Automatic welding production line of negative electrode anti-explosion valve

Abstract

The automatic welding production line comprises a rotating table with a plurality of cover plate carrying seats, a negative electrode cover plate feeding station, an anti-explosion valve assembling station, an anti-explosion valve welding station, a welding detection station and a finished product discharging station. The cover plate carrying seat comprises a cover plate carrying groove provided with a positioning column and a plurality of spacing limiting parts; the negative electrode cover plate feeding station comprises a negative electrode cover plate supply device; the anti-explosion valve assembly station comprises an anti-explosion valve supply device and an anti-explosion valve transfer assembly mechanism; the anti-explosion valve welding station comprises an anti-explosion valve welding mechanism; the welding detection station comprises a welding image detection mechanism; the finished product unloading station comprises an NG unloading line, a good product unloading line and an unloading turnover mechanism. High-precision automatic welding of the negative electrode cover plate and the anti-explosion valve can be achieved, and welding operation is smooth and efficient. Through various carrier positioning and visual guidance designs, the pre-alignment precision of the negative electrode cover plate and the anti-explosion valve before welding is reliably guaranteed, and the welding quality is remarkably improved.

Description

Technical Field

[0001] The invention relates to an automatic welding production line for a cathode explosion-proof valve, belonging to the technical field of automatic welding and assembly of cathode explosion-proof valves. Background Art

[0002] The power battery system (power battery PACK, battery pack) is the core energy source for providing driving power for new energy vehicles and is one of the most critical components of new energy vehicles. The power battery system is mainly composed of battery modules, electrical systems, thermal management systems, shells, BMS and other components. The battery modules, electrical systems, thermal management systems and BMS are packaged in the shell to form the main body of the power battery system.

[0003] Power batteries generally include cylindrical batteries and blade batteries. Both cylindrical batteries and blade batteries have battery covers with electrodes, and the battery covers need to be welded with explosion-proof valves. The welding quality of the explosion-proof valve directly affects the overall performance of the battery, especially its safety.

[0004] This case involves the negative electrode cover of a cylindrical battery. The negative electrode cover is a circular ring-shaped structure with radial slots in its inner hole. The circular ring-shaped structure has an eccentrically set valve hole, and the explosion-proof valve needs to be welded on the valve hole. Due to the radial slots and eccentrically set valve holes in the negative electrode cover, it is difficult to achieve automated welding operations. The difficulties mainly lie in the following two points: first, the negative electrode cover is loaded on a tray, and it is difficult to adjust the position of the radial slots, so it is impossible to meet the alignment assembly of the valve hole and the explosion-proof valve. Secondly, the explosion-proof valve of the negative electrode cover is eccentrically welded, and the traditional fully enclosed fixture will cause welding deformation and cannot meet product quality requirements. Summary of the invention

[0005] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art. In view of the problem that the traditional automated production line cannot be applied to the alignment assembly welding and is prone to welding deformation, an automated welding production line for the negative pole explosion-proof valve is proposed.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: An automated welding production line for a negative electrode explosion-proof valve, used for welding a negative electrode cover plate and an explosion-proof valve, wherein the negative electrode cover plate comprises an annular structure, wherein the annular structure comprises an inner hole with a radial slot and an eccentrically arranged valve hole for carrying the explosion-proof valve; The automated welding production line includes a rotating table with a plurality of cover plate carriers, a negative electrode cover plate loading station, an explosion-proof valve assembly station, an explosion-proof valve welding station, a welding inspection station, and a finished product unloading station arranged in sequence along the rotating direction of the rotating table; The cover plate carrier includes at least one cover plate carrier groove, a positioning column for matching with the inner hole is arranged in the cover plate carrier groove, and a plurality of interval limiting parts are arranged at intervals on the outer periphery of the cover plate carrier groove for abutting against the outer peripheral wall of the annular structure; The negative electrode cover plate feeding station includes a negative electrode cover plate supply device for providing a negative electrode cover plate to the cover plate loading slot in a relative position to match the negative electrode cover plate; The explosion-proof valve assembly station includes an explosion-proof valve supply device for providing explosion-proof valves, and an explosion-proof valve transfer assembly mechanism for picking up the discharge of the explosion-proof valve supply device and transferring and assembling it into the valve hole; The explosion-proof valve welding station includes an explosion-proof valve welding mechanism for welding the explosion-proof valve and the valve hole together; The welding inspection station includes a welding image inspection mechanism; The finished product unloading station includes an NG unloading line, a good product unloading line, and an unloading turnover mechanism for rotating and displacing between the cover plate carrier and the NG unloading line or between the cover plate carrier and the good product unloading line. The unloading turnover mechanism is communicatively connected to the welding image detection mechanism.

[0007] Preferably, the negative electrode cover plate supply device comprises a negative electrode cover plate tray supply mechanism, a negative electrode cover plate conveying circulation line, a negative electrode cover plate transfer mechanism for performing negative electrode cover plate turnover between the negative electrode cover plate tray supply mechanism and the feeding end of the negative electrode cover plate conveying circulation line, and a transfer loading mechanism for performing negative electrode cover plate transfer between the discharging end of the negative electrode cover plate conveying circulation line and the cover plate carrier; The negative electrode cover plate conveying circulation line comprises a circulating conveyor belt and a plurality of linearly distributed negative electrode cover plate conveying carriers arranged on the circulating conveyor belt, wherein the negative electrode cover plate conveying carrier is provided with at least one cover plate conveying groove; The negative electrode cover plate transfer mechanism and / or the transfer and feeding mechanism is provided with an explosion-proof cover plate position adjustment mechanism, which includes a position detection unit for collecting the position of the explosion-proof cover plate, and a negative electrode cover plate position adjustment unit communicatively connected to the position detection unit for rotationally adjusting the explosion-proof cover plate.

[0008] Preferably, the negative electrode cover plate transfer mechanism includes the position detection part arranged on the top of the negative electrode cover plate tray supply mechanism, a picking displacement carrier with lifting displacement communicatively connected to the position detection part, the picking displacement carrier is provided with the negative electrode cover plate position adjustment part, and the negative electrode cover plate position adjustment part includes a rotating alignment seat with rotational displacement and a plurality of negative pressure picking ends uniformly distributed circumferentially arranged on the rotating alignment seat.

[0009] Preferably, an eccentrically arranged positioning groove is provided at the bottom of the negative electrode cover plate, and a positioning guide column matching with the positioning groove is provided on the cover plate conveying trough.

[0010] Preferably, the transfer loading mechanism includes a transfer carrier with a transfer displacement, the position detection part located on the transfer carrier path, the negative electrode cover plate position adjustment part is provided on the transfer carrier, and the negative electrode cover plate position adjustment part is a cover plate negative pressure adsorption end with a rotational displacement.

[0011] Preferably, the negative electrode cover plate position adjustment portion is a negative pressure pick-up loading end with a rotationally adjustable displacement and arranged on the transfer carrier.

[0012] Preferably, the explosion-proof valve supply device includes an explosion-proof valve conveyor belt, a flexible vibration disk arranged at the discharge end of the explosion-proof valve conveyor belt, an explosion-proof valve visual guidance mechanism arranged on the top of the flexible vibration disk, an explosion-proof valve conveying circulation line for outputting explosion-proof valves, and a turnover transport mechanism for circulating explosion-proof valves between the flexible vibration disk and the explosion-proof valve conveying circulation line, and the turnover transport mechanism is communicatively connected with the explosion-proof valve visual guidance mechanism.

[0013] Preferably, the explosion-proof valve conveying circulation line comprises a circulation belt and a plurality of linearly distributed explosion-proof valve carriers arranged on the circulation belt, the explosion-proof valve conveying circulation line is provided with at least one explosion-proof valve flipping mechanism which is relatively matched with the explosion-proof valve carrier, the explosion-proof valve flipping mechanism comprises a flipping carrying arm with flipping displacement and a flipping carrying slot arranged on the flipping carrying arm, and a negative pressure locking end is arranged in the flipping carrying slot; The turnover transport mechanism includes an explosion-proof valve negative pressure pickup end, and the explosion-proof valve negative pressure pickup end has a turnover displacement between the turnover loading slot and the flexible vibration disk and between the explosion-proof valve carrier and the flexible vibration disk.

[0014] Preferably, the explosion-proof valve transfer assembly mechanism includes a transfer carrier with a transfer displacement and an explosion-proof valve transfer negative pressure picking end arranged on the transfer carrier.

[0015] Preferably, the good product unloading line comprises a good product unloading circulating belt and a plurality of linearly distributed good product carriers arranged on the good product unloading circulating belt; a good product tray collecting device is provided at the discharge end of the good product unloading line.

[0016] The beneficial effects of the present invention are mainly reflected in: 1. It can realize high-precision automatic welding of the negative electrode cover and the explosion-proof valve, and the welding operation is smooth and efficient.

[0017] 2. Through various carrier positioning and visual guidance designs, the pre-alignment accuracy of the negative electrode cover and the explosion-proof valve before welding is reliably guaranteed, and the welding quality is significantly improved.

[0018] 3. The design of close cooperation of rotating stations makes the production line occupy less space, saving precious space resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a schematic diagram of the overall top view structure of an automated welding production line for a cathode explosion-proof valve of the present invention.

[0020] Figure 2 It is a schematic diagram of the main structure of the automated welding production line in the present invention.

[0021] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A.

[0022] Figure 4 It is a structural schematic diagram of the negative electrode cover plate supply device in the present invention.

[0023] Figure 5 It is a structural schematic diagram of the explosion-proof valve supply device in the present invention.

[0024] Figure 6 It is a structural schematic diagram of the explosion-proof valve transfer assembly mechanism in the present invention.

[0025] Figure 7 It is a structural schematic diagram of the explosion-proof valve welding mechanism in the present invention.

[0026] Figure 8 It is a structural schematic diagram of the welding image detection mechanism in the present invention.

[0027] Fig. 9 It is a structural schematic diagram of the NG unloading line in the present invention.

[0028] Fig.10 It is a structural schematic diagram of the good product unloading line in the present invention.

[0029] Fig.11 It is a structural schematic diagram of the unloading turnover mechanism in the present invention.

[0030] Fig.12 It is a structural schematic diagram of the negative electrode cover plate tray supply mechanism in the present invention.

[0031] Fig.13 It is a structural schematic diagram of the negative electrode cover plate conveying circulation line in the present invention.

[0032] Fig.14 It is a structural schematic diagram of the negative electrode cover plate transfer mechanism in the present invention Fig.15 It is a structural schematic diagram of the transfer and feeding mechanism in the present invention.

[0033] Fig.16 It is a structural schematic diagram of the explosion-proof valve conveying circulation line in the present invention.

[0034] Fig.17 It is a schematic diagram of the structure of the good product tray collection device in the present invention.

[0035] Fig.18 It is a schematic diagram of the assembly structure of the negative electrode cover plate and the explosion-proof valve of the negative electrode explosion-proof valve in the present invention. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant inventions, rather than to limit the inventions. It should also be noted that, for ease of description, only the parts related to the relevant inventions are shown in the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0038] The present invention provides an automated welding production line for a cathode explosion-proof valve, such as Fig.18 As shown, it is used for welding the negative electrode cover plate 100 and the explosion-proof valve 200. The negative electrode cover plate 100 includes a circular ring-shaped structural member, and the circular ring-shaped structural member includes an inner hole 400 with a radial slot 300 and an eccentrically arranged valve hole 500 for carrying the explosion-proof valve.

[0039] like Figures 1 to 11 As shown, the automated welding production line includes a rotating table 1 with a plurality of cover plate carriers 10, negative electrode cover plate loading stations 2, explosion-proof valve assembly stations 3, explosion-proof valve welding stations 4, welding inspection stations 5, and finished product unloading stations 6, which are arranged in sequence along the rotating direction of the rotating table 1.

[0040] The cover plate carrier 10 includes at least one cover plate carrier groove 11, in which a positioning column 12 for matching with the inner hole is provided, and the outer periphery of the cover plate carrier groove 11 is provided with a plurality of interval limiting parts 13 arranged at intervals for abutting against the outer peripheral wall of the annular structure.

[0041] The negative electrode cover plate feeding station 2 includes a negative electrode cover plate supply device 20 for providing a negative electrode cover plate 100 that is relatively matched to the cover plate loading slot.

[0042] The explosion-proof valve assembly station 3 comprises an explosion-proof valve supply device 7 for providing the explosion-proof valve 200 and an explosion-proof valve transfer assembly mechanism 30 for picking up the output of the explosion-proof valve supply device and transferring and assembling it into the valve hole.

[0043] The explosion-proof valve welding station 4 comprises an explosion-proof valve welding mechanism 40 for welding the explosion-proof valve and the valve hole together.

[0044] The welding inspection station 5 includes a welding image inspection mechanism 50 .

[0045] The finished product unloading station 6 includes an NG unloading line 61, a good product unloading line 62, and an unloading turnover mechanism 63 for rotating and displacing between the cover plate carrier and the NG unloading line or between the cover plate carrier and the good product unloading line. The unloading turnover mechanism is communicatively connected to the welding image detection mechanism.

[0046] Specific implementation process and principle description: The negative electrode cover plate supply device 20 carries the negative electrode cover plate 100 to the plate carrier 10. The negative electrode cover plate 100 is limitedly disposed in the cover plate loading slot 11 and is accurately limited by the positioning column 12 and the spacing limiter 13.

[0047] The rotating table 1 rotates and switches to the explosion-proof valve assembly station 3. At this time, the explosion-proof valve transfer assembly mechanism 30 picks up the explosion-proof valve 200 provided by the explosion-proof valve supply device 7, and mounts it on the valve hole 500 of the explosion-proof valve, and then switches to the explosion-proof valve welding station 4. The explosion-proof valve welding mechanism 40 welds the explosion-proof valve and the negative electrode cover plate. During welding, since the spacing limit part 13 is evenly distributed and the limit is reliable, it can provide a certain welding stress release and heat dissipation, so that the welding quality is guaranteed.

[0048] At the welding inspection station 5, welding quality inspection is carried out by the welding image inspection mechanism 50, and classified unloading is carried out at the finished product unloading station 6 according to the inspection results. The unloading turnover mechanism 63 picks up the welding finished product for unloading operation on the NG unloading line 61 or the good product unloading line 62.

[0049] like Figure 4 , Figures 12 to 15As shown, the negative electrode cover plate supply device 20 includes a negative electrode cover plate tray supply mechanism 21, a negative electrode cover plate conveying circulation line 22, a negative electrode cover plate transfer mechanism 23 for circulating negative electrode cover plates between the negative electrode cover plate tray supply mechanism and the feeding end of the negative electrode cover plate conveying circulation line, and a transfer loading mechanism 24 for transferring negative electrode cover plates between the discharging end of the negative electrode cover plate conveying circulation line and the cover plate carrier.

[0050] The negative electrode cover plate conveying circulation line 22 comprises a circulating conveyor belt 221 and a plurality of linearly distributed negative electrode cover plate conveying carriers 222 arranged on the circulating conveyor belt, and at least one cover plate conveying trough 223 is provided on the negative electrode cover plate conveying carrier.

[0051] The negative electrode cover plate transfer mechanism 23 and / or the transfer and feeding mechanism 24 are provided with an explosion-proof cover plate position adjustment mechanism 8, which includes a position detection unit 81 for collecting the position of the explosion-proof cover plate, and a negative electrode cover plate position adjustment unit 82 which is communicatively connected to the position detection unit and is used for rotationally adjusting the explosion-proof cover plate.

[0052] Specific implementation process and principle description: When supplying negative electrode cover plates, the negative electrode cover plate tray supply mechanism 21 provides materials, and the negative electrode cover plate transfer mechanism 23 realizes the operation of picking up the negative electrode cover plates and placing them on the negative electrode cover plate conveying circulation line 22 by switching displacement and lifting displacement in the horizontal plane, and the transfer loading mechanism 24 picks up the materials on the negative electrode cover plate conveying circulation line 22 and loads them onto the cover plate loading slot 11 of the cover plate carrier 10.

[0053] It should be noted that the negative electrode cover plate tray supply mechanism 21 supplies materials in batches through a tray, and it is difficult to ensure the initial position of the negative electrode cover plate. Therefore, when it is placed on the cover plate carrier slot 11 during circulation, there will be a positioning deviation. For this situation, an explosion-proof cover plate position adjustment mechanism 8 is designed, which can collect the position information of the negative electrode cover plate through a position detection unit, and adjust the position of the negative electrode cover plate through a negative electrode cover plate position adjustment unit, so as to meet the position accuracy of the cover plate in the cover plate carrier slot 11.

[0054] Specifically, the negative electrode cover plate transfer mechanism 23 includes a position detection part arranged on the top of the negative electrode cover plate tray supply mechanism, a picking displacement carrier 230 with lifting displacement communicated with the position detection part, and a negative electrode cover plate position adjustment part 82 is provided on the picking displacement carrier. The negative electrode cover plate position adjustment part includes a rotating alignment seat with rotational displacement and a plurality of negative pressure picking ends uniformly distributed circumferentially arranged on the rotating alignment seat.

[0055] Specific implementation process and principle description: The position information of the negative electrode cover on the tray is collected by the position detection unit, and the displacement carrier 230 is used for centering picking. The negative electrode cover position adjustment unit 82 corrects the position according to the position information, thereby meeting the transfer requirements after adjusting the position accuracy.

[0056] In a specific embodiment, an eccentrically arranged positioning groove is provided at the bottom of the negative electrode cover plate, and a positioning guide column 2230 matching with the positioning groove is provided on the cover plate conveying groove 223 .

[0057] That is, by adjusting the position of the positioning guide column 2230 and the negative electrode cover plate transfer mechanism 23, high-precision transfer and loading of the negative electrode cover plate is achieved, and the position of the discharge end is reliable.

[0058] In a specific embodiment, the transfer loading mechanism 24 includes a transfer carrier 240 with a transfer displacement, a position detection unit 81 located on the transfer carrier path, and a negative electrode cover plate position adjustment unit 82 is provided on the transfer carrier 240 .

[0059] Specifically, when the transfer loading mechanism 24 sucks the material, the position detection unit 81 can collect the image of the negative electrode cover plate picked up, thereby achieving the adjustment requirement of visually guiding the loading.

[0060] More specifically, the negative electrode cover plate position adjustment unit 82 is a negative pressure pick-up loading end with a rotationally adjustable displacement disposed on the transfer carrier, which can achieve linear and rotational visually guided adjustment.

[0061] In a specific embodiment, Figure 5 As shown, the explosion-proof valve supply device 7 includes an explosion-proof valve conveyor belt 71, a flexible vibration disk 72 arranged at the discharge end of the explosion-proof valve conveyor belt, an explosion-proof valve visual guidance mechanism 73 arranged on the top of the flexible vibration disk, an explosion-proof valve conveying circulation line 74 for outputting the explosion-proof valve, and a turnover transport mechanism 75 for circulating the explosion-proof valve between the flexible vibration disk and the explosion-proof valve conveying circulation line. The turnover transport mechanism is communicatively connected with the explosion-proof valve visual guidance mechanism.

[0062] Specifically, the explosion-proof valve conveyor belt 71 feeds materials to the flexible vibration plate 72, the flexible vibration plate 72 vibrates after receiving the materials, the explosion-proof valve visual guidance mechanism 73 collects the image of the materials on the flexible vibration plate 72, and then guides the turnover conveying mechanism 75 to pick up the materials and place them on the explosion-proof valve conveying circulation line 74.

[0063] In a specific embodiment, Fig.16As shown, the explosion-proof valve conveying circulation line 74 includes a circulation belt 741 and a plurality of linearly distributed explosion-proof valve carriers 742 arranged on the circulation belt, and at least one explosion-proof valve flipping mechanism 743 that cooperates with the explosion-proof valve carrier is provided on the explosion-proof valve conveying circulation line, and the explosion-proof valve flipping mechanism 743 includes a flipping carrier arm 7431 with a flipping displacement and a flipping carrier slot 7432 arranged on the flipping carrier arm, and a negative pressure locking end is provided in the flipping carrier slot.

[0064] The turnover transport mechanism comprises an explosion-proof valve negative pressure picking end, which has a turnover displacement between the flip loading tank and the flexible vibration plate and between the explosion-proof valve carrier and the flexible vibration plate.

[0065] Specifically, the flexible vibration plate 72 is used to disperse the material evenly. The material has a front and a back side. The explosion-proof valve flipping mechanism 743 can realize the flipping and loading of the reverse material, that is, the front and back materials can be loaded separately.

[0066] In a specific embodiment, Figure 6 As shown, the explosion-proof valve transfer assembly mechanism 30 includes a transfer carrier 31 with a transfer displacement and an explosion-proof valve transfer negative pressure picking end 32 arranged on the transfer carrier.

[0067] That is, it only needs to meet the requirements of picking up, transferring and loading the explosion-proof valve.

[0068] In a specific embodiment, the good product unloading line 62 includes a good product unloading circulating belt and a plurality of linearly distributed good product carriers arranged on the good product unloading circulating belt; Fig.17 As shown, the discharge end of the good product unloading line is provided with a good product pallet collection device 9. Specifically, a plurality of linearly distributed good product carriers on the product unloading circulation belt can realize the whole row discharge, which is convenient for the subsequent good product pallet collection device 9 to collect the pallets in an orderly manner.

[0069] From the above description, we can find that high-precision automated welding of the negative electrode cover and explosion-proof valve can be achieved, and the welding operation is smooth and efficient. Through various carrier positioning and visual guidance designs, the pre-alignment accuracy of the negative electrode cover and explosion-proof valve before welding is reliably guaranteed, and the welding quality is significantly improved. The design of close cooperation of the rotating station makes the production line occupy less space, saving precious space resources.

[0070] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus / device.

[0071] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An automated welding production line for a negative electrode explosion-proof valve, used for welding a negative electrode cover plate and an explosion-proof valve, wherein the negative electrode cover plate comprises an annular structure, wherein the annular structure comprises an inner hole with a radial slot and an eccentrically arranged valve hole for carrying the explosion-proof valve, characterized in that: The automated welding production line includes a rotating table with a plurality of cover plate carriers, a negative electrode cover plate loading station, an explosion-proof valve assembly station, an explosion-proof valve welding station, a welding inspection station, and a finished product unloading station arranged in sequence along the rotating direction of the rotating table; The cover plate carrier includes at least one cover plate carrier groove, a positioning column for matching with the inner hole is arranged in the cover plate carrier groove, and a plurality of interval limiting parts are arranged at intervals on the outer periphery of the cover plate carrier groove for abutting against the outer peripheral wall of the annular structure; The negative electrode cover plate feeding station includes a negative electrode cover plate supply device for providing a negative electrode cover plate to the cover plate loading slot in a relative position to match the negative electrode cover plate; The explosion-proof valve assembly station includes an explosion-proof valve supply device for providing explosion-proof valves, and an explosion-proof valve transfer assembly mechanism for picking up the discharge of the explosion-proof valve supply device and transferring and assembling it into the valve hole; The explosion-proof valve welding station includes an explosion-proof valve welding mechanism for welding the explosion-proof valve and the valve hole together; The welding inspection station includes a welding image inspection mechanism; The finished product unloading station includes an NG unloading line, a good product unloading line, and an unloading turnover mechanism for rotating and displacing between the cover plate carrier and the NG unloading line or between the cover plate carrier and the good product unloading line. The unloading turnover mechanism is communicatively connected to the welding image detection mechanism.

2. According to claim 1, an automated welding production line for negative electrode explosion-proof valves is characterized by: The negative electrode cover plate supply device includes a negative electrode cover plate tray supply mechanism, a negative electrode cover plate conveying circulation line, a negative electrode cover plate transfer mechanism for performing negative electrode cover plate turnover between the negative electrode cover plate tray supply mechanism and the feeding end of the negative electrode cover plate conveying circulation line, and a transfer loading mechanism for performing negative electrode cover plate transfer between the discharge end of the negative electrode cover plate conveying circulation line and the cover plate carrier; The negative electrode cover plate conveying circulation line comprises a circulating conveyor belt and a plurality of linearly distributed negative electrode cover plate conveying carriers arranged on the circulating conveyor belt, wherein the negative electrode cover plate conveying carrier is provided with at least one cover plate conveying groove; The negative electrode cover plate transfer mechanism and / or the transfer and feeding mechanism is provided with an explosion-proof cover plate position adjustment mechanism, which includes a position detection unit for collecting the position of the explosion-proof cover plate, and a negative electrode cover plate position adjustment unit communicatively connected to the position detection unit for rotationally adjusting the explosion-proof cover plate.

3. According to claim 2, an automated welding production line for negative electrode explosion-proof valves is characterized in that: The negative electrode cover plate transfer mechanism includes the position detection part arranged on the top of the negative electrode cover plate tray supply mechanism, and a picking displacement carrier with lifting displacement communicatively connected to the position detection part; the picking displacement carrier is provided with the negative electrode cover plate position adjustment part, and the negative electrode cover plate position adjustment part includes a rotating alignment seat with rotational displacement and a plurality of negative pressure picking ends evenly distributed circumferentially arranged on the rotating alignment seat.

4. The automated welding production line for the negative electrode explosion-proof valve according to claim 3 is characterized by: The bottom of the negative electrode cover is provided with an eccentrically arranged positioning groove. The cover plate conveying groove is provided with a positioning guide column matched with the positioning groove.

5. The automated welding production line for the negative electrode explosion-proof valve according to claim 2 is characterized in that: The transfer loading mechanism includes a transfer carrier with transfer displacement, and the position detection part located on the transfer carrier path. The transfer carrier is provided with the negative cover plate position adjustment part, and the negative cover plate position adjustment part is a cover plate negative pressure adsorption end with rotational displacement.

6. The automated welding production line for the negative electrode explosion-proof valve according to claim 5, characterized in that: The negative electrode cover plate position adjustment part is a negative pressure pick-up and loading end with a rotationally adjustable displacement and arranged on the transfer carrier.

7. The automated welding production line for the negative electrode explosion-proof valve according to claim 1 is characterized in that: The explosion-proof valve supply device includes an explosion-proof valve conveyor belt, a flexible vibration disk arranged at the discharge end of the explosion-proof valve conveyor belt, an explosion-proof valve visual guidance mechanism arranged on the top of the flexible vibration disk, an explosion-proof valve conveying circulation line for outputting explosion-proof valves, and a turnover transport mechanism for circulating the explosion-proof valves between the flexible vibration disk and the explosion-proof valve conveying circulation line, wherein the turnover transport mechanism is communicatively connected with the explosion-proof valve visual guidance mechanism.

8. The automated welding production line for the negative electrode explosion-proof valve according to claim 7, characterized in that: The explosion-proof valve conveying circulation line includes a circulation belt and a plurality of linearly distributed explosion-proof valve carriers arranged on the circulation belt. The explosion-proof valve conveying circulation line is provided with at least one explosion-proof valve flipping mechanism that is relatively matched with the explosion-proof valve carrier. The explosion-proof valve flipping mechanism includes a flipping carrying arm with flipping displacement and a flipping carrying slot arranged on the flipping carrying arm. A negative pressure locking end is arranged in the flipping carrying slot. The turnover transport mechanism includes an explosion-proof valve negative pressure pickup end, and the explosion-proof valve negative pressure pickup end has a turnover displacement between the turnover loading slot and the flexible vibration disk and between the explosion-proof valve carrier and the flexible vibration disk.

9. The automated welding production line for negative electrode explosion-proof valves according to claim 7, characterized in that: The explosion-proof valve transfer assembly mechanism includes a transfer carrier with a transfer displacement and an explosion-proof valve transfer negative pressure picking end arranged on the transfer carrier.

10. The automated welding production line for negative electrode explosion-proof valves according to claim 7, characterized in that: The good product unloading line comprises a good product unloading circulating belt and a plurality of linearly distributed good product carriers arranged on the good product unloading circulating belt; a good product tray collecting device is provided at the discharge end of the good product unloading line.

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