, including: a fixed support for assisting in welding the side wall of the battery pack tray 6, including: a welding table 1; a turnover frame 3 is arranged in the middle of the welding table 1. The welding table 1 on one side of the turnover frame 3 is a welding area, and an inspection table 7 is arranged on the other side. Welding robots 2 are respectively arranged on the left and right sides of the welding area. A turnover shaft 302 is horizontally rotatably installed on the turnover frame 3, and a turnover motor 301 for driving the turnover shaft 302 to rotate reciprocally is arranged at one end of the turnover frame 3; a turnover connecting seat 303 is fixedly installed on the turnover shaft 302; the end of the turnover connecting seat 303 extends and is fixedly connected to a carrier plate 4. A stop lock frame 5 is vertically fixedly arranged at the connection between the carrier plate 4 and the turnover connecting seat 303. The battery pack tray 6 is horizontally placed on the carrier plate 4, and the stop lock frame 5 stops and locks one end of the battery pack tray 6; a locking mechanism 9 is arranged on the carrier plate 4 for cooperating with the stop lock frame 5 to fix the pushed-in battery pack tray 6; an air inspection box 8 is arranged at one end of the carrier plate 4 away from the stop lock frame 5. After the carrier plate 4 is turned over 180 degrees to the upper part of the inspection table 7, the battery pack tray 6 is unloaded and placed. The air inspection box 8 purges and clears the ash at the welding part of the battery pack tray 6 and collects images for inspection; the middle part of the carrier plate 4 is a cavity structure, and a slag collecting tray opening 402 facing upward is arranged at one end of the carrier plate 4 close to the air inspection box 8, and the slag collecting tray opening 402 is used for collecting welding slag; two symmetric magnetic attraction blocks 703 are arranged upward at one end of the inspection table 7 close to the turnover frame 3. When the carrier plate 4 is turned over to the upper part of the inspection table 7, the magnetic attraction blocks 703 and the stop lock frame 5 form an unlocking structure, and the locking mechanism 9 is unlocked and pushes the battery pack tray 6 outwards.

[0023] Among them, two groups of limit support components are symmetrically distributed on the left and right sides of the base of the turnover frame 3 below the turnover shaft 302. Each group of limit support components consists of a limit support column 304 and a limit sensor 305. A spring contact is arranged at the upper end of the limit sensor 305, and the upper end of the limit sensor 305 is higher than the upper end of the limit support column 304. The limit support column 304 is used to support the turnover connecting seat 303 in a horizontal state. The corresponding limit sensors 305 on one side are respectively used to detect that the turnover connecting seat 303 is in the welding area and the inspection table 7 side. When in the welding area, the welding robot 2 works. When in the inspection table 7 side, the air inspection box 8 works.

[0024] Among them, support plates 401 are symmetrically arranged parallel to each other on the upper end surface of the carrier plate 4, and the support plates 401 are used to support the battery pack tray 6.

[0025] Among them, a V-shaped grid 4021 is provided at the slag collection tray opening 402. A cleaning rack 403 is provided in the grid 4021 along the pushing direction of the battery pack tray 6. At the end of the cleaning rack 403, cleaning rods 4031 are vertically provided in each grid hole corresponding to the grid 4021. Among them, touch rods 4032 facing the air inspection box 8 are vertically provided on the two middle cleaning rods 4031. Outside the slag collection tray opening 402 on the other side of the cleaning rack 403, an inverted L-shaped baffle 404 is provided. The upper end part of the baffle 404 is clamped with the upper port edge of the slag collection tray opening 402 and covers the upper end of the air inspection box 8. On the vertical plate of the baffle 404, hanging rods 4041 are vertically and symmetrically slidably sleeved. One end of the hanging rod 4041 is fixedly connected to the side wall of the slag collection tray opening 402. A retaining ring is provided at the other end of the hanging rod 4041. A first spring 4042 is sleeved on the hanging rod 4041 between the retaining ring and the baffle 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 follows the locking mechanism 9 to move from one side to the other side and slide across the grid 4021 for ash cleaning, and the touch rod 4032 is used to squeeze the baffle 404 to move outward, and the detection mechanism on the air inspection box 8 is exposed.

[0026] Among them, one end of the carrier tray 4 close to the flipping connecting seat 303 is an open end, and a slag discharging plate 405 is vertically and slidably inserted from one side at the open end. At the end of the slag discharging plate 405, a fixed fin 4051 is vertically provided and attached to the outside of the carrier tray 4. A fixed bolt 4052 is vertically provided on the fixed fin 4051 and fixed on the carrier tray 4.

[0027] Among them, two blocking blocks 501 are symmetrically and vertically slidably inserted in the blocking lock frame 5. The upper end of the blocking block 501 is made of a magnet with a magnetic property different from that of the magnetic attraction block 703. The lower end of the blocking block 501 is a beveled structure facing the carrier tray 4. A limiting fin platform 5011 is vertically provided on the blocking block 501 at the upper end of the blocking lock frame 5. A connecting rod 502 is fixedly connected between the upper ends of the two blocking blocks 501. Tension springs 504 are respectively fixedly connected between the two ends of the connecting rod 502 and the blocking lock frame 5. The tension spring 504 provides a downward pulling force for the blocking block 501 all the time. An inverted L-shaped anti-disengagement hook plate 503 is vertically provided upward on the blocking lock frame 5 between the two blocking blocks 501. The anti-disengagement hook plate 503 is used to limit the upward movement and disengagement of the connecting rod 502. A receiving groove 505 is provided at the middle position of the lower end of the blocking lock frame 5 facing the carrier tray 4. When the battery pack tray 6 is pushed in along the pallet 401, the inner end side plate of the battery pack tray 6 squeezes 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 as a whole, the blocking block 501 falls back under the action of the tension spring 504 to lock the battery pack tray 6. When the carrier tray 4 is flipped above the inspection table 7, the magnetic attraction block 703 adsorbs the blocking block 501 to move downward, and the blocking block 501 disengages from the battery pack tray 6, and the locking mechanism 9 is unlocked, and the battery pack tray 6 is inverted and falls on the inspection table 7 at the head of the bed.

[0028] Among them, an inclined sliding groove 702 is provided below the upper end of the inspection table 7 towards the end far from the flipping frame 3. The sliding groove 702 is used to guide the battery pack tray 6 to slide outwards for a certain distance for inspection. At the position corresponding to the end of the sliding groove 702 in the middle of the inspection table 7, there is a debris collection tray 701 for collecting the welding slag cleared from the grid 4021 in the slag collection tray opening 402 and the welding slag remaining at the welding position of the battery pack tray 6.

[0029] Among them, an air supply pipe 801 is provided at one end of the air inspection box 8. The air supply pipe 801 is connected to an external compressor. Inside the air inspection box 8, a CCD camera 802 corresponding to the welding position of the battery pack tray 6 is provided. On the left and right sides of the CCD camera 802, air blowing pipes 803 are arranged in parallel. The air blowing pipes 803 are connected to the inner cavity of the air inspection box 8. An electromagnetic control valve is provided on the air blowing pipes 803. After the limit sensor 305 on the side close to the inspection table 7 is triggered, the solenoid valve opens, the CCD camera 802 works synchronously, and the air blowing pipes 803 blow air downwards to purge the welding slag at the welding position on the lower battery pack tray 6. The CCD camera 802 records the image of the welding position to determine the welding integrity.

[0030] Among them, the locking mechanism 9 includes a fixed block 901, a main rod 902, a second spring 903, a connecting sleeve seat 904, a retaining tongue 905, a connecting arm 906, a clamping pull rod 907, a clamping seat 908, a guide rod 9081 and a side clamping rod 909. A main rod 902 is vertically slidably arranged in the fixed block 901 along the pushing direction of the battery pack tray 6. One end of the main rod 902 is vertically fixed with a retaining tongue 905. The retaining tongue 905 is opposite to the position of the accommodating groove 505. The side edges of the end of the retaining tongue 905 opposite to the accommodating groove 505 are chamfered structures for convenient insertion. The upper end of the retaining tongue 905 is higher than the contact between the support plate 401 and 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 frame 403. A second spring 903 is sleeved on the main rod 902 at one end of the cleaning frame 403. The other end of the second spring 903 is fixedly connected to the fixed block 901. A connecting sleeve seat 904 is fixedly connected to the main rod 902 between the fixed block 901 and the retaining tongue 905. The left and right ends of the connecting sleeve seat 904 are respectively rotatably connected with a connecting arm 906 through a pin shaft. The other end of the connecting arm 906 is rotatably connected with a clamping pull rod 907 vertically sliding through the support plate 401. The outer end of the clamping pull rod 907 is connected to a 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 is a truncated cone structure with a wider upper part and a narrower lower part, which is used to be stuck at the upper edge of the battery pack tray 6. The clamping seat 908 is also vertically provided with guide rods 9081 symmetrically left and right and is vertically slidably connected to the corresponding support plate 401. Under the action of the second spring 903, the main rod 902 always has a thrust towards the air inspection box 8 side, that is, the side clamping rods 909 also have a thrust away from the carrier plate 4. When in the welding area, the battery pack tray 6 moves along the support plate 401, squeezing the retaining tongue 905 to move along. When the retaining tongue 905 is inserted into the accommodating groove 505, the retaining plug 501 moves downwards to lock the battery pack tray 6, and the side clamping rods 909 also abut against the side wall of the battery pack tray 6, and the battery pack tray 6 is fixed. When at the inspection table 7, the retaining plug 501 is attracted by the magnetic block 703 and moves downwards to unlock, the side clamping rods 909 expand outwards, and the retaining tongue 905 pushes the battery pack tray 6 outwards into the sliding inclined groove 702.

[0031] Embodiment 2, on the basis of Embodiment 1, the end of the clamping pull rod 907 is a screw joint 9071. A nut 9072 is provided at the screw joint 9071 and is vertically fixedly connected to the clamping seat 908. The position of the clamping seat 908 on the clamping pull rod 907 can be adjusted, that is, when the retaining plug 501 locks the battery pack tray 6, the clamping distance between the side clamping rods 909 and the side wall of the battery pack tray 6 is adjustable.

[0032] The functions and effects of the above structures are further explained and described below so that those skilled in the art can better understand the technical solution of the present application: The turnover frame 3 in the middle of the welding table 1 is driven by a turnover motor 301 to rotate the turnover shaft 302 precisely by 180 degrees, enabling the carrier plate 4 to switch workstations between the welding area and the inspection table 7. When the carrier plate 4 carries the battery pack tray 6 in the welding area, the welding robot 2 performs bilateral synchronous welding on the fixed support. At this time, the limit support column 304 and the limit sensor 305 of the limit support assembly ensure the horizontal attitude of the turnover connecting seat 303. After the spring contact detects the in-place signal, the welding program is started. The pallet 401 provided on the carrier plate 4 provides precise guidance for the battery pack tray 6, and cooperates with the blocking plug 501 of the blocking lock frame 5 to form an automatic locking under the action of the tension spring 504: when the battery pack tray 6 is pushed in, its side plate squeezes the lower inclined surface of the blocking plug 501 to make the magnet-made blocking plug 501 move upward. After it completely enters, the blocking plug 501 falls back and locks under the action of the tension spring 504, and the anti-disengagement hook plate 503 prevents accidental unlocking by restricting the displacement of the connecting rod 502. This locking structure enables the workpiece positioning accuracy to reach ±0.05 mm, which is more than 80% higher than that of traditional jigs.

[0033] During the welding process, the slag collection tray opening 402 collects the splashed welding slag in real time through the V-shaped grid 4021, and the cleaning frame 403 below it forms an interlocking mechanism with the locking mechanism 9. When the welding is completed and it is flipped to the inspection table 7, the magnetic attraction block 703 adsorbs the blocking plug 501 and moves it downward to unlock. At this time, the main rod 902 of the locking mechanism 9 pushes the blocking tongue 905 to move outward under the action of the second spring 903. At the same time, the connecting arm 906 drives the clamping pull rod 907 to make the side clamping rod 909 disengage from the side of the battery pack tray 6. This action synchronously drives the cleaning frame 403 to move, and the cleaning rod 4031 scrapes the residual welding slag along the grid 4021, and the contact rod 4032 pushes the shielding plate 404 to move outward against the resistance of the first spring 4042, exposing the detection window of the air inspection box 8. This linkage design shortens the time-consuming of the dust cleaning and unlocking processes to within 2 seconds, and the efficiency is 3 times higher than that of traditional step-by-step operations.

[0034] In the detection stage, the blow pipe 803 of the air inspection box 8 opens the high-pressure air flow through the electromagnetic control valve, purges the welding area at a pressure of 0.5 MPa, and cooperates with the CCD camera 802 to perform sub-pixel-level image acquisition, which can identify weld defects less than 0.1 mm. The sliding inclined groove 702 guides the detected battery pack tray 6 to the debris collection tray 701, and at the same time, the slag discharge plate 405 can be quickly disassembled to clean the accumulated slag inside the carrier plate 4. In the second embodiment, further through the cooperation of the screw joint 9071 and the nut 9072 at the end of the clamping pull rod 907, the continuous adjustment of the clamping distance of the side clamping rod 909 from 2 to 10 mm is realized, which can adapt to different specifications of battery pack trays 6, and the adjustment time does not exceed 30 seconds, saving 90% of the time compared with the replacement of traditional jigs.

[0035] Through the coordinated operation of the station switching of the flipping frame 3, the automatic locking and releasing mechanism, and the intelligent detection system, the processing cycle of a single-piece product is compressed from 25 minutes in the traditional process to 8 minutes, and the welding slag removal rate is increased from 68% to 99.2%, significantly improving the production yield. The closed-loop control of the limit sensor 305 and the flipping motor 301 keeps the flipping angle error within ±0.3 degrees, ensuring the precise docking of the detection station and the welding station.

[0036] Working principle: The operator first pushes the battery pack tray 6 along the pallet 401 of the carrier tray 4. At this time, the side wall of the tray contacts the lower inclined surface of the blocking plug 501 of the blocking lock frame 5, forcing the magnet-made blocking plug 501 to move upward against the resistance of the tension spring 504. After the tray is completely inserted, the blocking plug 501 falls back into the receiving groove 505 under the action of the tension spring 504 to complete automatic locking. Synchronously, the locking tongue 905 of the locking mechanism 9 is inserted into the receiving groove 505 under the thrust of the second spring 903, and the connecting arm 906 drives the side clamping roller 909 to clamp the side of the tray through the clamping pull rod 907, forming a three-point positioning structure, so that the positioning accuracy of the workpiece reaches ±0.05 mm.

[0037] In the welding stage, the flipping motor 301 drives the flipping shaft 302 to drive the carrier tray 4 to maintain a horizontal state, and the welding robot 2 synchronously welds the fixed support from both sides. The splashed welding slag falls into the cavity of the carrier tray 4 through the V-shaped grid 4021 of the slag collection tray opening 402, and the cleaning rod 4031 of the cleaning frame 403 forms a dynamic protective layer on the surface of the grid 4021. When the limit sensor 305 detects the welding completion signal, the flipping motor 301 starts to flip 180 degrees, and the flipping connecting seat 303 smoothly transitions above the inspection table 7 under the support of the limit support column 304.

[0038] In the inspection station, the magnetic attraction block 703 and the blocking plug 501 have a magnetic attraction effect, causing the blocking plug 501 to move downward and disengage from the battery pack tray 6. At this time, the main rod 902 of the locking mechanism 9 is pushed by the second spring 903 to drive the locking tongue 905 to move outward to unlock, and at the same time, the clamping pull rod 907 is pulled through the connecting arm 906 to make the side clamping roller 909 disengage from the workpiece. This unlocking action synchronously triggers the lateral movement of the cleaning frame 403, and the cleaning rod 4031 completely scrapes the residual welding slag on the grid 4021. The contact rod 4032 pushes the shielding plate 404 to move outward against the resistance of the first spring 4042, exposing the detection window of the air inspection box 8. The blow pipe 803 blows the weld seam with an air flow of 0.5 MPa, and the CCD camera 802 performs sub-pixel-level image acquisition, with a defect recognition accuracy of 0.08 mm, and the detection data is uploaded to the MES system in real time.

[0039] After the detection is completed, the battery pack tray 6 slides into the area of the debris collection tray 701 along the sliding and tilting groove 702. The operator can quickly clean the welding slag accumulated in the carrier tray 4 by removing the fixing bolts 4052 of the slag discharge plate 405. In the second embodiment, by loosening the nut 9072 to adjust the position of the screw joint 9071 of the clamping pull rod 907, the clamping distance of the side clamping roller 909 can be accurately adjusted within the range of 2-10 mm, and it only takes 30 seconds to adjust the adapter for different models of trays. The whole system forms a closed-loop control through the limit sensor 305 and the flipping motor 301 to ensure that the error of the flipping angle of the carrier tray 4 is ≤±0.3° each time, realizing the seamless connection between the welding and detection stations.

[0040] In this article, the following points need to be noted: 1. The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention, and other structures can refer to the general design.

[0041] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0042] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention.

Claims

1. An auxiliary welding device for new energy vehicle parts, which is used to assist in welding the fixed supports on the side wall of the battery pack tray (6), comprising: Welding table (1); a turnover frame (3) is provided in the middle of the welding table (1). One side of the turnover frame (3) on the welding table (1) is the welding area, and an inspection table (7) is provided on the other side. Welding robots (2) are respectively provided on the left and right sides of the welding area. It is characterized in that a turnover shaft (302) is horizontally rotatably installed on the turnover frame (3), and a turnover motor (301) for driving the turnover shaft (302) to rotate reciprocally is provided at one end of the turnover frame (3); a turnover connecting seat (303) is fixedly installed on the turnover shaft (302); the end of the turnover connecting seat (303) extends and is fixedly connected to a carrier plate (4). A stop lock frame (5) is vertically and fixedly provided at the connection between the carrier plate (4) and the turnover connecting seat (303). The battery pack tray (6) is horizontally placed on the carrier plate (4), and one end of the battery pack tray (6) is stopped and locked by the stop lock frame (5); a locking mechanism (9) is provided on the carrier plate (4) to cooperate with the stop lock frame (5) to fix the pushed-in battery pack tray (6); an air inspection box (8) is provided at one end of the carrier plate (4) far from the stop lock frame (5). After the carrier plate (4) is turned over 180 degrees with the turnover connecting seat (303) above the inspection table (7), the battery pack tray (6) is unloaded and placed. The air inspection box (8) purges and removes dust from the welding part of the battery pack tray (6) and collects images for inspection; the middle of the carrier plate (4) is a cavity structure, and a slag collecting tray opening (402) facing upward is provided at one end of the carrier plate (4) close to the air inspection box (8). The slag collecting tray opening (402) is used for collecting welding slag; two symmetric magnetic attraction blocks (703) are provided upward at one end of the inspection table (7) close to the turnover frame (3). When the carrier plate (4) is turned over above the inspection table (7), the magnetic attraction blocks (703) and the stop lock frame (5) form an unlocking structure, and the locking mechanism (9) is unlocked and externally pushes the battery pack tray (6).

2. The auxiliary welding device for new energy vehicle parts according to claim 1, characterized in that, Two groups of limit support components are symmetrically distributed on the left and right on the base of the turnover frame (3) below the turnover shaft (302). Each group of limit support components consists of a limit support column (304) and a limit sensor (305). A spring contact is provided at the upper end of the limit sensor (305), and the upper end of the limit sensor (305) is higher than the upper end of the limit support column (304). The limit support column (304) is used to support the turnover connecting seat (303) in a horizontal state. The corresponding limit sensors (305) on one side are respectively used to detect that the turnover connecting seat (303) is on the welding area side and the inspection table (7) side. When it is on the welding area side, the welding robot (2) works. When it is on the inspection table (7) side, the air inspection box (8) works.

3. An auxiliary welding device for new energy vehicle parts according to claim 1, characterized in that, On the upper end surface of the carrier plate (4), two symmetric and parallel support plates (401) are provided respectively. The support plates (401) are used to support the battery pack tray (6).

4. An 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 collecting tray opening (402). A cleaning frame (403) is provided in the grid (4021) along the pushing direction of the battery pack tray (6). At the end of the cleaning frame (403), cleaning rods (4031) are vertically provided in each grid hole corresponding to the grid (4021). Among them, touch rods (4032) facing the air inspection box (8) are vertically provided on the two middle cleaning rods (4031). An inverted L-shaped baffle (404) is provided outside the slag collecting tray opening (402) on the other side of the cleaning frame (403). The upper end part of the baffle (404) is clamped with the upper port edge of the slag collecting tray opening (402) and covers the upper end of the air inspection box (8). Hanging rods (4041) are vertically and symmetrically slidably sleeved on the vertical plate of the baffle (404). One end of the hanging rod (4041) is fixedly connected to the side wall of the slag collecting tray opening (402). A retaining ring is provided at the other end of the hanging rod (4041). A first spring (4042) is sleeved on the hanging rod (4041) between the retaining ring and the baffle (404). The cleaning frame (403) is synchronously interlocked with the locking mechanism (9). When the locking mechanism (9) releases the battery pack tray (6), the cleaning frame (403) moves from one side to the other side along with the locking mechanism (9) and slides across the grid (4021) for ash cleaning, and the detection mechanism on the air inspection box (8) is exposed by squeezing the baffle (404) to move out through the touch rod (4032).

5. An auxiliary welding device for new energy vehicle parts according to claim 1, characterized in that, One end of the carrier tray (4) close to the flipping connecting seat (303) is an open end. A slag discharging plate (405) is vertically and slidably inserted from one side at the open end. A fixed fin plate (4051) is vertically provided at the end of the slag discharging plate (405) and is attached to the outside of the carrier tray (4). A fixing bolt (4052) is vertically provided on the fixed fin plate (4051) and is fixed on the carrier tray (4).

6. An auxiliary welding device for new energy vehicle parts according to claim 3, characterized in that, In the blocking lock frame (5), two blocking inserts (501) are symmetrically and vertically slidably inserted. The upper end of the blocking insert (501) is made of a magnet with a magnetic property opposite to that of the magnetic attraction block (703). The lower end of the blocking insert (501) is beveled toward the side of the carrier plate (4). A limiting fin platform (5011) is vertically provided on the blocking insert (501) at the upper end of the blocking lock frame (5). A connecting rod (502) is fixedly connected between the upper ends of the two blocking inserts (501). Tension springs (504) are respectively fixedly connected between the two ends of the connecting rod (502) and the blocking lock frame (5). The tension springs (504) provide a downward pulling force for the blocking inserts (501) all the time. An inverted L-shaped anti-disengagement hook plate (503) is vertically upward provided on the blocking lock frame (5) between the two blocking inserts (501). The anti-disengagement hook plate (503) is used to limit the upward movement and disengagement of the connecting rod (502). A receiving groove (505) is provided at the middle position of the lower end of the blocking lock frame (5) toward the carrier plate (4). When the battery pack tray (6) is slid into the tray (401) along the tray, the inner end side plate of the battery pack tray (6) presses the lower inclined surface of the blocking insert (501), and the blocking insert (501) moves upward. Until the side plate of the battery pack tray (6) passes through as a whole, the blocking insert (501) falls back under the action of the tension spring (504) to lock the battery pack tray (6). When the carrier plate (4) is flipped above the inspection table (7), the magnetic attraction block (703) adsorbs the blocking insert (501) to move downward, and the blocking insert (501) disengages from the battery pack tray (6), and the locking mechanism (9) is unlocked. The battery pack tray (6) is inverted and falls on the inspection table (7).

7. An auxiliary welding device for new energy vehicle parts according to claim 4, characterized in that, An inclined sliding groove (702) is provided below the upper end of the inspection table (7) toward the end far from the flipping frame (3). The sliding groove (702) is used to guide the battery pack tray (6) to slide outward for a certain distance for inspection. A residue collection tray (701) is provided at the position corresponding to the end of the sliding groove (702) in the middle of the inspection table (7) for collecting the welding slag cleared from the grid (4021) in the slag collection port (402) and the welding slag remaining at the welding position of the battery pack tray (6).

8. The auxiliary welding device for new energy vehicle parts according to claim 2, characterized in that, An air supply pipe (801) is provided at one end of the air inspection box (8). The air supply pipe (801) is connected to an external compressor. A CCD camera (802) corresponding to the welding position of the battery pack tray (6) is provided inside the air inspection box (8). Blowing pipes (803) are respectively provided in parallel on the left and right sides of the CCD camera (802). The blowing pipes (803) are connected to the inner cavity of the air inspection box (8). An electromagnetic control valve is provided on the blowing pipes (803). After the limit sensor (305) on the side close to the inspection table (7) is triggered, the solenoid valve is opened, the CCD camera (802) works synchronously, and the blowing pipes (803) blow air downward to purge the welding slag at the welding position of the battery pack tray (6) below. The CCD camera (802) captures the image of the welding position to determine the welding integrity.

9. The auxiliary welding device for new energy vehicle accessories according to claim 6, characterized in that, The card locking mechanism (9) includes a fixed block (901), a main rod (902), a second spring (903), a connecting sleeve seat (904), a retaining tongue (905), a connecting arm (906), a clamping pull rod (907), a clamping seat (908), a guide rod (9081) and a side clamping rod (909). A main rod (902) is vertically slidably arranged in the fixed block (901) along the pushing direction of the battery pack tray (6). One end of the main rod (902) is vertically and fixedly provided with a retaining tongue (905). The retaining tongue (905) is opposite to the position of the accommodating groove (505). The side edges of the end of the retaining tongue (905) opposite to the accommodating groove (505) are chamfered structures for convenient insertion. The upper end of the retaining tongue (905) is higher than the contact between the support plate (401) and 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 frame (403). A second spring (903) is sleeved on the main rod (902) at one end of the cleaning frame (403). The other end of the second spring (903) is fixedly connected to the fixed block (901). A connecting sleeve seat (904) is fixedly connected to the main rod (902) between the fixed block (901) and the retaining tongue (905). The left and right ends of the connecting sleeve seat (904) are respectively rotatably connected with a connecting arm (906) through a pin shaft. The other end of the connecting arm (906) is rotatably connected with a clamping pull rod (907) vertically sliding through the support plate (401). The outer end of the clamping pull rod (907) is connected to a 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) is a truncated cone structure with a wider upper part and a narrower lower part for clamping at the upper edge of the battery pack tray (6). The clamping seat (908) is also vertically and symmetrically provided with guide rods (9081) on the left and right, which are vertically slidably connected to the corresponding support plates (401). Under the action of the second spring (903), the main rod (902) always has a thrust towards the air inspection box (8), that is, the side clamping rods (909) also have a thrust away from the carrier plate (4). When in the welding area, the battery pack tray (6) moves along the support plate (401), squeezing the retaining tongue (905) to move along. When the retaining tongue (905) is inserted into the accommodating groove (505), the retaining plug (501) moves downwards to lock the battery pack tray (6), and the side clamping rods (909) also abut against the side wall of the battery pack tray (6), and the battery pack tray (6) is fixed. When at the inspection table (7), the retaining plug (501) is attracted by the magnetic attraction block (703) and moves downwards to unlock, the side clamping rods (909) expand outwards, and the retaining tongue (905) pushes the battery pack tray (6) into the sliding inclined groove (702).

10. An auxiliary welding device for new energy vehicle parts according to claim 6, characterized in that, The end of the clamping pull rod (907) is a screw joint (9071). A nut (9072) is provided at the screw joint (9071) and is vertically and fixedly connected to the clamping seat (908). The position of the clamping seat (908) on the clamping pull rod (907) is adjustable, that is, when the retaining plug (501) locks the battery pack tray (6), the clamping distance between the side clamping rods (909) and the side wall of the battery pack tray (6) is adjustable.

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