A nickel push-pull net welding device and welding method

Abstract

The application provides a nickel punching and drawing net welding device and a welding method, and the welding method comprises the following steps: sequentially performing punching, edge cutting and edge pressing treatment on a first nickel plate and a second nickel plate respectively to form a first nickel punching and drawing net and a second nickel punching and drawing net with welding edges and mounting edges; laying the two on the same plane and aligning the welding edges; laying a long strip-shaped nickel net on the butt joint welding edges, so that the long strip-shaped nickel net extends along the butt joint length direction and the two ends in the width direction are overlapped on the two welding edges respectively; and applying pressure and voltage on the overlapping part, so that the two ends of the long strip-shaped nickel net are welded to the welding edges of the first and second nickel punching and drawing nets respectively, and the splicing is completed. By adopting the long strip-shaped nickel net as an intermediate connecting piece for resistance welding, the good deformation capacity of the nickel net is utilized to effectively compensate the irregular deformation caused by thermal expansion and cold contraction in the welding process, the warping deformation of the nickel punching and drawing net is avoided, and the flatness of the net surface after welding is ensured.

Description

Technical Field

[0001] This invention relates to the field of electrolytic hydrogen equipment technology, specifically to a nickel punched mesh welding device and welding method. Background Technology

[0002] Currently, most hydrogen production via water electrolysis is alkaline. Alkaline electrolyzers mainly consist of a cathode, anode, diaphragm, bipolar plates, diffusion layer, and gaskets. The diffusion layer primarily uses nickel-stamped mesh and elastic mesh, with nickel-stamped mesh being widely used due to its high rigidity and stability. The most mature alkaline electrolyzer product is a circular cell with a capacity of 1000 Nm³ / h, and the diffusion layer size reaches a diameter of 1655~1920 mm or even larger. Due to limitations in equipment and production costs associated with wide nickel plates, a process flow of "nickel plate - stamping mesh - cutting into circles - pressing edges - welding" or "nickel plate - stamping mesh - pressing edges - welding - cutting into circles" is generally used, resulting in 4- or 5-panel designs.

[0003] There are three existing splicing and welding methods. The first method involves overlapping one piece of nickel-plated wire mesh onto the edge of another and welding it. This method can result in unevenness due to local warping, which does not meet the requirements. The second method involves simultaneously overlapping long strips of nickel plates onto the edges of two adjacent pieces of nickel-plated wire mesh and then welding them using resistance welding. This method is also prone to local warping, resulting in uneven spliced ​​nickel-plated wire mesh that does not meet the requirements. The third method involves simultaneously overlapping long strips of nickel plates onto the edges of two adjacent pieces of nickel-plated wire mesh and then spot welding them using resistance welding. While this method overcomes the problem of local deformation, it requires a large number of weld points and has low welding efficiency.

[0004] In summary, there is an urgent need for a nickel stamping mesh welding device and welding method to solve or at least partially solve the problems existing in the prior art. Summary of the Invention

[0005] The purpose of this invention is to provide a method for welding nickel stamped wire mesh, aiming to solve the problem that existing equipment easily leads to warping and deformation of the welded nickel stamped wire mesh. The specific technical solution is as follows: A method for welding nickel stamped wire mesh includes the following steps: S1. The first nickel plate and the second nickel plate are punched, trimmed and pressed in sequence. After pressing, welding edges and mounting edges are formed around the first nickel plate and the second nickel plate to obtain the first nickel punched mesh and the second nickel punched mesh. S2. Lay the first nickel stamped mesh and the second nickel stamped mesh flat on the same plane, and keep the welded edges of the first nickel stamped mesh and the second nickel stamped mesh in the same plane, with their edges touching and aligned. S3. A long strip of nickel mesh is laid flat on the welding edge where the first nickel stamped mesh and the second nickel stamped mesh meet. The long strip of nickel mesh extends along the length direction of the connection between the first nickel stamped mesh and the second nickel stamped mesh, and both ends of the long strip of nickel mesh overlap the welding edge of the first nickel stamped mesh and the welding edge of the second nickel stamped mesh along the width direction. S4. Apply pressure and voltage to the overlapping parts of the first nickel-plated wire mesh and the long strip nickel mesh, and to the overlapping parts of the second nickel-plated wire mesh and the long strip nickel mesh, so that the two ends of the long strip nickel mesh in the width direction are respectively welded to the first nickel-plated wire mesh and the second nickel-plated wire mesh, and splice the first nickel-plated wire mesh and the second nickel-plated wire mesh.

[0006] Preferably, in S1, when trimming the first and second nickel-plated wire mesh, the sides of the first and second nickel-plated wire mesh are trimmed and pressed to form welding edges; the ends of the first and second nickel-plated wire mesh are trimmed and pressed to form mounting edges.

[0007] Preferably, in step S3, before laying out the long strip nickel mesh, a nickel mesh is woven using metallic nickel wire, and the woven nickel mesh is cut into long strip nickel meshes.

[0008] Preferably, in step S4, a first electrode is disposed below the welding edges of the first and second nickel-plated meshes, and a second electrode is disposed above the elongated nickel mesh. The second electrode is positioned close to the first electrode, and pressure is applied to the elongated nickel mesh by the second electrode. A voltage is applied to the first and second electrodes to create a voltage difference between them. Current flows from the first electrode through the elongated nickel mesh and from either the first or second nickel-plated mesh to the second electrode. The thermal effect of the current welds both ends of the elongated nickel mesh in its width direction to the welding edges of the first and second nickel-plated meshes, respectively. Alternatively, current flows from the second electrode through the first or second nickel-plated mesh and then through the elongated nickel mesh to the first electrode. The thermal effect of the current welds both ends of the elongated nickel mesh to the welding edges of the first and second nickel-plated meshes, respectively.

[0009] Preferably, the first electrode is a long, straight conductive strip, which is used to form a straight and stable support for the first nickel stamped mesh, the second nickel stamped mesh, and the long strip nickel mesh; the second electrode is a disc-shaped conductive disk, which is used to roll along the length of the first electrode to continuously roll and weld the first nickel stamped mesh, the second nickel stamped mesh, and the long strip nickel mesh.

[0010] On the other hand, this application also provides a nickel stamped wire mesh welding device, which uses the above-mentioned nickel stamped wire mesh welding method for welding construction; the specific structure includes a frame, a first electrode, a second electrode and a driving mechanism, the top of the frame is provided with a supporting plane, the first electrode is fixedly connected to the supporting plane, the driving mechanism is moved and connected to the frame along a first direction; the second electrode is installed on the driving mechanism, and the second electrode is moved and arranged on the driving mechanism along a second direction; the first direction and the second direction are arranged intersectingly; the second electrode is a welding disc, the welding disc is rotatably connected to the driving mechanism, and the welding disc is rolled along the second direction; a welding space is provided between the first electrode and the second electrode, the driving mechanism drives the second electrode to move toward the first electrode, and rolls along the second direction to perform roll welding.

[0011] Preferably, the drive mechanism includes a slide rail, a slide block, a gantry frame, and a welding frame. Two slide rails are provided, and the two slide rails are arranged parallel to each other on both sides of the frame. Two slide blocks are arranged corresponding to the slide rails, and the two slide blocks are slidably connected to the two slide rails respectively. The two ends of the gantry frame are respectively mounted on the two slide blocks. The welding frame is slidably installed on the gantry frame along a second direction, and the welding disc is rotatably installed on the welding frame. The welding frame is arranged to move up and down along the height direction.

[0012] Preferably, it further includes a clamping mechanism, which includes a clamping seat and a telescopic member mounted on the clamping seat. The clamping seat is slidably connected to the gantry along the second direction, and the telescopic member is mounted on the lower end of the clamping seat and extends downward along the height direction.

[0013] Preferably, two clamping mechanisms are arranged, one on each side of the roll welding frame.

[0014] Preferably, the first electrode is a conductive copper plate, which is laid flat on the top of the frame along the second direction; multiple first electrodes are arranged, and the multiple first electrodes are arranged at intervals along the first direction.

[0015] The application of the technical solution of the present invention has the following beneficial effects: Through the above improvements, a long strip of nickel mesh is used to connect and weld two adjacent nickel stamped meshes. The long strip of nickel mesh is laid flat on both sides of the adjacent first and second nickel stamped meshes. During welding, the long strip of nickel mesh is welded to the pressing edges of the first and second nickel stamped meshes. During welding, irregular deformation will still occur due to thermal expansion and contraction. However, when this deformation acts on the long strip of nickel mesh, it will cause the long strip of nickel mesh to deform. The mesh-like long strip of nickel mesh naturally has good deformation performance. That is, after welding, the long strip of nickel mesh deforms to compensate for the irregular deformation caused by thermal expansion and contraction during welding, preventing the first or second nickel stamped mesh from being deformed by thermal expansion and contraction during welding. This ensures that the first and second nickel stamped meshes remain flat after welding.

[0016] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a flowchart of a nickel stamped wire mesh welding method according to this application; Figure 2 This is a schematic diagram of the overall structure of a nickel punched wire mesh welding device according to this application.

[0018] Among them, 1. frame; 11. supporting plane; 2. first electrode; 3. second electrode; 4. drive mechanism; 41. slide rail; 42. slide seat; 43. gantry frame; 44. roll welding frame; 5. clamping mechanism; 51. clamping seat; 52. telescopic component. Detailed Implementation

[0019] To facilitate understanding of the present invention, a more comprehensive description is provided below, along with preferred embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0021] Example 1: It should be noted that the production of nickel sheet into nickel punched mesh is limited by the production equipment. For example, when punching strip nickel sheet into nickel punched mesh, the width of the punching machine is generally within 1.5 meters. If you want to produce nickel punched mesh with a diameter of 2 meters, you need to use two punched nickel punched meshes to weld and splice them together.

[0022] See Figure 1 This embodiment provides a method for welding nickel stamped wire mesh, including the following steps: S1. The first nickel plate and the second nickel plate are punched, trimmed and pressed in sequence. After pressing, welding edges and mounting edges are formed around the first nickel plate and the second nickel plate to obtain the first nickel punched mesh and the second nickel punched mesh. Specifically, a steel plate mesh punching machine is used to punch mesh into the strip-shaped first and second nickel plates, creating mesh holes. Then, the first and second nickel plates with the punched mesh holes are cut, welding edges are cut from the sides of the first and second nickel plates, and installation edges are cut from both ends of the first and second nickel plates. An edge pressing machine is then used to press the welding edges and installation edges flat to facilitate subsequent welding and installation.

[0023] S2. Lay the first nickel stamped mesh and the second nickel stamped mesh flat on the same plane, and keep the welded edges of the first nickel stamped mesh and the second nickel stamped mesh in the same plane, with their edges touching and aligned. By laying the first and second nickel-plated wire meshes flat on the same plane, it is possible to fully flatten both the first and second nickel-plated wire meshes, which facilitates subsequent joining and welding. On the other hand, it is also beneficial for the first and second nickel-plated wire meshes to be spliced ​​and joined together in the same plane.

[0024] S3. A long strip of nickel mesh is laid flat on the welding edge where the first nickel stamped mesh and the second nickel stamped mesh meet. The long strip of nickel mesh extends along the length direction of the connection between the first nickel stamped mesh and the second nickel stamped mesh, and both ends of the long strip of nickel mesh overlap the welding edge of the first nickel stamped mesh and the welding edge of the second nickel stamped mesh along the width direction. Long strips of nickel mesh are overlapped on the first and second nickel punched meshes to connect them.

[0025] S4. Apply pressure and voltage to the overlapping parts of the first nickel-plated wire mesh and the long strip nickel mesh, and to the overlapping parts of the second nickel-plated wire mesh and the long strip nickel mesh, so that the two ends of the long strip nickel mesh in the width direction are respectively welded to the first nickel-plated wire mesh and the second nickel-plated wire mesh, and splice the first nickel-plated wire mesh and the second nickel-plated wire mesh.

[0026] Research has revealed that existing methods of welding nickel-plated wire mesh onto adjacent nickel-plated wire mesh, as well as methods of continuously welding long strip nickel plates onto two adjacent nickel-plated wire mesh, result in thermal expansion during welding and contraction during cooling. Because the nickel-plated wire mesh itself is relatively thin, and the expansion and cooling are uneven, irregular contraction occurs at the edge of the long strip nickel plate and the nickel-plated wire mesh. This causes the nickel-plated wire mesh to deform during cooling, ultimately resulting in irregular warping deformation of both nickel-plated wire meshes after welding. Through the above improvements, a long strip of nickel mesh is used to connect and weld two adjacent nickel stamped meshes. The long strip of nickel mesh is laid flat on both sides of the adjacent first and second nickel stamped meshes. During welding, the long strip of nickel mesh is welded to the pressing edges of the first and second nickel stamped meshes. During welding, irregular deformation will still occur due to thermal expansion and contraction. However, when this deformation acts on the long strip of nickel mesh, it will cause the long strip of nickel mesh to deform. The mesh-like long strip of nickel mesh naturally has good deformation performance. That is, after welding, the long strip of nickel mesh deforms to compensate for the irregular deformation caused by thermal expansion and contraction during welding, preventing the first or second nickel stamped mesh from being deformed by thermal expansion and contraction during welding. This ensures that the first and second nickel stamped meshes remain flat after welding.

[0027] Specifically, in S1, when trimming the first and second nickel-plated mesh, a steel plate mesh punching machine is used to cut the sides of the first and second nickel-plated mesh and press the edges to form welding edges; the ends of the first and second nickel-plated mesh are cut and pressed to form installation edges.

[0028] The welding edge is a straight line, which facilitates the butt joint of the first and second nickel stamped meshes. The mounting edge is an arc shape, and after the first and second nickel stamped meshes are butt-welded together, the arcs of the first and second nickel stamped meshes are concentrically arranged, and their arcs are flush at the butt joint position. By setting the mounting edge to an arc shape, it is convenient to install the welded first and second nickel stamped meshes onto the corresponding alkaline electrolytic cells.

[0029] In a preferred embodiment, in step S3, before laying the elongated nickel mesh, a nickel mesh is woven using nickel wire, and the woven nickel mesh is cut into elongated nickel mesh using a cutting device. The width of the elongated nickel mesh is slightly narrower than the sum of the widths of the welded edges of the first and second nickel-stamped meshes, so that the elongated nickel mesh can be laid flat on the welded edges of the first and second nickel-stamped meshes.

[0030] It is known that woven nickel mesh made of metallic nickel wire has good deformation ability, so that after the long strip nickel mesh is welded to the first nickel punched mesh and the second nickel punched mesh, the long strip nickel mesh can spontaneously deform, thereby compensating for the deformation caused by welding and preventing the first nickel punched mesh and the second nickel punched mesh from warping and deforming after welding.

[0031] In a preferred embodiment, in step S4, a first electrode is provided below the welding edge of the first and second nickel stamped meshes, and a second electrode is provided above the elongated nickel mesh. The second electrode moves toward the first electrode and applies pressure to the elongated nickel mesh. A voltage is applied to the first electrode and the second electrode to create a voltage difference between the first electrode and the second electrode. Current flows from the first electrode through the long strip nickel mesh and from the first nickel stamped mesh or the second nickel stamped mesh to the second electrode. The thermal effect of the current welds the two ends of the long strip nickel mesh in the width direction to the welding edge of the first nickel stamped mesh and the welding edge of the second nickel stamped mesh, respectively. Alternatively, current flows from the second electrode through the first or second nickel stamped mesh, and then through the long strip nickel mesh to the second electrode. The thermal effect of the current welds the two ends of the long strip nickel mesh to the welding edges of the first and second nickel stamped mesh, respectively.

[0032] It is known that pressure is applied to the long strip nickel mesh and electricity is passed through it. It is important to note that the current should be sufficient to melt the contact points between the long strip nickel mesh and the first nickel stamped mesh, as well as between the long strip nickel mesh and the second nickel stamped mesh. After the pressure is applied, the welded edges of the long strip nickel mesh and the first nickel stamped mesh, as well as the welded edges of the long strip nickel mesh and the second nickel stamped mesh, fuse together, thus achieving the welding of the long strip nickel mesh to the first and second nickel stamped meshes.

[0033] In a preferred embodiment, the first electrode is a long, straight conductive strip. The straight first electrode is used to form a straight and stable support for the first nickel stamped mesh, the second nickel stamped mesh, and the long strip nickel mesh. The second electrode is a disc-shaped conductive disk. The disc-shaped second electrode is used to roll along the length of the first electrode to continuously roll and weld the first nickel stamped mesh, the second nickel stamped mesh, and the long strip nickel mesh.

[0034] It is understood that by arranging the first electrode as a long and straight conductive strip, the welding edges of the first and second nickel-plated mesh can be completely and smoothly laid on the first electrode, preventing bending or warping deformation of the first and second nickel-plated mesh during welding. This facilitates subsequent welding operations and is beneficial for preventing welding deformation. During welding, the conductive plate is pressed against the long nickel mesh, and a voltage is applied, creating a voltage difference between the first and second electrodes. This voltage difference generates current, which flows from the conductive plate... The current flows through the elongated nickel mesh and along the welding edges of either the first or second nickel-plated mesh to the second electrode. As the current flows through the elongated nickel mesh, the welding edges of the first and second nickel-plated meshes, the thermal effect melts the contact points between the elongated nickel mesh and the first and second nickel-plated meshes. Under pressure, the elongated nickel mesh is welded to both the first and second nickel-plated meshes, thus achieving welding. Simultaneously, by setting the second electrode as a conductive disc, during welding, the conductive disc rolls along the length of the first electrode, i.e., along the length of the guide strip, achieving continuous and uninterrupted welding. This not only greatly improves welding efficiency but also provides a better connection effect compared to single-point welding, helping to prevent the elongated nickel mesh from detaching.

[0035] Example 2: See appendix Figure 2 This embodiment provides a nickel stamped wire mesh welding device, which uses the nickel stamped wire mesh welding method described in Embodiment 1 above for welding construction. The specific structure includes a frame 1, a first electrode 2, a second electrode 3, and a driving mechanism 4. The top of the frame 1 has a supporting plane 11. The first electrode 2 is fixedly connected to the supporting plane 11, and the driving mechanism 4 is movable and connected to the frame 1 along a first direction. The second electrode 3 is mounted on the driving mechanism 4 and is arranged on the driving mechanism 4 along a second direction. The first and second directions are arranged intersectingly. In this embodiment, the first and second directions are perpendicular to each other. Of course, in some other embodiments of this application, the first and second directions can also be arranged at an acute angle, as long as the first and second directions are not parallel. The second electrode 3 is a welding disc, which is rotatably connected to the driving mechanism 4 and is arranged rollingly along the second direction. A welding space is provided between the first electrode 2 and the second electrode 3. The driving mechanism 4 drives the second electrode 3 to move towards the first electrode 2 and rolls along the second direction for roll welding. It should be noted that the first direction is along the length of the frame 1, and the second direction is along the width of the frame 1.

[0036] It is understood that when two or more nickel-plated wire meshes need to be welded (in this embodiment, two nickel-plated wire meshes are taken as an example, specifically the first nickel-plated wire mesh and the second nickel-plated wire mesh), the two nickel-plated wire meshes to be welded are placed on the support plane 11 of the frame 1, and the welding edges of the first nickel-plated wire mesh and the second nickel-plated wire mesh are aligned above the first electrode 2. A long strip of nickel mesh is placed above the welding edges of the first nickel-plated wire mesh and the second nickel-plated wire mesh; the second electrode 3 is driven along the first direction by the driving mechanism 4. The first electrode 2 is aligned with the second electrode 3 by moving the first electrode 3. Then, the second electrode 3 is driven by the driving mechanism 4 to press against the elongated nickel mesh, and energization is applied to both electrodes 2 and 3 to weld the elongated nickel mesh onto the first and second nickel-plated meshes. During welding, the driving mechanism 4 drives the second electrode 3 to move along a second direction, i.e., to roll along the elongated nickel mesh, welding continuously while rolling, ultimately achieving the welded splicing of the first and second nickel-plated meshes. Because the elongated nickel mesh has good deformation characteristics, it automatically compensates for the deformation caused by thermal expansion and contraction during welding, ensuring the flatness of both the first and second nickel-plated meshes. It should be noted that the thickness of the elongated nickel mesh is less than the thickness of the welded edges on the first and second nickel-plated meshes.

[0037] The drive mechanism 4 includes a slide rail 41, a slide block 42, a gantry frame 43, and a welding frame 44. Two slide rails 41 are provided, installed parallel to each other on both sides of the frame 1. Two slide blocks 42 are arranged corresponding to the slide rails 41, and are slidably connected to the two slide rails 41 respectively. The two ends of the gantry frame 43 are fixed to the two slide blocks 42 respectively. When the slide blocks 42 slide along the slide rails 41, they drive the gantry frame 43 to move along the length of the slide rails 41. The welding frame 44 is slidably installed on the gantry frame 43 along a second direction, and a welding disc is rotatably installed on the welding frame 44. The welding frame 44 is arranged vertically along the height direction. Specifically, multiple first electrodes 2 are arranged, spaced apart along a first direction. All multiple first electrodes 2 are installed on the frame 1, and the frame 1 and the first electrodes 2 are separated by a non-conductive material (not shown in the attached figure) to prevent leakage.

[0038] It should be noted that the slide block 42 slides along the slide rail 41, causing the gantry frame 43 and the welding roller frame 44 mounted on the gantry frame 43 to move in the first direction, so as to adjust the relative position of the second electrode 3 with respect to the first electrode 2, so that the second electrode 3 is aligned with the first electrode 2 in the first direction. The welding disc is driven to slide in the second direction by the rolling frame, and at the same time, the rolling frame drives the welding disc to extend downward and press against the long strip nickel mesh, so as to perform continuous rolling welding on the long strip nickel mesh by the welding disc of the first electrode 2 and the second electrode 3.

[0039] It also includes a clamping mechanism 5, which includes a clamping seat 51 and a telescopic member 52 mounted on the clamping seat 51. The clamping seat 51 is slidably connected to the gantry frame 43 in the second direction. The telescopic member 52 is mounted on the lower end of the clamping seat 51 and extends downward in the height direction.

[0040] It can be seen that, through the setting of the clamping mechanism 5, during welding, the clamping mechanism 5 clamps both ends of the long strip nickel mesh to prevent the long strip nickel mesh, the first nickel punched mesh, and the second nickel punched mesh from shifting position during welding. At the same time, clamping the long strip nickel mesh, the first nickel punched mesh, and the second nickel punched mesh by the clamping mechanism 5 during welding helps to reduce deformation after welding.

[0041] During operation, the clamping seat 51 is moved along the second direction and adjusted to a position corresponding to one end of the elongated nickel mesh. The telescopic component 52 extends downward and presses against one end of the elongated nickel mesh. A soft rubber pad is provided at the lower end of the telescopic component 52. The soft rubber pad facilitates the pressing of the elongated nickel mesh, the first nickel punched mesh, and the second nickel punched mesh, while preventing the telescopic component 52 from damaging the elongated nickel mesh. The telescopic component 52 is a cylinder or an electric push rod.

[0042] Two clamping mechanisms 5 are arranged, with the two clamping mechanisms 5 respectively arranged on both sides of the roll welding frame 44.

[0043] It is known that during operation, the two clamping mechanisms 5 work simultaneously to clamp and fix the long strip nickel mesh, the first nickel punched mesh, and the second nickel punched mesh to be welded, preventing them from moving during welding.

[0044] The first electrode 2 is a conductive copper plate, which is laid flat on the top of the frame 1 along the second direction; multiple first electrodes 2 are arranged, and the multiple first electrodes 2 are arranged at intervals along the first direction.

[0045] The second electrode 3 is a conductive copper disk, which is rotatably connected to the welding frame 44. The welding frame 44 drives the conductive copper disk to move and roll, thereby achieving continuous welding.

[0046] It is known that metallic copper has good electrical conductivity, which makes it easy to weld long strip nickel mesh, the first nickel punched mesh, and the second nickel punched mesh.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for welding nickel-plated stretched wire mesh, characterized in that, Includes the following steps: S1. The first nickel plate and the second nickel plate are punched, trimmed and pressed in sequence. After pressing, welding edges and mounting edges are formed around the first nickel plate and the second nickel plate to obtain the first nickel punched mesh and the second nickel punched mesh. S2. Lay the first nickel stamped mesh and the second nickel stamped mesh flat on the same plane, and keep the welded edges of the first nickel stamped mesh and the second nickel stamped mesh in the same plane, with their edges touching and aligned. S3. A long strip of nickel mesh is laid flat on the welding edge where the first nickel stamped mesh and the second nickel stamped mesh meet. The long strip of nickel mesh extends along the length direction of the connection between the first nickel stamped mesh and the second nickel stamped mesh, and both ends of the long strip of nickel mesh overlap the welding edge of the first nickel stamped mesh and the welding edge of the second nickel stamped mesh along the width direction. S4. Apply pressure and voltage to the overlapping parts of the first nickel-plated wire mesh and the long strip nickel mesh, and to the overlapping parts of the second nickel-plated wire mesh and the long strip nickel mesh, so that the two ends of the long strip nickel mesh in the width direction are respectively welded to the first nickel-plated wire mesh and the second nickel-plated wire mesh, and splice the first nickel-plated wire mesh and the second nickel-plated wire mesh.

2. The method for welding nickel stamped wire mesh according to claim 1, characterized in that: In S1, when trimming the first and second nickel-plated wire mesh, the sides of the first and second nickel-plated wire mesh are trimmed and pressed to form welding edges; the ends of the first and second nickel-plated wire mesh are trimmed and pressed to form mounting edges.

3. The method for welding nickel stamped wire mesh according to claim 1, characterized in that: In step S3, before laying out the long strip nickel mesh, a nickel mesh is woven using metallic nickel wire, and the woven nickel mesh is cut into long strips.

4. The method for welding nickel stamped wire mesh according to claim 1, characterized in that: In step S4, a first electrode is set below the welding edge of the first and second nickel stamped meshes, and a second electrode is set above the elongated nickel mesh. The second electrode moves toward the first electrode and applies pressure to the elongated nickel mesh. A voltage is applied to the first electrode and the second electrode to create a voltage difference between the first electrode and the second electrode. Current flows from the first electrode through the long strip nickel mesh and from the first nickel stamped mesh or the second nickel stamped mesh to the second electrode. The thermal effect of the current welds the two ends of the long strip nickel mesh in the width direction to the welding edge of the first nickel stamped mesh and the welding edge of the second nickel stamped mesh, respectively. Alternatively, current flows from the second electrode through the first or second nickel stamped mesh, and then through the long strip nickel mesh to the first electrode. The thermal effect of the current welds the two ends of the long strip nickel mesh to the welding edge of the first and second nickel stamped mesh, respectively.

5. The method for welding nickel stamped wire mesh according to claim 4, characterized in that: The first electrode is a long, straight conductive strip. The straight first electrode is used to form a straight and stable support for the first nickel punched mesh, the second nickel punched mesh and the long strip nickel mesh. The second electrode is a disc-shaped conductive disk. The disc-shaped second electrode is used to roll along the length of the first electrode to continuously roll and weld the first nickel stamped mesh, the second nickel stamped mesh, and the long strip nickel mesh.

6. A nickel punched wire mesh welding device, characterized in that: The welding construction is carried out using the nickel punching mesh welding method described in any one of claims 1-5; the specific structure includes a frame (1), a first electrode (2), a second electrode (3) and a driving mechanism (4), the top of the frame (1) is provided with a support plane (11), the first electrode (2) is fixedly connected to the support plane (11), and the driving mechanism (4) is movably connected to the frame (1) along a first direction; The second electrode (3) is mounted on the driving mechanism (4), and the second electrode (3) is movably arranged on the driving mechanism (4) along the second direction; The first direction and the second direction are arranged intersectingly; The second electrode (3) is a welding disk, which is rotatably connected to the drive mechanism (4) and is arranged to roll along the second direction; A welding space is provided between the first electrode (2) and the second electrode (3). The driving mechanism (4) drives the second electrode (3) to move toward the first electrode (2) and roll along the second direction to perform roll welding.

7. The nickel punched wire mesh welding device according to claim 6, characterized in that: The drive mechanism (4) includes a slide rail (41), a slide block (42), a gantry frame (43) and a welding frame (44). Two slide rails (41) are provided, and the two slide rails (41) are arranged parallel to each other on both sides of the frame (1). Two slide blocks (42) are arranged corresponding to the slide rails (41), and the two slide blocks (42) are slidably connected to the two slide rails (41) respectively; The two ends of the gantry frame (43) are respectively mounted on the two slide blocks (42); The welding frame (44) is slidably mounted on the gantry frame (43) along the second direction, the welding disc is rotatably mounted on the welding frame (44), and the welding frame (44) is arranged to move up and down along the height direction.

8. The nickel punched wire mesh welding device according to claim 7, characterized in that: It also includes a clamping mechanism (5), which includes a clamping seat (51) and a telescopic member (52) mounted on the clamping seat (51). The clamping seat (51) is slidably connected to the gantry frame (43) in a second direction. The telescopic member (52) is mounted on the lower end of the clamping seat (51) and extends downward in the height direction.

9. The nickel punched wire mesh welding device according to claim 8, characterized in that: Two clamping mechanisms (5) are arranged, and the two clamping mechanisms (5) are respectively arranged on both sides of the rolling welding frame (44).

10. A nickel punched wire mesh welding device according to claim 6, characterized in that: The first electrode (2) is a conductive copper plate, which is laid flat on the top of the frame (1) along the second direction; multiple first electrodes (2) are arranged, and the multiple first electrodes (2) are arranged at intervals along the first direction.

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