Pole net welding device

Abstract

The application discloses a bipolar plate welding device, which comprises a frame, locking mechanisms and a rotating mechanism. The locking mechanisms are arranged on opposite sides of the frame. The locking mechanisms are arranged oppositely to form a space for placing the bipolar plate. The locking mechanisms are provided with locking assemblies corresponding to the lugs on the two sides of the bipolar plate. The rotating mechanism is connected with at least one locking mechanism to drive the locking mechanism to rotate and further drive the locked bipolar plate to rotate synchronously. The bipolar plate is only needed to be vertically hoisted and locked, which shortens the falling distance of the workpiece, saves the step of turning over and placing flat, and quickly completes positioning. The traditional posture of the operator bending over to weld is changed, the operator can sit on the two sides of the device to weld the vertically placed bipolar plate, the labor intensity is reduced, and the welding efficiency of the bipolar plate of the low-voltage alkaline electrolytic cell is improved.

Description

Technical Field

[0001] This application relates to the field of electrode welding technology, and in particular to an electrode welding apparatus. Background Technology

[0002] In the manufacturing of low-pressure alkaline water electrolysis hydrogen production equipment, the welding of bipolar plates to the anode and cathode meshes is a core process. The welding quality directly affects the airtightness, current efficiency, and service life of the electrolyzer, requiring stringent precision and stability. This step necessitates precise alignment and secure connection between the bipolar plates and the meshes, which is crucial for ensuring the performance of the electrolysis hydrogen production equipment.

[0003] In existing technologies, when welding bipolar plates to electrode grids, the bipolar plates must first be hoisted onto a platform, and operators must bend over to perform welding operations on the surface of the bipolar plates. However, because the bipolar plates need to be hoisted, flipped, and repositioned multiple times during the welding process, it not only increases the auxiliary operation time but also leads to low overall welding efficiency due to repetitive operations. Utility Model Content

[0004] The purpose of this application is to provide an electrode mesh welding device that can improve the welding efficiency of bipolar plate electrode mesh in low-pressure alkaline electrolytic cells.

[0005] This utility model provides an electrode mesh welding device, comprising:

[0006] frame;

[0007] Multiple locking mechanisms are respectively disposed on opposite sides of the frame. A placement space for placing bipolar plates is formed between two oppositely disposed locking mechanisms. Each locking mechanism is provided with a locking component, which is used to correspondingly lock the lugs on both sides of the bipolar plate.

[0008] A rotating mechanism, connected to at least one of the locking mechanisms, is used to drive the locking mechanisms to rotate, thereby causing the locked bipolar plates to rotate synchronously.

[0009] Beneficial effects: This electrode mesh welding device, during the welding of bipolar plates and electrode mesh, vertically hoists the bipolar plates into the placement space formed by the opposing locking mechanisms on both sides of the frame using external equipment. Then, the locking components on each locking mechanism precisely lock the lugs on both sides of the bipolar plates, thus firmly fixing the bipolar plates onto the locking mechanisms. The entire clamping process requires no complex adjustments, laying a stable foundation for subsequent welding operations.

[0010] During the welding process, the rotating mechanism drives the locking mechanism to rotate, which in turn causes the locked bipolar plates to rotate synchronously, eliminating the need for secondary hoisting of the bipolar plates throughout the process. Simultaneously, the device supports simultaneous welding of both sides of the bipolar plates in a vertical position, saving the time-consuming steps of repeated hoisting and flipping in traditional processes. This not only ensures stable welding precision and quality, significantly improving the production efficiency of bipolar plate mesh in low-pressure alkaline electrolytic cells, but also significantly enhances the automation level of the manufacturing process by replacing manual adjustments with mechanical drive.

[0011] Compared to traditional horizontal welding operations, the bipolar plate only needs to be vertically hoisted and locked during installation, which shortens the workpiece's descent distance and eliminates the need for flipping and flattening, allowing for rapid positioning. During removal, there's no need to slowly lift the bipolar plate, reducing wasted effort and waiting time. More importantly, the device changes the traditional bent-over welding posture, allowing operators to sit on either side of the device to weld the vertically positioned bipolar plate, reducing labor intensity and effectively mitigating the safety risks of workpieces falling, being crushed, or colliding during hoisting.

[0012] In one optional embodiment, the locking assembly includes a plurality of spaced-apart limiting plates, with a limiting groove formed between two adjacent limiting plates, and a lug suitable for placing a bipolar plate in the limiting groove.

[0013] Beneficial effects: The limiting groove formed by adjacent limiting plates can be adapted to the size and spacing of the bipolar plate lugs. When the lugs are placed in the limiting groove, the groove can restrict the displacement of the lugs, preventing the bipolar plate from shifting during clamping or rotation. By limiting the lugs of the bipolar plate through the limiting groove, the operator does not need to repeatedly calibrate the position of the bipolar plate, and the reference alignment of the bipolar plate can be quickly achieved. This lays the foundation for the subsequent precise docking and uniform welding of the electrode grid and the bipolar plate, and reduces the problems of incomplete welding and missing welding caused by positioning deviation.

[0014] In one optional embodiment, the end of the limiting plate is provided with a guide plate, a guide groove is formed between two adjacent guide plates, and the guide groove is connected to the limiting groove. Along the direction from the guide groove to the limiting groove, the width of the guide groove gradually narrows.

[0015] Beneficial effects: When clamping bipolar plates, the alignment of the lugs and the limiting grooves often requires precise positioning. If directly aligned with the narrow limiting grooves, even slight deviations can cause jamming or misalignment, necessitating repeated adjustments. Because the limiting plate has a guide plate at its end, the guide groove connects to the limiting groove, and the guide groove's width narrows towards the limiting groove. After the lugs are placed in the guide groove, as the groove width gradually narrows, the lugs automatically correct their displacement under the guidance of the groove wall, ultimately sliding precisely into the limiting groove. This facilitates quick installation of the lugs into the limiting groove, reducing alignment time during lug clamping. Especially in automated production lines, this shortens the positioning and adjustment cycle of the robotic arm, improving the overall work cycle.

[0016] In one optional embodiment, a limiting hole is provided on the limiting plate corresponding to the lug of the bipolar plate;

[0017] When the lug is located in the limiting groove, the lug is fastened to the limiting groove by a fastener passing through the limiting hole.

[0018] Beneficial effects: Bipolar plates are affected by vibration during welding, and centrifugal force is generated during rotation. If the lugs are only limited by the limiting groove, they are prone to loosening or even detaching from the limiting groove. However, the limiting plate has limiting holes corresponding to the lugs. Fasteners passing through the limiting holes can firmly fix the lugs in the limiting groove, completely restricting the movement and rotation of the lugs. This ensures that the bipolar plate maintains a stable posture during welding and rotation, preventing welding misalignment due to loosening.

[0019] In one optional embodiment, the electrode welding device further includes two moving mechanisms, which are respectively located on opposite sides of the frame and connected to the locking mechanism on the same side, for driving the locking mechanisms on both sides to move synchronously along the height direction of the frame.

[0020] Beneficial effects: During welding operations, the height requirements of the bipolar plates vary depending on the height of the operator or the location of the weld. Two moving mechanisms drive the locking mechanisms on both sides to move synchronously along the frame height, thereby adjusting the height of the bipolar plates. The plates can be lowered to a convenient loading position or raised to a comfortable welding height for the operator, eliminating the need for manual adjustment or bending over, thus facilitating bipolar plate welding.

[0021] In one alternative implementation, the moving mechanism includes a moving plate and a lead screw assembly;

[0022] The frame is provided with a guide portion that extends along the height direction of the frame. The movable plate is movably disposed on the guide portion. The locking mechanism and the rotating mechanism are both disposed on the movable plate. The lead screw assembly is disposed on the frame and connected to the movable plate.

[0023] Beneficial effects: By driving the lead screw assembly, the movement of the moving plate along the extension direction of the guide can be precisely controlled, thereby accurately adjusting the height of the bipolar plate. The guide can limit the offset direction of the moving plate, allowing it to move smoothly up and down along a fixed trajectory. With the locking and rotating mechanisms mounted on the moving plate, the smooth movement of the moving plate can synchronously and smoothly adjust the height of the bipolar plate without wobbling or offset, preventing misalignment between the bipolar plate and the electrode mesh due to unstable movement, and ensuring subsequent welding accuracy.

[0024] In one alternative implementation, the lead screw assemblies of the two moving mechanisms are connected by a synchronous shaft drive.

[0025] Beneficial effects: By connecting the two lead screw assemblies through the synchronous shaft, the lead screw assemblies on both sides can maintain the same rotation speed and rotation angle, driving the moving plates on both sides to move synchronously along the guide section, ensuring that the bipolar plates are always in a horizontal state, and avoiding loosening of the lugs or misalignment of the electrode grid due to tilting.

[0026] In one optional embodiment, the top of the locking mechanism is provided with a positioning pin, and the movable plate is provided with a first positioning hole corresponding to the positioning pin;

[0027] When the positioning pin is inserted into the first positioning hole, the bipolar plate locked by the locking mechanism is in a vertical state.

[0028] Beneficial effects: By engaging the positioning pin at the top of the locking mechanism with the first positioning hole on the moving plate, the locking mechanism can be directly positioned in a preset position when the positioning pin is inserted into the first positioning hole, thereby quickly bringing the locked bipolar plates into a vertical state. This eliminates the need for operators to repeatedly measure and adjust the bipolar plate angle, significantly shortening the attitude calibration time. Simultaneously, it ensures that the vertical reference of each bipolar plate is consistent, avoiding inconsistent welding quality caused by attitude deviations.

[0029] In one optional embodiment, the frame is further provided with a support platform, and the support platform is provided with a second positioning hole corresponding to the positioning pin;

[0030] When the positioning pin is inserted into the second positioning hole, the locking mechanism is supported on the support platform, and the bipolar plate locked by the locking mechanism is in a horizontal state.

[0031] Beneficial effects: Some welding processes require the bipolar plate to be in a horizontal position. When the locating pin is inserted into the second locating hole of the support platform, the locking mechanism is supported on the support platform, and the bipolar plate is thus in a horizontal position. No additional horizontal fixtures are needed to meet the requirements for horizontal welding. This allows the device to perform both vertical and horizontal welding modes, adapting to more diverse welding scenarios and improving the device's functional versatility.

[0032] In one alternative embodiment, the insertion end of the locating pin is chamfered.

[0033] Beneficial effects: By setting the insertion end of the positioning pin to a chamfer, the inclined surface formed by the chamfer can play a guiding role. Even if there is a slight deviation between the positioning pin and the first or second positioning hole, the chamfer can guide the positioning pin to gradually correct its position and easily slide into the first or second positioning hole without repeated fine-tuning. This greatly reduces the difficulty of operation for operators and is especially suitable for scenarios where bipolar plate posture needs to be changed quickly. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of the electrode mesh welding device in one embodiment provided in this application;

[0036] Figure 2 This is a front view of the bipolar plate in the electrode welding device according to one embodiment provided in this application;

[0037] Figure 3 This is a schematic diagram of the structure of the electrode mesh welding device near the frame in one embodiment provided in this application;

[0038] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle;

[0039] Figure 5 This is a schematic diagram of the locking mechanism and rotating mechanism in an electrode mesh welding device according to one embodiment provided in this application;

[0040] Figure 6 This is a schematic diagram of the locking component in an electrode mesh welding device according to one embodiment provided in this application.

[0041] Explanation of reference numerals in the attached figures:

[0042] 100. Frame; 110. Guide section; 120. Support platform; 121. Second positioning hole;

[0043] 200. Locking mechanism; 210. Locking assembly; 211. Limiting plate; 2111. Limiting hole; 212. Limiting groove; 213. Guide plate; 214. Guide groove; 220. Positioning pin;

[0044] 300, bipolar plate; 310, lug;

[0045] 400. Rotating mechanism;

[0046] 500. Moving mechanism; 510. Moving plate; 511. First positioning hole; 520. Lead screw assembly;

[0047] 600, Synchronous Shaft. Detailed Implementation

[0048] In related technologies, when welding bipolar plates to electrode grids, the bipolar plates must first be hoisted onto a platform, and operators must bend over to perform welding operations on the surface of the bipolar plates. However, because the bipolar plates need to be hoisted, flipped, and repositioned multiple times during the welding process, it not only increases the auxiliary operation time but also leads to low overall welding efficiency due to repetitive operations.

[0049] In the early stages of research and development for this application, to address the issues of low efficiency and high labor intensity in traditional bipolar plate and electrode mesh welding, the team first proposed a basic solution: designing a frame with vertical positioning slots to vertically insert and fix the bipolar plates. This solution allows operators to weld while standing or sitting on either side of the frame without bending over, reducing back fatigue and enabling electrode mesh laying and single-sided welding to be completed at the same workstation. This initially optimized the working experience and verified the feasibility of the vertical welding mode.

[0050] However, this initial solution had significant limitations: bipolar plate welding required covering both sides and the edge welds, while the frame could only be fixed in a single vertical position. When changing the welding angle, the bipolar plates had to be repeatedly hoisted, first lifted out of the slot, transported and flipped, and then re-hoisted and calibrated. This was not only cumbersome and time-consuming, but also prone to deformation due to collisions between the bipolar plates and the slots caused by hoisting swaying, or misalignment of the electrode mesh caused by calibration deviations. It failed to solve the core pain point of multiple hoisting operations, making it difficult to adapt to large-scale production and driving subsequent research and development towards an integrated structure.

[0051] Based on this, the inventors of this application have redesigned the electrode mesh welding device. During the welding of the bipolar plate and the electrode mesh, the bipolar plate is vertically hoisted into the placement space formed by the locking mechanisms on both sides of the frame using external equipment. Then, the locking components on each locking mechanism precisely lock the lugs on both sides of the bipolar plate, thus firmly fixing the bipolar plate to the locking mechanism. The entire clamping process requires no complex adjustments, laying a stable foundation for subsequent welding operations.

[0052] During the welding process, the rotating mechanism drives the locking mechanism to rotate, which in turn causes the locked bipolar plates to rotate synchronously, eliminating the need for secondary hoisting of the bipolar plates throughout the process. Simultaneously, the device supports simultaneous welding of both sides of the bipolar plates in a vertical position, saving the time-consuming steps of repeated hoisting and flipping in traditional processes. This not only ensures stable welding precision and quality, significantly improving the production efficiency of bipolar plate mesh in low-pressure alkaline electrolytic cells, but also significantly enhances the automation level of the manufacturing process by replacing manual adjustments with mechanical drive.

[0053] Compared to traditional horizontal welding operations, the bipolar plate only needs to be vertically hoisted and locked during installation, which shortens the workpiece's descent distance and eliminates the need for flipping and flattening, allowing for rapid positioning. During removal, there's no need to slowly lift the bipolar plate, reducing wasted effort and waiting time. More importantly, the device changes the traditional bent-over welding posture, allowing operators to sit on either side of the device to weld the vertically positioned bipolar plate, reducing labor intensity and effectively mitigating the safety risks of workpieces falling, being crushed, or colliding during hoisting.

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0055] The following is combined Figures 1 to 6 The following describes embodiments of the present invention.

[0056] According to embodiments of the present invention, on the one hand, such as Figures 1 to 6 As shown, an electrode mesh welding device is provided, including a frame 100, a locking mechanism 200 and a rotating mechanism 400.

[0057] Specifically, such as Figures 1 to 3 As shown, multiple locking mechanisms 200 are provided, with each locking mechanism 200 disposed on opposite sides of the frame 100. A placement space is formed between two oppositely disposed locking mechanisms 200 for placing the bipolar plate 300. Each locking mechanism 200 is provided with a locking component 210, which is used to correspondingly lock the lugs 310 on both sides of the bipolar plate 300.

[0058] Specifically, the rotating mechanism 400 is connected to at least one locking mechanism 200, wherein the rotating mechanism 400 is used to drive the locking mechanism 200 to rotate, thereby causing the bipolar plate 300 locked on the locking mechanism 200 to rotate synchronously.

[0059] In this electrode mesh welding device, during the welding of the bipolar plate 300 to the electrode mesh, the bipolar plate 300 is vertically hoisted into the placement space formed by the locking mechanisms 200 on both sides of the frame 100 via an external device. Then, using the locking components 210 on each locking mechanism 200, the lugs 310 on both sides of the bipolar plate 300 are precisely locked in place, thus firmly fixing the bipolar plate 300 onto the locking mechanism 200. The entire clamping process requires no complex adjustments, laying a stable foundation for subsequent welding operations.

[0060] During the welding process, the rotating mechanism 400 drives the locking mechanism 200 to rotate, which in turn causes the locked bipolar plate 300 to rotate synchronously, eliminating the need for secondary hoisting of the bipolar plate 300 throughout the process. Simultaneously, the device supports simultaneous welding of both sides of the bipolar plate 300 in a vertical position, saving the time-consuming steps of repeated hoisting and flipping in traditional processes. This not only ensures stable welding precision and quality, significantly improving the production efficiency of the bipolar plate 300 mesh in the low-pressure alkaline electrolytic cell, but also significantly enhances the automation level of the manufacturing process by replacing manual adjustments with mechanical drive.

[0061] Compared to traditional horizontal welding operations, the bipolar plate 300 only needs to be vertically hoisted and locked during installation, which shortens the workpiece's descent distance and eliminates the need for flipping and flattening, allowing for rapid positioning. When hoisting out, there's no need to slowly lift the bipolar plate 300, reducing wasted effort and waiting time. More importantly, the device changes the traditional bent-over welding posture, allowing operators to sit on either side of the device to weld the vertically positioned bipolar plate 300, reducing labor intensity and effectively avoiding the safety risks of workpieces falling, being crushed, or colliding during hoisting.

[0062] Specifically, the locking assembly 210 can lock the lug 310 of the bipolar plate 300 by fasteners, by snap-fit ​​structure, or by pneumatic / hydraulic driven locking device. In this embodiment, the type of locking assembly 210 is not specifically limited.

[0063] Specifically, the rotating mechanism 400 can be a gear-driven rotating device or a worm gear-driven rotating device. In this embodiment, the type of rotating mechanism 400 is not specifically limited.

[0064] For example, a pneumatic or hydraulic motor is used as the power source, and a worm gear reducer is used to drive the locking mechanism 200 to rotate. The power output by the motor is reduced by the worm gear and converted into a larger torque to drive the locking mechanism 200 to rotate. At the same time, by utilizing the self-locking characteristic of the worm gear, the bipolar plate 300 can be stably stopped at any rotation angle, avoiding angular displacement caused by external forces during the welding process.

[0065] Specifically, when the rotating mechanism 400 drives the locking mechanism 200 to rotate, the rotating mechanism 400 can be driven manually, or it can be driven by electric / pneumatic / hydraulic means. In this embodiment, no specific restrictions are placed on the driving method of the rotating mechanism 400.

[0066] In one embodiment, combined Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, the locking assembly 210 includes multiple limiting plates 211, wherein the multiple limiting plates 211 are spaced apart, and a limiting groove 212 is formed between any two adjacent limiting plates 211, and the lug 310 of the bipolar plate 300 is placed in the limiting groove 212.

[0067] The limiting groove 212 formed by adjacent limiting plates 211 can be adapted to the size and spacing of the lugs 310 of the bipolar plate 300. When the lugs 310 are placed in the limiting groove 212, the limiting groove 212 can restrict the displacement of the lugs 310, preventing the bipolar plate 300 from shifting during clamping or rotation. By limiting the lugs 310 of the bipolar plate 300 through the limiting groove 212, the operator does not need to repeatedly calibrate the position of the bipolar plate 300, and the reference alignment of the bipolar plate 300 can be quickly achieved. This lays the foundation for the subsequent precise docking and uniform welding of the electrode mesh and the bipolar plate 300, and reduces the problems of incomplete welding and missing welding caused by positioning deviation.

[0068] After the bipolar plate 300 is engaged with the limiting groove 212 via the lug 310, the surface of the bipolar plate 300 will maintain a flat and stable posture. At this time, when the electrode mesh is laid on the surface of the bipolar plate 300, it is not easy for it to become misaligned due to the shaking of the bipolar plate 300. At the same time, the fixing of the lug 310 by the limiting groove 212 can indirectly ensure the fit between the bipolar plate 300 and the electrode mesh, avoid the electrode mesh and ribs from being misaligned due to slight displacement of the bipolar plate 300, help improve the connection between the electrode mesh and the bipolar plate 300 during welding, and further ensure the consistency of welding quality.

[0069] Specifically, after the lug 310 is placed into the limiting groove 212, the lug 310 can be fixed in the limiting groove 212 by bolt tightening or pin positioning. In this embodiment of the application, no specific restrictions are placed on the fastening method of the lug 310 in the limiting groove 212.

[0070] For example, if the fit between the lug 310 and the limiting groove 212 is high, such as a transition fit, a pin hole can be opened on the side of the limiting plate 211. After the lug 310 is in place, a cylindrical pin or elastic pin is driven into the pin hole, so that the pin passes through the positioning holes of the limiting plate 211 and the lug 310 at the same time, thereby limiting the axial and radial displacement of the lug 310.

[0071] In one embodiment, such as Figure 6 As shown, a guide plate 213 is installed at the end of the limiting plate 211. A guide groove 214 is formed between any two adjacent guide plates 213, and the guide groove 214 is connected to the limiting groove 212. The width of the guide groove 214 gradually narrows along the direction from the guide groove 214 to the limiting groove 212.

[0072] When clamping the bipolar plate 300, the alignment of the lug 310 with the limiting groove 212 often requires precise alignment. If directly aligned with the narrow limiting groove 212, slight deviations can easily cause jamming or misalignment, requiring repeated adjustments. Because the end of the limiting plate 211 has a guide plate 213, the guide groove 214 connects with the limiting groove 212, and the width of the guide groove 214 narrows towards the limiting groove 212. After the lug 310 is placed in the guide groove 214, as the width of the guide groove 214 gradually narrows, the lug 310 will automatically correct its displacement under the guidance of the groove wall, ultimately sliding precisely into the limiting groove 212. This facilitates the quick installation of the lug 310 into the limiting groove 212, reducing the alignment time during clamping. Especially in automated production lines, this can shorten the positioning and adjustment cycle of the robotic arm and improve the overall work cycle.

[0073] Specifically, the lugs 310 of the bipolar plate 300 are mostly thin-walled structures, and some are made of easily deformable materials such as aluminum alloy and titanium alloy. If they collide directly with or are forcibly inserted into the limiting plate 211 during clamping, the edges of the lugs 310 are easily deformed, the surface is scratched, and it may even affect the sealing of the subsequent electrolytic cell assembly. Since the inlet end of the guide groove 214 formed by the guide plate 213 is usually treated with a rounded corner transition, and the groove width gradually narrows along the direction of the limiting groove 212, the lugs 310 will first enter the guide groove 214 through the smooth wide end during clamping, avoiding direct contact with sharp edges. When sliding along the gradually narrowing groove wall, the lugs 310 are in surface contact with the groove wall and the force is gradually evenly distributed, rather than suddenly impacting and causing local stress concentration. This effectively prevents the lugs 310 from deforming or being damaged due to uneven clamping force, protects the structural integrity of the bipolar plate 300, reduces the scrap rate caused by workpiece damage, and reduces production cost losses.

[0074] In one embodiment, such as Figure 6 As shown, a limiting hole 2111 is provided on the limiting plate 211. The limiting hole 2111 is correspondingly provided with the lug 310 of the bipolar plate 300. When the lug 310 is placed in the limiting groove 212, the lug 310 is fastened in the limiting groove 212 by fasteners passing through the limiting hole 2111.

[0075] During the welding of the bipolar plate 300, it is affected by vibration, and centrifugal force is generated during rotation. If the lug 310 is only limited by the limiting groove 212, it is easy to loosen or the lug 310 may fall out of the limiting groove 212. The limiting plate 211 has a limiting hole 2111 corresponding to the lug 310. The fastener passes through the limiting hole 2111 and can firmly fix the lug 310 in the limiting groove 212, which completely restricts the movement and rotation of the lug 310, so that the bipolar plate 300 always maintains a stable posture during welding and rotation, and avoids welding misalignment due to loosening.

[0076] Furthermore, by passing the fastener through the limiting hole 2111, the tightening force can be flexibly adjusted according to the thickness of the lug 310. For thick lugs 310, tighten the fastener more to ensure clamping force, while for thin lugs 310, control the force to prevent deformation. This method can adapt to the tightening needs of lugs 310 of various specifications.

[0077] Furthermore, the lug 310 is secured to the fastener via the limiting hole 2111, eliminating the need for complex power systems such as pneumatics or hydraulics, resulting in fewer parts and lower costs. Routine maintenance only requires checking for wear on the fasteners; replacement is simple and inexpensive, and no dedicated power equipment is needed, reducing both initial investment and ongoing maintenance costs.

[0078] Specifically, one or more limiting holes 2111 can be provided. In this embodiment of the application, the number of limiting holes 2111 is not specifically limited.

[0079] For example, such as Figure 6 As shown, there are multiple limiting holes 2111, and the multiple limiting holes 2111 are spaced apart along the length direction of the limiting plate 211.

[0080] Specifically, the limiting plate 211 and the guide plate 213 can be integrally formed. For example, the end of the limiting plate 211 can be bent to form the guide plate 213.

[0081] In one embodiment, such as Figures 1 to 3 As shown, the electrode welding device also includes two moving mechanisms 500, which are respectively located on opposite sides of the frame 100, and the two moving mechanisms 500 are respectively connected to the locking mechanism 200 on the same side, for driving the locking mechanisms 200 on both sides to move synchronously along the height direction of the frame 100.

[0082] During welding operations, the height requirements for the bipolar plate 300 vary depending on the height of the operator or the location of the welding operation. Two moving mechanisms 500 can drive the locking mechanisms 200 on both sides to move synchronously along the height of the frame 100, thereby adjusting the height of the bipolar plate 300. The bipolar plate 300 can be lowered to a convenient loading position or raised to a comfortable welding height for the operator, eliminating the need for manual adjustment or bending over, thus facilitating welding of the bipolar plate 300.

[0083] In addition, the rotating mechanism 400 drives the bipolar plate 300 to rotate for welding different surfaces, while the moving mechanism 500 can adjust the height accordingly. For example, when welding the top or bottom of the bipolar plate 300, the moving mechanism 500 can finely adjust the height to ensure that the part to be welded is within the optimal working range of the operator or welding equipment, avoiding incomplete welding due to unsuitable height and ensuring precise welding of all parts of the bipolar plate 300.

[0084] In practical applications, bipolar plates 300 of different specifications have varying heights. If the device height is fixed, it may not be able to accommodate bipolar plates 300 that are too short or too tall. The moving mechanism 500 drives the locking mechanism 200 to move along the height direction, which can adjust the placement position according to the actual height of the bipolar plate 300. This ensures that bipolar plates 300 of different sizes can be stably fixed and placed in a suitable welding range, eliminating the need to change special tooling and improving the device's adaptability to workpieces of various specifications.

[0085] In one embodiment, such as Figure 3 As shown, the moving mechanism 500 includes a moving plate 510 and a lead screw assembly 520. A guide portion 110 is provided on the frame 100, extending along the height direction of the frame 100. The moving plate 510 is movably mounted on the guide portion 110. A locking mechanism 200 and a rotating mechanism 400 are both disposed on the moving plate 510. The lead screw assembly 520 is disposed on the frame 100 and connected to the moving plate 510.

[0086] By driving the lead screw assembly 520, the movement of the movable plate 510 along the extension direction of the guide portion 110 can be precisely controlled, thereby accurately adjusting the height of the bipolar plate 300. The guide portion 110 can limit the offset direction of the movable plate 510, allowing the movable plate 510 to move smoothly up and down along a fixed trajectory. With the locking mechanism 200 and the rotating mechanism 400 mounted on the movable plate 510, the smooth movement of the movable plate 510 can synchronously and smoothly adjust the height of the bipolar plate 300 without wobbling or offset, preventing misalignment between the bipolar plate 300 and the electrode mesh due to unstable movement, and ensuring subsequent welding accuracy.

[0087] Whether it's adjusting the welding height to suit the operator's height or adapting to the placement requirements of different sized bipolar plates 300, precise positioning can be achieved through the lead screw assembly 520, avoiding height adjustment deviations from affecting welding operations or workpiece fixation.

[0088] In one embodiment, such as Figure 1 and Figure 3 As shown, the lead screw assemblies 520 of the two moving mechanisms 500 are connected by a synchronous shaft 600.

[0089] The two lead screw assemblies 520 are connected by a synchronous shaft 600, which allows the lead screw assemblies 520 on both sides to maintain the same rotation speed and rotation angle, and drive the moving plates 510 on both sides to move synchronously along the guide part 110, ensuring that the bipolar plate 300 is always in a horizontal state, and avoiding the lug 310 from loosening or the polar mesh from misalignment due to tilting.

[0090] There is no need to set up complex synchronization control systems (such as additional sensors and controllers) for the two lead screw assemblies 520. Synchronization can be achieved solely through the mechanical transmission of the synchronization shaft 600, reducing the complexity of electrical control. During operation, only one power source needs to be driven to operate the two lead screw assemblies 520 via the synchronization shaft 600, which reduces the difficulty of equipment control and also reduces synchronization problems caused by control system failures.

[0091] Specifically, if the two lead screw assemblies 520 are driven independently, the moving plate 510 may not rise and fall synchronously due to differences in motor speed and wear of components, which in turn will cause the two sides of the bipolar plate 300 to be at different heights and tilt.

[0092] Specifically, the synchronous shaft 600 transmission allows for more even force distribution on the two moving mechanisms 500, preventing jamming or component damage to the moving plate 510 on one side due to excessive force. Simultaneously, during synchronous lifting and lowering, the bipolar plate 300 will not experience additional pulling force due to speed differences on both sides, protecting the bipolar plate 300 lugs 310 and the locking mechanism 200, reducing the probability of workpiece damage and mechanism failure, and extending the equipment's service life.

[0093] In one embodiment, such as Figure 5 As shown, the top of the locking mechanism 200 is provided with a positioning pin 220, and the moving plate 510 is provided with a first positioning hole 511, which is correspondingly provided with the positioning pin 220. When the positioning pin 220 is inserted into the first positioning hole 511, the bipolar plate 300 locked by the locking mechanism 200 is in a vertical state.

[0094] By engaging the positioning pin 220 on the top of the locking mechanism 200 with the first positioning hole 511 on the moving plate 510, when the positioning pin 220 is inserted into the first positioning hole 511, the locking mechanism 200 can be directly positioned in a preset position, thereby allowing the bipolar plate 300 locked by it to quickly be in a vertical state. This eliminates the need for operators to repeatedly measure and adjust the angle of the bipolar plate 300, significantly shortening the attitude calibration time, while ensuring that the vertical reference of each bipolar plate 300 is consistent, avoiding inconsistent welding quality caused by attitude deviations.

[0095] During the welding process, the bipolar plate 300 may experience posture deviation due to vibration and the force of the rotating mechanism 400. The engagement structure between the positioning pin 220 and the first positioning hole 511 provides additional restraint to the locking mechanism 200, limiting its horizontal swaying or angular deviation. This ensures that the bipolar plate 300 remains stably vertical throughout the entire process, including welding, rotation, and lifting, providing continuous and stable posture assurance for precise welding.

[0096] In one embodiment, such as Figure 3 and Figure 4As shown, the frame 100 is also provided with a support platform 120, wherein the support platform 120 is provided with a second positioning hole 121, which is correspondingly provided with a positioning pin 220. When the positioning pin 220 is inserted into the second positioning hole 121, the locking mechanism 200 is supported on the support platform 120, and the bipolar plate 300 locked by the locking mechanism 200 is in a horizontal state.

[0097] Some welding processes (such as welding at specific weld locations and pre-positioning welding of the electrode grid) require the bipolar plate 300 to be in a horizontal state. When the positioning pin 220 is inserted into the second positioning hole 121 of the support platform 120, the locking mechanism 200 is supported on the support platform 120, and the bipolar plate 300 is thus in a horizontal state. This eliminates the need for additional horizontal fixtures, meeting the requirements for horizontal welding. This allows the device to perform both vertical and horizontal welding, adapting to more diverse welding scenarios and improving the device's functional versatility.

[0098] When switching the bipolar plate 300 between horizontal and vertical states, it is only necessary to adjust the locking mechanism 200 by rotating the rotating mechanism 400, so that the positioning pin 220 can switch and engage between the first positioning hole 511 (vertical) and the second positioning hole 121 (horizontal). The entire posture switching process does not require complicated operations, which greatly shortens the adjustment time between different welding postures, reduces the time spent on auxiliary operations, and improves the overall welding operation efficiency.

[0099] In one embodiment, the insertion end of the locating pin 220 is chamfered.

[0100] The insertion end of the positioning pin 220 is set with a chamfer. The inclined surface formed by the chamfer can play a guiding role. Even if there is a slight deviation between the positioning pin 220 and the first positioning hole 511 or the second positioning hole 121, the chamfer can guide the positioning pin 220 to gradually correct its position and easily slide into the first positioning hole 511 or the second positioning hole 121. There is no need to repeatedly fine-tune the alignment, which greatly reduces the difficulty of operation for operators. It is especially suitable for scenarios where the bipolar plate 300 posture (vertical / horizontal) is quickly switched.

[0101] If the insertion end of the locating pin 220 lacks a chamfer, during alignment deviations, the right-angled edge of the locating pin 220 will directly and forcefully collide with the opening of the locating hole. Over time, this can easily lead to wear and deformation of both edges (such as chipping at the end of the locating pin 220), affecting subsequent positioning accuracy. A chamfer reduces the impact force at the moment of insertion of the locating pin 220, protecting the structural integrity of the locating pin 220 and the locating hole, extending the service life of the component, and avoiding frequent replacements due to wear.

[0102] Specifically, the chamfer can be a beveled chamfer or a rounded chamfer. In this embodiment, the shape of the chamfer is not specifically limited.

[0103] The terms "upper" and "lower" are used to describe the relative positions of the various structures in the accompanying drawings. They are only for clarity of description and are not intended to limit the scope of implementation of this application. Any changes or adjustments to the relative positions without substantially altering the technical content shall also be considered within the scope of implementation of this application.

[0104] It should be noted that, in this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0105] Furthermore, in this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0106] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electrode mesh welding device, characterized in that, include: Rack (100); Multiple locking mechanisms (200) are respectively disposed on opposite sides of the frame (100). A placement space for placing bipolar plates (300) is formed between two oppositely disposed locking mechanisms (200). Each locking mechanism (200) is provided with a locking component (210), which is used to correspondingly lock the lugs (310) on both sides of the bipolar plate (300). A rotating mechanism (400) is connected to at least one of the locking mechanisms (200) for driving the locking mechanism (200) to rotate, thereby causing the locked bipolar plate (300) to rotate synchronously.

2. The electrode mesh welding apparatus according to claim 1, characterized in that, The locking assembly (210) includes a plurality of spaced limiting plates (211), and a limiting groove (212) is formed between two adjacent limiting plates (211). The limiting groove (212) is suitable for placing the lug (310) of the bipolar plate (300).

3. The electrode mesh welding device according to claim 2, characterized in that, The end of the limiting plate (211) is provided with a guide plate (213), and a guide groove (214) is formed between two adjacent guide plates (213). The guide groove (214) is connected to the limiting groove (212). Along the direction from the guide groove (214) to the limiting groove (212), the width of the guide groove (214) gradually narrows.

4. The electrode mesh welding apparatus according to claim 3, characterized in that, The limiting plate (211) has a limiting hole (2111) on the lug (310) corresponding to the bipolar plate (300); When the lug (310) is located in the limiting groove (212), the lug (310) is fastened to the limiting groove (212) by a fastener passing through the limiting hole (2111).

5. The electrode mesh welding apparatus according to any one of claims 1 to 4, characterized in that, The electrode welding device further includes two moving mechanisms (500), which are respectively located on opposite sides of the frame (100), and the two moving mechanisms (500) are respectively connected to the locking mechanism (200) on the same side, for driving the locking mechanisms (200) on both sides to move synchronously along the height direction of the frame (100).

6. The electrode mesh welding apparatus according to claim 5, characterized in that, The moving mechanism (500) includes a moving plate (510) and a lead screw assembly (520); The frame (100) is provided with a guide part (110) which extends along the height direction of the frame (100). The movable plate (510) is movably disposed on the guide part (110). The locking mechanism (200) and the rotating mechanism (400) are both disposed on the movable plate (510). The lead screw assembly (520) is disposed on the frame (100) and connected to the movable plate (510).

7. The electrode mesh welding apparatus according to claim 6, characterized in that, The lead screw assemblies (520) of the two moving mechanisms (500) are connected by a synchronous shaft (600).

8. The electrode mesh welding apparatus according to claim 6, characterized in that, The locking mechanism (200) is provided with a positioning pin (220) at the top, and the moving plate (510) is provided with a first positioning hole (511) corresponding to the positioning pin (220); When the positioning pin (220) is inserted into the first positioning hole (511), the bipolar plate (300) locked by the locking mechanism (200) is in a vertical state.

9. The electrode mesh welding apparatus according to claim 8, characterized in that, The frame (100) is also provided with a support platform (120), and the support platform (120) is provided with a second positioning hole (121) corresponding to the positioning pin (220); When the positioning pin (220) is inserted into the second positioning hole (121), the locking mechanism (200) is supported on the support platform (120), and the bipolar plate (300) locked by the locking mechanism (200) is in a horizontal state.

10. The electrode mesh welding apparatus according to claim 8, characterized in that, The insertion end of the positioning pin (220) is chamfered.

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