An automatic welding device and method for flexible joints with no excess nickel sheet

Abstract

This application relates to an automatic welding device and method for flexible nickel strip connections without excess material, belonging to the technical field of flexible copper strip connections. It includes a general-purpose material handling device and a welding gripper device. The general-purpose material handling device includes a support structure, a positioning structure disposed on the upper end of the support structure, and a lifting structure disposed inside the support structure. The positioning structure is used to position the nickel strips for the flexible connection, and the lifting structure is used to support the nickel strips. The welding gripper device includes a clamping mechanism and a clamping control mechanism for driving the clamping mechanism to clamp. The clamping mechanism is used to clamp the positioned nickel strip and move it to the welding position, and the clamping control mechanism is used to control the clamping and loosening of the clamping mechanism. The device and its operation method described in this application are not only precise in positioning, highly efficient, and easily automated, but also greatly improve product processing efficiency through parallel operation, ensuring dimensional accuracy, and allowing for rapid adjustment and switching according to product dimensions.

Description

Technical Field

[0001] This application relates to the technical field of copper strip flexible joints, and in particular to an automatic welding device and method for non-residual nickel sheet flexible joints. Background Technology

[0002] As the length of existing copper strip flexible connectors increases, in order to reduce material costs while ensuring product quality, the method has been changed from attaching nickel sheets to both the top and bottom edges to attaching nickel sheets at the ends.

[0003] After process improvement, the end-mounted nickel sheet needs to have a reserved dimension for automatic welding grippers to enable automated welding and save on welders. However, the reserved nickel sheet may puncture the heat shrink tubing in subsequent processes, increasing product rework costs. If the nickel sheet is not reserved, automated welding is impossible, requiring manual welding and increasing costs. Therefore, the goal of cost reduction and efficiency improvement cannot be achieved. Summary of the Invention

[0004] The purpose of this application is to provide an automatic welding device and method for flexible joints with zero allowance nickel sheets.

[0005] The automatic welding device for flexible joints of nickel sheets without excess filler provided in this application adopts the following technical solution:

[0006] An automatic welding device for flexible nickel sheet without excess filler metal, comprising:

[0007] A general-purpose feeding device for positioning nickel sheets for flexible connections;

[0008] Welding gripper device for holding nickel sheets with flexible connections;

[0009] The general material handling device includes a support structure, a positioning structure located on the upper end of the support structure, and a lifting structure located inside the support structure. The positioning structure is used to position the flexible nickel sheet, and the lifting structure is used to support the nickel sheet. The welding gripper device includes a clamping mechanism and a clamping control mechanism that drives the clamping mechanism to clamp. The clamping mechanism is used to clamp the positioned nickel sheet and move it to the welding position, and the clamping control mechanism is used to control the clamping and loosening of the clamping mechanism.

[0010] As a preferred technical solution of this application, the support structure includes:

[0011] Base plate;

[0012] Two support plates are vertically connected to the base plate;

[0013] The first fixing plate is fixedly connected to the top of the two support plates; and

[0014] The pad is fixedly connected to both ends of the upper surface of the first fixing plate.

[0015] As a preferred technical solution of this application, the lifting structure includes:

[0016] A fixed cylinder is positioned between two support plates, with the piston rod pointing upwards;

[0017] A cylinder mounting plate, fixedly connected between two support plates, is used to mount and fix the cylinder; and

[0018] The lifting nut is fixedly connected to the top of the piston rod of the fixed cylinder.

[0019] As a preferred technical solution of this application, the positioning structure includes:

[0020] Positioning pin plate, connected to the lifting nut;

[0021] The locating pin sealing plate is connected to the lower side of the locating pin plate;

[0022] Four guide pins, arranged in a rectangle on the upper surface of the positioning pin plate, serve as guides for the lifting and lowering of the positioning pin plate;

[0023] Three adjusting brackets are connected to the upper surface of the locating pin plate and positioned between four guide pins; and

[0024] The adjusting column, threadedly connected to the adjusting bracket, is used to control the height of the nickel plate.

[0025] As a preferred technical solution of this application, the support structure further includes:

[0026] The lower template is connected to the pad plate and has through holes for the guide pins to pass through;

[0027] Two adjusting rods are connected to the same end of the lower template;

[0028] Two support rods are vertically connected to the two adjusting rods on the side facing the adjusting column, and are used to support and lift the nickel sheet from below.

[0029] As a preferred technical solution of this application, the clamping control mechanism includes:

[0030] Rodless cylinders are used to connect to robotic arms;

[0031] The second fixed plate is connected to the rodless cylinder and is driven to move by the rodless cylinder; and

[0032] Two gripper cylinders are connected to both sides of the second fixed plate, respectively, to control the clamping and loosening of the gripping mechanism.

[0033] As a preferred technical solution of this application, the clamping mechanism includes a first clamping component and a second clamping component respectively connected to two gripper cylinders. The first clamping component and the second clamping component have the same structure and move synchronously to clamp or release the nickel sheet.

[0034] As a preferred technical solution of this application, the first clamping component includes two parts that are arranged opposite to each other;

[0035] The upper part of the first clamping assembly is connected to the cylinder body of the gripper cylinder, including:

[0036] The first connecting plate is connected to the cylinder body of the gripper cylinder;

[0037] The second connecting plate is connected to the first connecting plate;

[0038] The first pressure plate is connected to the second connecting plate;

[0039] Several telescopic columns are connected to the side of the first pressure plate facing the lower part of the first clamping assembly; and

[0040] A spring clip, connected to the end of the telescopic column, is used to abut against the nickel plate;

[0041] The lower part of the first clamping assembly is connected to the piston rod end of the gripper cylinder, including:

[0042] The first connecting plate is connected to the piston rod end of the gripper cylinder;

[0043] The second connecting plate is connected to the first connecting plate; and

[0044] The first pressure plate is connected to the second connecting plate.

[0045] As a preferred technical solution of this application, the device is equipped with a dual-station universal material handling device, a feeding robot equipped with a welding gripper device, a welding machine, and a picking robot equipped with a welding gripper device.

[0046] The automatic welding method for zero-reserve nickel sheet flexible joints provided in this application adopts the following technical solution:

[0047] An automated welding method for flexible nickel strip connections with no excess filler includes the following steps:

[0048] Place the spare nickel sheet flexible connectors onto the dual-station universal material handling device and press the start button;

[0049] The unloading robot equipped with welding gripper device moves to the product clamping position. The gripper cylinder and the gripper cylinder respectively act to clamp the flexible nickel sheet without excess material. The telescopic column and the spring clamp the flexible nickel sheet without excess material.

[0050] The fixed cylinder drives the adjusting column to retract, causing the product positioning structure to detach from the product;

[0051] The unloading robot clamps the product and moves it to the welding machine to be welded. A portion of the nickel sheets are pre-welded. The gripper cylinder opens, the rodless cylinder retracts, and the unloading robot clamps the product to the nickel sheet welding position for secondary nickel sheet welding.

[0052] The material handling robot equipped with welding gripper devices moves to the material handling position of the welding machine, the gripper cylinders hold the product, and after the welding machine signals the completion of welding, the product is cooled and unloaded.

[0053] After the picking robot grips the product, the unloading robot opens the gripper cylinder and moves to the dual-station universal material handling device to grip the product. The unloading robot will go to the station that gives the start signal to grip the product.

[0054] The above parallel actions are executed cyclically.

[0055] In summary, this application includes at least one of the following beneficial technical effects:

[0056] 1. The device and operating method of the device in this application are not only accurate in positioning, efficient, and easy to automate, but also greatly improve the processing efficiency of products through parallel operation, ensure dimensional processing accuracy, and can be quickly adjusted and switched according to product size.

[0057] 2. The system enables parallel, zero-reserve nickel sheet soft connection automatic welding at dual workstations, reducing the need for two welding workers. The flexible gripper design reduces product misalignment and tilting, and improves product qualification rate and production efficiency. Attached Figure Description

[0058] Figure 1 This is a front view of the general material handling apparatus in the embodiments of this application;

[0059] Figure 2 This is a top view of the general material handling apparatus in the embodiments of this application;

[0060] Figure 3 This is an isometric view of the general material handling device in the embodiments of this application;

[0061] Figure 4 This is a front view of the welding gripper device in the embodiment of this application;

[0062] Figure 5 This is a top view of the welding gripper device in the embodiment of this application;

[0063] Figure 6 This is an isometric view of the welding gripper device in the embodiment of this application;

[0064] Figure 7 This is a top view of the nickel sheet flexible connection welding production line in the apparatus of this application embodiment;

[0065] Figure 8 This is an isometric view of the nickel sheet flexible connection welding production line in the apparatus of this application embodiment;

[0066] In the diagram, 1. Base plate; 2. Support plate; 3. Fixed cylinder; 4. Cylinder fixing plate; 5. First fixing plate; 6. Pad plate; 7. Lower template; 8. Support plate; 9. Adjusting column; 10. Positioning pin sealing plate; 11. Positioning pin plate; 12. Lifting nut; 13. Adjusting bracket; 15. Lower template; 16. Pad plate; 17. Rear positioning plate; 19. Guide pin; 20. Support rod; 21. Gripper cylinder; 22. First connecting plate; 23. Second connecting plate; 24. Pressure plate; 25. Telescopic column; 26. Spring; 27. Gripper cylinder; 28. Fixed reinforcing plate; 29. ​​Second fixing plate; 30. Rodless cylinder; 31. Second pressure plate; 32. General material handling device; 33. Unloading robot; 34. Welding machine; 35. Retrieving robot. Detailed Implementation

[0067] The following is in conjunction with the appendix Figure 1 -Appendix Figure 8 This application will be described in further detail below.

[0068] Example: This application proposes an automatic welding device for flexible joints of nickel sheets with no excess filler, referring to... Figure 1-8 The device includes a general-purpose material handling unit 32, a welding gripper device, a feeding robot 33, a welding machine 34, and a picking robot 35. The general-purpose material handling unit 32, equipped with two workstations, improves the efficiency of loading and unloading. The feeding robot 33 is equipped with a set of welding grippers for gripping nickel sheets placed on the general-purpose material handling unit 32. The feeding robot 33 uses the welding grippers to place the nickel sheets onto the welding machine 4 for welding with copper strips. The picking robot 35 is equipped with a set of welding grippers and uses the welding grippers to remove the welded copper strips and nickel sheets. In this embodiment, both the feeding robot 33 and the picking robot 35 are automated robotic arms.

[0069] The general-purpose feeding device 32 is used to position the nickel sheets of the flexible connector, facilitating accurate gripping by the welding jaw device. The welding jaw device is used to hold the nickel sheets of the flexible connector, ensuring precise placement and guaranteeing welding quality.

[0070] For example, the general feeding device 32 includes a support structure, a positioning structure and a lifting structure. The support structure serves as a support, the positioning structure is installed on top of the support structure and is used to limit the precise position of the nickel sheet, and the lifting structure is used to lift the nickel sheet. When the welding gripper device picks up the nickel sheet, the lifting structure lowers to make way for the welding gripper device.

[0071] Furthermore, the support structure includes a base plate 1, a support plate 2, a first fixing plate 5, a pad plate 6, a pad plate 16, a lower template 7, a lower template 15, an adjusting rod 8, and a support rod 20.

[0072] The base plate 1 is set as a rectangular plate, which serves as the base of the general material handling device 32 and plays a stabilizing role.

[0073] There are two support plates 2 arranged opposite each other and vertically connected to the middle of the upper surface of the base plate 1. There is a space between the two support plates 2 for installing the bracket structure.

[0074] The first fixing plate 5 is laid flat and fixedly connected to the top of the two support plates 2. The two sides of the first fixing plate 5 protrude outward from the outside of the two support plates 2. The bottom plate 1 and the first fixing plate 5 are provided with through holes at the positions corresponding to the two support plates 2.

[0075] Pad 6 and pad 16 are vertically fixed at both ends of the upper surface of the first fixing plate 5, and pad 6 and pad 16 are placed upright.

[0076] The lower template 7 is connected to the base plate 6, and the lower template 15 is connected to the base plate 16. The lower template 7 and the lower template 15 are laid horizontally. Both the lower template 7 and the lower template 15 have through holes that pass through from top to bottom, and the through holes avoid the positions of the base plate 6 and the base plate 16.

[0077] Two adjusting rods 8 are respectively connected to the ends of the lower template 7 and the lower template 15 away from the welding machine 34. The two adjusting rods 8 are placed horizontally at the same height. An adjusting groove is provided on the adjusting rod 8 along the axial direction. The adjusting rod 8 is connected to the lower template 7 and the lower template 15 by bolts passing through the adjusting groove, so that the distance between the two adjusting rods 8 can be adjusted.

[0078] Two support rods 20 are vertically connected to the two adjusting rods 8 on the side facing the welding machine 34, respectively. The two support rods 20 are at the same height and parallel in axis, and are used to support and lift the nickel sheet from below. By adjusting the distance between the adjusting rods 8 and the lower template 7 and the lower template 15, the distance between the two support rods 20 can be adjusted, so that the support structure can hold nickel sheets of different sizes.

[0079] Furthermore, the lifting structure includes a fixed cylinder 3, a cylinder fixing plate 4, and a lifting nut 12.

[0080] The piston rod of the fixed cylinder 3 is positioned upward between the two support plates 2. The cylinder fixing plate 4 is vertically fixed between the two support plates 2. The cylinder body of the fixed cylinder 3 is connected to the lower side of the cylinder fixing plate 4. The piston rod of the fixed cylinder 3 passes upward through the cylinder fixing plate 4 and the first fixing plate 5 in sequence. The lifting nut 12 is fixedly connected to the top of the piston rod of the fixed cylinder 3 and is located above the first fixing plate 5. The positioning structure is connected to the lifting nut 12.

[0081] Furthermore, the positioning structure includes an adjusting column 9, a positioning pin sealing plate 10, a positioning pin plate 11, an adjusting bracket 13, and a guide pin 19.

[0082] The positioning pin plate 11 is connected to the lifting nut 12. The lower surface of the positioning pin plate 11 has a groove that mates with the lifting nut 12, and the lifting nut 12 extends into the groove.

[0083] The positioning pin sealing plate 10 is bolted to the lower side of the positioning pin plate 11, and locks the lifting nut 12 from the bottom to prevent the lifting nut 12 from disengaging from the positioning pin plate 11.

[0084] Four guide pins 19 are provided, which are distributed in a rectangular shape on the upper surface of the positioning pin plate 11. Two guide pins are provided at each end of the upper surface of the positioning pin plate 11. The four guide pins 19 pass through the through holes opened on the lower template 7 and the lower template 15 respectively, so that the lower template 7 and the lower template 15 cooperate with the four guide pins 19 to guide the lifting and lowering of the positioning pin plate 11.

[0085] Three adjusting brackets 13 are provided along the length of the positioning pin plate 11. The adjusting brackets 13 are placed upright and vertically connected to the upper surface of the positioning pin plate 11. The adjusting brackets 13 are all located in the area between the four guide pins 19.

[0086] The adjusting column 9 is threaded to the top of the adjusting bracket 13. Two adjusting columns 9 are installed on each adjusting bracket 13 to control the height of the nickel sheet.

[0087] The lifting structure controls the lifting of the positioning structure, so that the nickel sheet can fall onto the support rod 20 as the adjusting bracket 13 descends.

[0088] For example, the welding gripper device includes a clamping mechanism and a clamping control mechanism for driving the clamping mechanism to clamp. The clamping mechanism is used to clamp the positioned nickel sheet and move it to the welding position, and the clamping control mechanism is used to control the clamping and loosening of the clamping mechanism.

[0089] Furthermore, the clamping control mechanism includes a gripper cylinder 21, a gripper cylinder 27, a fixed reinforcing plate 28, a second fixed plate 29, and a rodless cylinder 30.

[0090] The rodless cylinder 30 is used to connect to the robotic arm of the unloading robot 33 or the picking robot 35, and the retraction of the rodless cylinder 30 is controlled by the unloading robot 33 or the picking robot 35.

[0091] The fixed reinforcing plate 28 is connected to the telescopic end of the rodless cylinder 30, and the second fixed plate 29 is connected to the rodless cylinder 30 through the fixed reinforcing plate 28 and is driven to move by the rodless cylinder 30.

[0092] The gripper cylinders 21 and 27 are respectively connected to both sides of the second fixed plate 29 and are used to control the clamping and loosening of the gripping mechanism.

[0093] Furthermore, the clamping mechanism includes a first clamping component connected to the gripper cylinder 21 and a second clamping component connected to the gripper cylinder 27. The first clamping component and the second clamping component have the same structure and move synchronously to clamp or release the nickel sheet.

[0094] For example, the first clamping component includes two parts that are arranged vertically opposite each other;

[0095] The upper part of the first clamping assembly is connected to the cylinder body of the gripper cylinder 21, and includes a first connecting plate 22, a second connecting plate 23, a first pressure plate 24, a telescopic column 25, and a spring piece 26.

[0096] The first connecting plate 22 is a vertical plate and is fixedly connected to the cylinder body of the gripper cylinder 21; the second connecting plate 23 is a horizontal plate and is vertically connected to the first connecting plate 23; the first pressure plate 24 is a long strip plate and is fixedly connected to the second connecting plate 23 at one end.

[0097] Several telescopic columns 25 are fixedly installed on the lower surface of the first pressure plate 24. The length of the telescopic column 25 can be adjusted. Each telescopic column 25 has a spring piece 26 connected to its end, which presses against the nickel sheet.

[0098] For example, the lower part of the first clamping assembly is connected to the piston rod end of the gripper cylinder 21, and includes a first connecting plate 22, a second connecting plate 23, and a first pressure plate 24. The first connecting plate 22 is connected to the piston rod end of the gripper cylinder 21. The difference between the lower and upper parts of the first clamping assembly is that the lower part of the first clamping assembly does not have a telescopic post 25 and a spring 26. The extension and retraction of the gripper cylinder 21 controls the movement of the lower and upper parts of the first clamping assembly closer or further apart.

[0099] The second clamping assembly is connected to a second pressure plate 31 via a first connecting plate 22 and a second connecting plate 23. The two second pressure plates 31 are also used to clamp and move the nickel sheet. The upper second pressure plate 31 is equipped with a telescopic column 25 and a spring 26.

[0100] This application also proposes an automatic welding method for flexible nickel sheet connections without excess filler metal, comprising the following steps:

[0101] Place the spare nickel sheet flexible connectors onto the dual-station universal material handling device 32 and press the start button;

[0102] The unloading robot 33, equipped with a welding gripper device, moves to the product clamping position. The gripper cylinders 21 and 27 respectively clamp the flexible nickel sheet without excess material. The telescopic column 25 and the spring 26 clamp the flexible nickel sheet without excess material.

[0103] The fixed cylinder 3 drives the adjusting column 2 to retract, causing the product positioning structure to detach from the product;

[0104] The unloading robot 33 clamps the product and moves it to the welding machine 34 to be welded. A portion of the nickel sheets are pre-welded. The gripper cylinder 27 opens, the rodless cylinder 30 retracts, and the unloading robot 33 clamps the product and moves it to the nickel sheet welding position to perform secondary nickel sheet welding.

[0105] The material handling robot 35, equipped with a welding gripper device, moves to the material handling position of the welding machine 34. The gripper cylinder 21 clamps the product. After the welding machine 34 signals that the welding is completed, the product is cooled and unloaded.

[0106] After the picking robot 35 clamps the product, the unloading robot 33 opens the gripper cylinder 21 and gripper cylinder 27 and moves to the dual-station universal material handling device 32 to clamp the product. The unloading robot 33 will go to the station that gives the start signal to clamp the product.

[0107] The above parallel actions are executed cyclically.

[0108] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A flashless nickel strip bonding automatic welding apparatus, characterized by, The utility model relates to a welding device for soft connection nickel sheet, which comprises a general material arranging device (32) for positioning the soft connection nickel sheet, a welding clamp device for clamping the soft connection nickel sheet, and a welding device for welding the soft connection nickel sheet. The general material arranging device (32) comprises a support structure, a positioning structure arranged at the upper end of the support structure, and a lifting structure arranged inside the support structure. The positioning structure is used for positioning the soft connection nickel sheet, and the lifting structure is used for supporting the nickel sheet. The welding clamp device comprises a clamping mechanism and a clamping control mechanism for driving the clamping mechanism to clamp. The support structure comprises a bottom plate (1), two support plates (2) vertically connected to the bottom plate (1), a first fixed plate (5) fixedly connected to the top of the two support plates (2), a cushion plate (6, 16) fixedly connected to the upper surface of the first fixed plate (5), a lower die plate (7, 15) connected to the cushion plate (6, 16) and provided with a through hole for a guide pin (19) to pass through, two adjusting rods (8) connected to the same end of the lower die plate (7, 15), and two support rods (20) vertically connected to one side of the adjusting rod (8) facing the adjusting column (9) for supporting the nickel sheet from below. The lifting structure comprises a fixed cylinder (3) arranged between the two support plates (2) with the piston rod facing upward, a cylinder fixing plate (4) fixedly connected between the two support plates (2) for mounting the fixed cylinder (3), and a lifting nut (12) fixedly connected to the top of the piston rod of the fixed cylinder (3). The positioning structure comprises a positioning pin plate (11) connected to the lifting nut (12), a positioning pin cover plate (10) connected to the lower side of the positioning pin plate (11), four guide pins (19) distributed in a rectangular shape on the upper surface of the positioning pin plate (11) for guiding the lifting of the positioning pin plate (11), three adjusting supports (13) connected to the upper surface of the positioning pin plate (11) and located between the four guide pins (19), and an adjusting column (9) threadedly connected to the adjusting support (13) for controlling the height of the nickel sheet. The clamping control mechanism comprises a rodless cylinder (30) for connection with a mechanical arm, a second fixed plate (29) connected to the rodless cylinder (30) and driven by the rodless cylinder (30) to translate, and two clamp cylinder (21, 27) connected to the two sides of the second fixed plate (29) for controlling the clamping and loosening of the clamping mechanism. The clamping mechanism comprises a first clamping assembly and a second clamping assembly connected to the two clamp cylinder (21, 27), and the first clamping assembly and the second clamping assembly are the same in structure and move synchronously to clamp or loosen the nickel sheet. The first clamping assembly comprises two parts arranged oppositely in up and down directions. The first clamping assembly upper part is connected to the cylinder body of the clamp cylinder (21) and comprises a first connecting plate (22) connected to the cylinder body of the clamp cylinder (21), and a second connecting plate (23) connected to the first connecting plate (22). The first clamping assembly lower part is connected to the cylinder body of the clamp cylinder (27) and comprises a third connecting plate (24) connected to the cylinder body of the clamp cylinder (27), and a fourth connecting plate (25) connected to the third connecting plate (24). The second clamping assembly is the same in structure as the first clamping assembly. ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. A no-residue nickel strip soft connection automatic welding device according to claim 1, characterized in that, ​ ​ ​ ​ 3. A no-residue nickel strip soft connection automatic welding device according to claim 2, characterized in that, ​ 4. The no-residue nickel strip soft connection automatic welding device according to claim 3, characterized in that, ​ ​ ​ ​ The first pressing plate (24) is connected to the second connecting plate (23); The telescopic column (25) is connected to the side of the first pressing plate (24) facing the lower part of the first clamping assembly; and The elastic sheet (26) is connected to the end of the telescopic column (25) for abutting the nickel sheet; The first clamping assembly lower part is connected to the end of the piston rod of the clamping jaw cylinder (21), comprising: The first connecting plate (22) is connected to the end of the piston rod of the clamping jaw cylinder (21); The second connecting plate (23) is connected to the first connecting plate (22); and The first pressing plate (24) is connected to the second connecting plate (23).

5. A flush nickel strap bonding apparatus as claimed in any one of claims 1 to 4, wherein, The device is provided with a double-station universal material arranging device (32), a material placing robot (33) provided with a welding clamping jaw device, a welding machine (34), and a material taking robot (35) provided with a welding clamping jaw device.

6. The method of claim 5, wherein the method is characterized by: The steps include: The excess-free nickel sheet soft connection is placed on the double-station universal material arranging device (32), and the start button is pressed; The material placing robot (33) provided with the welding clamping jaw device moves to the clamped product position, the clamping jaw cylinder (21) and the clamping jaw cylinder (27) act respectively to clamp the excess-free nickel sheet soft connection, and the telescopic column (25) and the elastic sheet (26) clamp the excess-free nickel sheet soft connection; The fixed cylinder (3) drives the adjusting column (9) to retract, so that the product positioning structure is separated from the product; The material placing robot (33) clamps the product and moves to the welding machine (34) to be welded, pre-welds a part of the nickel sheet, the clamping jaw cylinder (27) is opened, the rodless cylinder (30) is retracted, the material placing robot (33) clamps the product and moves to the nickel sheet welding position, and secondary nickel sheet welding is performed; The material taking robot (35) provided with the welding clamping jaw device moves to the welding machine (34) to take the material, the clamping jaw cylinder (21) clamps the product, waits for the welding machine (34) to complete the signal, and cools and discharges the product; After the material taking robot (35) clamps the product, the material placing robot (33) opens the clamping jaw cylinder (21) and the clamping jaw cylinder (27), moves to the double-station universal material arranging device (32) to clamp the product, the double-station universal material arranging device (32) gives a start signal, and the material placing robot (33) clamps the product in the station; The above-mentioned combined action is cyclically executed.

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