Filter inner and outer net welding processing device and processing method

Abstract

This invention provides a welding processing device and method for inner and outer meshes of a filter, including a processing table, a lifting mechanism, a moving mechanism, a roller electrode, a shaft electrode, and a clamping mechanism. It simplifies the complex spatial helical motion into a single axial movement of the roller electrode within the joint channel. It eliminates the need for expensive and complex high-precision multi-axis CNC systems; only a common motor is needed to drive the roller electrode to move linearly along the joint channel, completing the oblique seam welding of the filter's metal mesh. The workpiece can be rotated purely mechanically, resulting in low cost and high welding efficiency. Furthermore, a micro-forging process is used to pre-form a solid metal strip with a width of approximately 1-2 mm and no through holes. This solid strip provides a continuous and uniform contact surface for the subsequent roller electrode, thereby providing constant resistance and an ideal current path. This allows for controllable and predictable generation of welding heat, significantly reducing the occurrence of incomplete welds and overheating caused by mesh holes.

Description

Technical Field

[0001] This invention relates to the field of intelligent manufacturing industry, and in particular to a welding processing device and method for the inner and outer meshes of a filter. Background Technology

[0002] In the manufacturing of filters (such as air filters and oil filters), rolling flat metal filter screens into a cylinder and welding them into a cylindrical body (as an inner or outer mesh component) is a fundamental and critical process. Currently, the mainstream production process in the industry generally adopts straight seam welding, which involves welding the filter screen butt edges along the cylinder generatrix (axial direction). This process is mature and stable, the equipment is widely used, and the production efficiency can meet conventional needs.

[0003] However, as filter products develop towards high-pressure, high-frequency pulse, and high-reliability operating conditions, the limitations of traditional straight seam welding in terms of structural mechanical properties are becoming increasingly prominent. The weld seam becomes the single weak link in structural strength: a straight seam is a continuous longitudinal weld seam, the length of which is the height of the filter screen cylinder. As a discontinuous area in the structure, this weld seam bears all the axial stress and part of the circumferential stress. Under alternating loads, the stress is highly concentrated on this narrow weld seam, making it a potential starting point for fatigue failure and restricting the overall pressure-bearing capacity and long-term reliability of the filter screen cylinder. Improving the straight seam into a slanted joint with a certain helical angle can bring significant structural advantages: the slanted joint has a longer weld seam length on a cylinder of the same height and can better decompose and transfer stress in the axial and circumferential directions, thereby greatly improving the load-bearing capacity and fatigue resistance of the welded joint. However, translating this theoretical advantage into stable and efficient industrial production faces great difficulties. Traditional welding equipment exhibits serious inconvenience and incompatibility when implementing slanted joint welding.

[0004] Traditional roll welding machines operate in a single mode, requiring only simple relative linear motion between the welding wheel and the workpiece. To achieve a slanted joint, it is necessary to combine linear movement and rotational motion while maintaining a strict synchronization ratio to form a precise helical trajectory. This requires expensive multi-axis linkage modifications to existing equipment, involving complex mechanical structure adjustments and the integration of a high-precision servo control system. As a result, the equipment is costly, lacks flexibility, and is difficult to adapt to the needs of different product specifications (such as different diameters and different helix angles).

[0005] Furthermore, the filter's metal mesh surface has a large number of pores, which causes drastic fluctuations in contact resistance during welding, easily leading to defects such as incomplete fusion, burn-through, or spatter. The weld sealing is difficult to guarantee. Some existing technologies attempt to pre-treat the metal mesh before welding, such as laser cutting the edges or chemical cleaning, to improve welding quality. However, these methods only address the surface condition and fail to solve the problem of resistance discontinuity caused by the pores. Another technology uses local laser remelting to form a dense layer in the welding area, but this requires large equipment investment, high energy consumption, and the heat-affected zone is prone to damaging the mechanical properties of the mesh. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the aforementioned problems in the prior art, the present invention provides a filter inner and outer mesh welding processing device and processing method.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0010] A filter inner and outer mesh welding processing device includes a processing table, a lifting mechanism, a moving mechanism, a roller electrode, a shaft electrode, and a clamping mechanism;

[0011] The lifting mechanism is mounted on the processing machine table, and the lifting end of the lifting mechanism is connected to the moving mechanism;

[0012] The moving end of the moving mechanism is provided with a mounting bracket;

[0013] The roller electrode is disposed at the bottom of the mounting bracket;

[0014] The shaft electrode is disposed on one side of the machining table and located directly below the moving mechanism;

[0015] The clamping mechanism includes two semi-ring bodies arranged in pairs. One end of each semi-ring body is provided with a connecting seat, and the bottom of the connecting seat is provided with a connecting post. The connecting posts on the connecting seats of the two semi-ring bodies are connected by a tension spring. The other end of each semi-ring body is set with an inclined surface, and a limiting protrusion is provided on the inclined surface. Under the action of the tension spring, the two semi-ring bodies are clamped on the shaft electrode, and a joint channel corresponding to the inclined seam of the filter metal mesh is formed between the two limiting protrusions.

[0016] Preferably, it also includes a forging mechanism, which includes a forging cylinder, forging balls, ball seats, and connecting rods;

[0017] The forging cylinder is fixedly mounted on the mounting bracket, and the piston rod of the forging cylinder is connected to the ball bearing seat through the connecting rod;

[0018] The forged balls are installed inside the ball bearing seat.

[0019] Preferably, the forging mechanism further includes a clamping seat, a limiting ring, and a compression spring;

[0020] The bottom of the clamping seat is provided with a clamping groove, and the two side walls of the clamping groove extend upward and inward from the two side edges of the bottom opening of the clamping groove. The top of the inner wall of the clamping groove is provided with a mounting hole, and the clamping seat is sleeved on the connecting rod through the mounting hole.

[0021] The limiting ring is disposed on the connecting rod and above the clamping seat;

[0022] The compression spring is sleeved on the connecting rod, one end of the compression spring is connected to the limiting ring, and the other end of the compression spring is connected to the clamping seat;

[0023] The outer wall of the limiting protrusion away from the joint channel is provided with an inclined surface corresponding to the inner wall of the pressing groove.

[0024] Preferably, a control guide groove is provided at the bottom of the shaft electrode. The control guide groove includes two control support grooves that extend symmetrically along the length direction of the shaft electrode. The control support groove includes a control section and a holding section. The inner wall of the semi-ring body is provided with a guide post corresponding to the control support groove. When the guide post moves in the control section, it controls the two semi-ring bodies to slide along the length direction of the control section groove and achieve contact or separation. When the guide post moves into the holding section, the two semi-ring bodies remain in a separated state.

[0025] Preferably, the shaft electrode is mounted on the machining table via a bearing, and a torsion spring is installed at one end of the shaft electrode near the machining table. One lever arm of the torsion spring is connected to the shaft electrode, and the other lever arm of the torsion spring is connected to the machining table.

[0026] Preferably, the processing machine is equipped with a welding power source, the first output terminal of the welding power source is electrically connected to the roller electrode, and the second output terminal of the welding power source is electrically connected to the shaft electrode.

[0027] Preferably, the lifting mechanism includes a lifting frame, a lifting cylinder, a lifting guide rail, a slider, and a lifting plate;

[0028] The lifting guide rail is vertically installed on the surface of the lifting frame;

[0029] The slider is slidably mounted on the lifting guide rail;

[0030] The lifting plate is fixedly installed on the surface of the slider;

[0031] The lifting plate is mounted on the lifting frame, and the piston rod of the lifting cylinder is connected to the lifting plate;

[0032] The moving mechanism is mounted on the lifting plate.

[0033] Preferably, the moving mechanism includes a moving guide rail and a walking robot mounted on the moving guide rail, and the mounting frame is mounted on the walking robot.

[0034] A processing method for a filter inner and outer mesh welding processing device includes the following steps:

[0035] S1: Place the metal mesh of the filter to be welded onto the shaft electrode;

[0036] S2: The filter metal mesh is held and fixed on the shaft electrode by two semi-circular hoops, and the joint channel is aligned with the oblique seam of the filter metal mesh.

[0037] S3: The lifting mechanism drives the mounting bracket to move downward, so that the forged balls and roller electrodes enter the joint channel;

[0038] S4: The forging cylinder drives the ball seat to move downward, so that the forged balls in the ball seat come into contact with the oblique seam of the filter metal mesh, and the forging balls achieve forging of the oblique seam of the filter metal mesh.

[0039] S5: Driven by the moving mechanism, the forged balls and roller electrodes move from the beginning to the end of the joint channel, realizing the processing method of forging first and then rolling and welding.

[0040] (III) Beneficial Effects

[0041] The beneficial effects of this invention are as follows:

[0042] 1. This application simplifies the complex spatial spiral motion into a single axial movement of the roller electrode within the joint channel. It eliminates the need for an expensive and complex high-precision multi-axis linkage CNC system. Only a common motor is needed to drive the roller electrode to move linearly along the joint channel to complete the oblique seam welding of the filter metal mesh. The workpiece can be rotated through a purely mechanical means, which reduces the electrical cost of the equipment and the complexity of software debugging by orders of magnitude. It is low-cost and has high welding efficiency.

[0043] 2. In this application, a solid metal strip with a width of about 1-2 mm and no through holes is formed in advance by micro-forging. This solid strip provides a continuous and uniform contact surface for the subsequent roller electrode, thereby providing constant resistance and an ideal current path, realizing controllable and predictable generation of welding heat, and greatly reducing the occurrence of problems such as poor welding and overheating caused by mesh.

[0044] 3. In the process of pressing the forging ball down, this application triggers the two semi-ring hoops to close, integrating the clamping function into the clamping mechanism, which can eliminate the need for a separate clamping mechanism, making the structure compact and low-cost. At the same time, it can make the clamping action and the rolling pretreatment complete simultaneously, eliminating waiting time and reference conversion between processes, and improving the stability of the forging and rolling welding processes. Attached Figure Description

[0045] Figure 1 This is a schematic diagram of the metal mesh structure of a beveled joint filter.

[0046] Figure 2 This is a schematic diagram of a filter inner and outer mesh welding processing device.

[0047] Figure 3 This is a schematic diagram of the main structure of a filter inner and outer mesh welding and processing device;

[0048] Figure 4 Schematic diagram of the clamping mechanism Figure 1 ;

[0049] Figure 5 Schematic diagram of the clamping mechanism Figure 2 ;

[0050] Figure 6 This is a schematic diagram of the forging mechanism.

[0051] Explanation of reference numerals in the attached figures

[0052] 1. Processing machine;

[0053] 2. Lifting mechanism;

[0054] 3. Moving mechanism;

[0055] 4. Mounting bracket;

[0056] 5. Roller electrode;

[0057] 6. Axial electrode;

[0058] 7. Clamping mechanism;

[0059] 71. Semi-circular hoop; 72. Connecting seat; 73. Tension spring; 74. Limiting protrusion; 75. Control section; 76. Holding section;

[0060] 8. Forging mechanism;

[0061] 81. Forged cylinder; 82. Connecting rod; 83. Limiting ring; 84. Compression spring; 85. Pressing seat; 86. Ball bearing seat; 87. Forged ball bearing;

[0062] 9. Torsion spring. Detailed Implementation

[0063] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0064] Please refer to Figures 1 to 3 The present invention provides a filter inner and outer mesh welding processing device, including a processing table 1, a lifting mechanism 2, a moving mechanism 3, a roller electrode 5, a shaft electrode 6, and a clamping mechanism 7;

[0065] The lifting mechanism 2 is mounted on the processing machine table 1, and the lifting end of the lifting mechanism 2 is connected to the moving mechanism 3;

[0066] A mounting bracket 4 is provided on the moving end of the moving mechanism 3;

[0067] Roller electrode 5 is located at the bottom of mounting bracket 4;

[0068] The shaft electrode 6 is located on one side of the machining table 1 and directly below the moving mechanism 3;

[0069] The clamping mechanism 7 includes two semi-ring hoops 71 arranged in pairs. One end of the semi-ring hoops 71 is provided with a connecting seat 72. The bottom of the connecting seat 72 is provided with a connecting post. The connecting posts on the connecting seats 72 of the two semi-ring hoops 71 are connected by a tension spring 73. The other end of the semi-ring hoops 71 is set with an inclined surface, and a limiting protrusion 74 is provided on the inclined surface. Under the action of the tension spring 73, the two semi-ring hoops 71 are clamped on the shaft electrode 6, and a joint channel corresponding to the inclined seam of the filter metal mesh is formed between the two limiting protrusions 74.

[0070] In use, the filter metal mesh to be welded is placed on the shaft electrode 6, and then the filter metal mesh is held and fixed on the shaft electrode 6 by two semi-ring hoops 71, so that the joint channel is aligned with the oblique seam of the filter metal mesh. The lifting mechanism 2 makes the roller electrode 5 enter the starting end of the joint channel, and the moving mechanism 3 drives the roller electrode 5 to move from the starting end to the ending end of the joint channel to complete the oblique seam welding of the filter metal mesh. This invention simplifies the complex spatial spiral motion to a single axial movement of the roller electrode 5 in the joint channel. It does not require an expensive and complex high-precision multi-axis linkage CNC system. Only an ordinary motor is needed to drive the roller electrode 5 to move in a straight line along the joint channel. The workpiece can be rotated by a purely mechanical means. The electrical cost of the equipment and the complexity of software debugging are reduced by orders of magnitude. The cost is low and the welding efficiency is high.

[0071] refer to Figure 6 In this embodiment, a forging mechanism 8 is also included, which includes a forging cylinder 81, forging balls 87, ball seats 86, and a connecting rod 82.

[0072] The forging cylinder 81 is fixedly mounted on the mounting bracket 4, and the piston rod of the forging cylinder 81 is connected to the ball bearing seat 86 through the connecting rod 82;

[0073] Forged ball bearings 87 are installed inside ball bearing seat 86.

[0074] The forging mechanism 8 also includes a clamping seat 85, a limiting ring 83, and a compression spring 84;

[0075] The bottom of the clamping seat 85 is provided with a clamping groove. The two side walls of the clamping groove extend upward and inward from the two side edges of the bottom opening of the clamping groove. The top of the inner wall of the clamping groove is provided with a mounting hole. The clamping seat 85 is sleeved on the connecting rod 82 through the mounting hole.

[0076] The limiting ring 83 is mounted on the connecting rod 82 and is positioned above the clamping seat 85;

[0077] A compression spring 84 is sleeved on a connecting rod 82. One end of the compression spring 84 is connected to a limiting ring 83, and the other end of the compression spring 84 is connected to a clamping seat 85.

[0078] The outer wall of the limiting protrusion 74, which is away from the joint channel, is provided with an inclined surface corresponding to the inner wall of the pressing groove.

[0079] In use, the forging cylinder 81 drives the ball bearing seat 86 to move downward, so that the forged balls 87 in the ball bearing seat 86 come into contact with the oblique seam of the filter metal mesh. Under the control of the moving mechanism 3, the forging mechanism 8 can move from the beginning end to the end end of the joint channel. Since the contact between the forged balls 87 and the filter metal mesh is a point contact, the pressure is extremely high, which can more effectively crush and compact the intersection of the filter metal mesh wires to form a dense solid band. A micro-protrusion solid metal band with a width of about 1-2 mm and no through holes is formed in advance through micro-forging. This solid band provides a continuous and uniform contact surface for the subsequent roller electrode 5, thereby providing constant resistance and an ideal current path, realizing controllable and predictable generation of welding heat, and greatly reducing the occurrence of problems such as false welding and overheating caused by mesh holes.

[0080] In this embodiment, during the downward movement of the connecting rod 82 driven by the forging cylinder 81, the clamping seat 85 moves downward along with the connecting rod 82. The side walls on both sides of the inner wall of the clamping groove in the clamping seat 85 cause the limiting protrusions 74 on the two semi-ring hoops 71 to move towards each other, increasing the clamping pressure of the semi-ring hoops 71 on the filter metal mesh on the shaft electrode 6, thus improving the stability during the forging and rolling welding process. In this application, during the downward pressing of the forging ball 87, the two semi-ring hoops 71 are triggered to close, integrating the clamping function into the clamping mechanism 7, which eliminates the need for a separate clamping mechanism, making the structure compact and low-cost. At the same time, it enables the clamping action to be completed simultaneously with the rolling pretreatment, eliminating waiting time and reference conversion between processes.

[0081] refer to Figure 4 and Figure 5 In this embodiment, a control guide groove is provided at the bottom of the shaft electrode 6. The control guide groove includes two control support grooves that extend along the length direction of the shaft electrode 6 and are symmetrically arranged. The control support groove includes a control section 75 and a holding section 76. The inner wall of the semi-ring body 71 is provided with a guide post corresponding to the control support groove. When the guide post moves in the control section 75, it controls the two semi-ring bodies 71 to slide along the length direction of the groove of the control section 75 and achieve contact or separation. When the guide post moves into the holding section 76, the two semi-ring bodies 71 remain in a separated state.

[0082] In use, the semi-ring 71 can be pushed towards the processing table 1 by manual or mechanical assistance. With the cooperation of the guide column and the control section 75, the two semi-ring 71 gradually separate until they enter the holding section 76, keeping the two semi-ring 71 in a separated state. This facilitates the quick installation of the filter metal mesh to be welded onto the shaft electrode 6.

[0083] In this embodiment, the shaft electrode 6 is mounted on the processing machine table 1 via a bearing. A torsion spring 9 is installed at one end of the shaft electrode 6 near the processing machine table 1. One arm of the torsion spring 9 is connected to the shaft electrode 6, and the other arm of the torsion spring 9 is connected to the processing machine table 1.

[0084] The shaft electrode 6 is equipped with a torsion spring 9, which enables it to automatically reset after rotation, so as to facilitate subsequent processing of the filter metal mesh.

[0085] In this embodiment, a welding power source is provided inside the processing machine 1. The first output terminal of the welding power source is electrically connected to the roller electrode 5, and the second output terminal of the welding power source is electrically connected to the shaft electrode 6.

[0086] In this embodiment, the lifting mechanism 2 includes a lifting frame, a lifting cylinder, a lifting guide rail, a slider, and a lifting plate;

[0087] The lifting guide rails are vertically installed on the surface of the lifting frame;

[0088] The slider is slidably mounted on the lifting guide rail;

[0089] The lifting plate is fixedly installed on the surface of the slider;

[0090] The lifting plate is installed on the lifting frame, and the piston rod of the lifting cylinder is connected to the lifting plate;

[0091] The moving mechanism 3 is installed on the lifting plate;

[0092] In use, the lifting cylinder controls the lifting plate to move up and down, thereby controlling the lifting of the roller electrode 5.

[0093] In this embodiment, the moving mechanism 3 includes a moving guide rail and a walking robot mounted on the moving guide rail, and the mounting frame 4 is mounted on the walking robot.

[0094] A processing method for a filter inner and outer mesh welding processing device includes the following steps:

[0095] S1: Place the metal mesh of the filter to be welded onto the shaft electrode 6;

[0096] S2: The filter metal mesh is tightly fixed to the shaft electrode 6 by two semi-ring hoops 71, and the joint channel is aligned with the oblique seam of the filter metal mesh.

[0097] S3: The lifting mechanism 2 drives the mounting bracket 4 to move downward, so that the forged ball 87 and the roller electrode 5 both enter the joint channel;

[0098] S4: The forging cylinder 81 drives the ball seat 86 to move downward, so that the forging ball 87 in the ball seat 86 contacts the oblique seam of the filter metal mesh, and the forging ball 87 is used to forge the oblique seam of the filter metal mesh.

[0099] S5: Driven by the moving mechanism 3, the forged ball 87 and the roller electrode 5 move from the beginning to the end of the joint channel, realizing the processing method of forging first and then rolling and welding.

[0100] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention's specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

[0101] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A filter inner and outer mesh welding processing device, characterized in that, It includes a processing machine table, a lifting mechanism, a moving mechanism, roller electrodes, shaft electrodes, and a clamping mechanism; The lifting mechanism is mounted on the processing machine table, and the lifting end of the lifting mechanism is connected to the moving mechanism; The moving end of the moving mechanism is provided with a mounting bracket; The roller electrode is disposed at the bottom of the mounting bracket; The shaft electrode is disposed on one side of the machining table and located directly below the moving mechanism; The clamping mechanism includes two semi-ring bodies arranged in pairs. One end of each semi-ring body is provided with a connecting seat, and the bottom of the connecting seat is provided with a connecting post. The connecting posts on the connecting seats of the two semi-ring bodies are connected by a tension spring. The other end of each semi-ring body is set with an inclined surface, and a limiting protrusion is provided on the inclined surface. Under the action of the tension spring, the two semi-ring bodies are clamped on the shaft electrode, and a joint channel corresponding to the inclined seam of the filter metal mesh is formed between the two limiting protrusions.

2. The filter inner and outer mesh welding processing device according to claim 1, characterized in that, It also includes a forging mechanism, which includes a forging cylinder, forging balls, ball seats and connecting rods; The forging cylinder is fixedly mounted on the mounting bracket, and the piston rod of the forging cylinder is connected to the ball bearing seat through the connecting rod; The forged balls are installed inside the ball bearing seat.

3. The filter inner and outer mesh welding processing device according to claim 2, characterized in that, The forging mechanism also includes a clamping seat, a limiting ring, and a compression spring; The bottom of the clamping seat is provided with a clamping groove, and the two side walls of the clamping groove extend upward and inward from the two side edges of the bottom opening of the clamping groove. The top of the inner wall of the clamping groove is provided with a mounting hole, and the clamping seat is sleeved on the connecting rod through the mounting hole. The limiting ring is disposed on the connecting rod and above the clamping seat; The compression spring is sleeved on the connecting rod, one end of the compression spring is connected to the limiting ring, and the other end of the compression spring is connected to the clamping seat; The outer wall of the limiting protrusion away from the joint channel is provided with an inclined surface corresponding to the inner wall of the pressing groove.

4. The filter inner and outer mesh welding processing device according to claim 1, characterized in that, The bottom of the shaft electrode is provided with a control guide groove, which includes two control support grooves that extend symmetrically along the length of the shaft electrode. Each control support groove includes a control section and a holding section. The inner wall of the semi-ring body is provided with a guide post corresponding to the control support groove. When the guide post moves in the control section, it controls the two semi-ring bodies to slide along the length of the control section groove and achieve contact or separation. When the guide post moves into the holding section, the two semi-ring bodies remain in a separated state.

5. The filter inner and outer mesh welding processing device according to claim 1, characterized in that, The shaft electrode is mounted on the machining table via bearings. A torsion spring is installed at one end of the shaft electrode near the machining table. One lever arm of the torsion spring is connected to the shaft electrode, and the other lever arm of the torsion spring is connected to the machining table.

6. The filter inner and outer mesh welding processing device according to claim 1, characterized in that, The processing machine is equipped with a welding power source. The first output terminal of the welding power source is electrically connected to the roller electrode, and the second output terminal of the welding power source is electrically connected to the shaft electrode.

7. The filter inner and outer mesh welding processing device according to claim 1, characterized in that, The lifting mechanism includes a lifting frame, a lifting cylinder, a lifting guide rail, a slider, and a lifting plate; The lifting guide rail is vertically installed on the surface of the lifting frame; The slider is slidably mounted on the lifting guide rail; The lifting plate is fixedly installed on the surface of the slider; The lifting plate is mounted on the lifting frame, and the piston rod of the lifting cylinder is connected to the lifting plate; The moving mechanism is mounted on the lifting plate.

8. The filter inner and outer mesh welding processing device according to claim 1, characterized in that, The moving mechanism includes a moving guide rail and a walking robot mounted on the moving guide rail, and the mounting frame is mounted on the walking robot.

9. A processing method based on the filter inner and outer mesh welding processing device according to any one of claims 1-8, characterized in that, Includes the following steps: S1: Place the metal mesh of the filter to be welded onto the shaft electrode; S2: The filter metal mesh is held and fixed on the shaft electrode by two semi-circular hoops, and the joint channel is aligned with the oblique seam of the filter metal mesh. S3: The lifting mechanism drives the mounting bracket to move downward, so that the forged balls and roller electrodes enter the joint channel; S4: The forging cylinder drives the ball seat to move downward, so that the forged balls in the ball seat come into contact with the oblique seam of the filter metal mesh, and the forging balls achieve forging of the oblique seam of the filter metal mesh. S5: Driven by the moving mechanism, the forged balls and roller electrodes move from the beginning to the end of the joint channel, realizing the processing method of forging first and then rolling and welding.

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