A copper bar continuous processing device and method

Abstract

The present application belongs to copper bar processing technical field, especially to a kind of copper bar continuous processing device and method, including vertical cabinet, processing area is arranged on the vertical cabinet, welding mechanism and the fixing mechanism for copper bar fixation and transposition are arranged in processing area, and the lower side of processing area is fixedly provided with the isolating cover with opening upward, the connecting pipe connected with external vacuumizing equipment is arranged in one side of isolating cover.The present application can effectively support and limit the two long side of copper bar end in the process of welding and pressurizing, directly constrain the lateral plastic flow generated by copper bar under vertical pressure, ensure that the width of copper bar end meets the preset accuracy requirement, ensure the welding quality of soft copper bar end, set up the closed welding environment consisting of isolating cover and sealing plate, and cooperate with external vacuumizing equipment, eliminate the possibility of copper bar high-temperature surface contacting with oxygen to form oxide layer, avoid welding failure caused by oxidized inclusions.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of copper bar processing, and particularly relates to a copper bar continuous processing device and method. BACKGROUND

[0002] In the continuous processing production of soft copper bars, the existing process usually takes multi-layer copper foils as raw materials, stacks the copper foils according to specifications, places one end of the copper foils between upper and lower welding heads, adopts diffusion welding process to realize end head welding, and then completes the basic connection processing of the soft copper bar. However, the traditional processing mode has the following defects affecting the welding quality in actual application, as follows: 1) In the diffusion welding process, the upper and lower welding heads need to exert a vertical downward pressure on the multi-layer stacked copper foils to ensure the close adhesion and atomic diffusion conditions of the contact surface of the copper foils. However, the end head of the copper bar compressed by the welding head will not only be compressed downward, but also may diffuse to the side with smaller pressure. This lateral deformation will destroy the preset width accuracy of the end head of the copper bar, causing the end head of the copper bar to be too wide, directly affecting the quality of the welded joint.

[0003] 2) The existing process needs to weld the double-side end heads of the copper foils respectively: after completing the diffusion welding of one side end head of the copper bar, the position of the copper bar needs to be adjusted for secondary welding of the other side end head. In this process, the welded end head of the copper bar will be out of the constraint of the welding head pressure and enter the natural cooling state. Since there is a temperature gradient in the end head of the copper bar after welding, and the stress release is unbalanced due to the disappearance of the pressure, residual thermal stress will be formed in the end head of the copper bar as it cools. The thermal stress not only aggravates the deformation risk of the end head, but also may cause micro-cracks in the joint, further reducing the consistency and reliability of the welding quality.

[0004] 3) In the traditional processing, the whole soft copper bar is in a bare state, and the high-temperature surface of the copper foil is easy to have an oxidation reaction with oxygen in the air to form an oxide layer during the welding process. The core of diffusion welding is to rely on the sufficient diffusion of copper atoms on the contact surface to realize metallurgical bonding, and the oxide layer of the end head of the copper bar will directly block the diffusion channel between the atoms, causing the contact surface to fail to form effective welding; at the same time, the oxide layer may be pressed into the joint during the welding process, forming a brittle inclusion, greatly increasing the failure rate of diffusion welding and increasing the production rework cost.

[0005] In summary, there is an urgent need for a copper bar continuous processing device and method to solve the above-mentioned problems to ensure the welding quality of the soft copper bar. SUMMARY

[0006] In order to solve the above problems, the application provides a copper bar continuous processing device and method for solving the problems mentioned in the background art.

[0007] In order to achieve the above object, the embodiment of the present application provides the following technical scheme: the present application provides a copper bar continuous processing device, comprising a vertical cabinet, a processing area is arranged on the vertical cabinet, a welding mechanism and a fixing mechanism for fixing and transposition of the copper bar are arranged in the processing area, and an isolation cover with an upward opening is fixedly arranged on the lower side of the processing area, a connecting pipe connected with an external vacuumizing equipment is arranged on one side of the isolation cover, a sealing plate for sealing the upper port of the isolation cover is arranged on the welding mechanism, and a pressure maintaining mechanism is jointly arranged between the lower side of the sealing plate and the lower side of the processing area. The welding mechanism comprises a hydraulic rod fixedly connected with the upper side of the processing area, an upper welding head is fixedly arranged on the telescopic end of the hydraulic rod through a connecting column, a lower welding head is arranged below the upper welding head on the lower side of the processing area, a side blocking assembly is arranged on the base of the lower welding head, and a driving assembly is arranged on the base of the upper welding head. The pressure maintaining mechanism comprises a spring telescopic column fixedly arranged on the lower side of the sealing plate, and a supporting table corresponding to the spring telescopic column is fixedly arranged on the lower side of the processing area. The hydraulic rod drives the upper welding head to move close to the lower welding head to weld one end of the copper bar, at the same time, the sealing plate and the driving assembly move downward with the upper welding head, the sealing plate seals the isolation cover, and at the same time, the sealing plate moves downward to drive the spring telescopic column to move downward to maintain the pressure of the other end of the copper bar placed above the supporting table, and the driving assembly moves downward to push the side blocking assembly to adjust the position of the two long side edges of the end of the copper bar.

[0008] According to an advantageous embodiment, the connecting column is slidably inserted into the middle part of the sealing plate, and a circular plate is fixedly arranged on the connecting column, a spring one is fixedly arranged on the lower side of the circular plate and the upper side of the sealing plate, and the spring one is sleeved on the outer periphery of the connecting column.

[0009] According to an advantageous embodiment, the side blocking assembly comprises two vertical plates fixedly arranged on the base of the lower welding head and symmetrical in front and back, a rotating rod is rotatably arranged between the two vertical plates, torsional springs are arranged between the two ends of the rotating rod and the corresponding vertical plates, a U-shaped frame is fixedly arranged on the rotating rod, two adjusting screw rods one are rotatably arranged on the U-shaped frame and symmetrical in front and back, telescopic limiting plates are rotatably connected to the ends of the two adjusting screw rods one close to each other, two guide rods one are fixedly arranged on the sides of the two telescopic limiting plates away from each other, and the guide rods one are slidably inserted into the U-shaped frame.

[0010] According to an advantageous embodiment, the telescopic limiting plate comprises a main plate rotatably connected with the corresponding adjusting screw rod one, the main plate is fixedly connected with the two guide rods one, a sliding groove one is formed in the upper side of the main plate, a plurality of springs two are fixedly arranged in the sliding groove one, a secondary plate is fixedly connected to the upper ends of the plurality of springs two in the same sliding groove one, and the secondary plate is slidably connected with the corresponding main plate.

[0011] According to an advantageous embodiment, a second sliding groove is provided on the lower side of the base of the upper welding head, and the driving assembly includes a third spring fixedly disposed in the second sliding groove. A driving plate is fixedly connected to the lower end of the third spring. Two limiting posts that are symmetrically positioned front and back and are used to limit the rotation of the U-shaped frame are also fixedly disposed on the base of the lower welding head.

[0012] According to an advantageous embodiment, the fixing mechanism includes a U-shaped support plate that is rotatably disposed inside the isolation cover and is elongated. Each of the two vertical sides of the U-shaped support plate is rotatably provided with an adjusting screw. The ends of the two adjusting screws that are close to each other are rotatably connected to a fixed limiting plate. Each of the two fixed limiting plates that are opposite to each other is fixedly provided with two guide rods. The guide rods are slidably inserted into the corresponding vertical side of the U-shaped support plate.

[0013] According to an advantageous embodiment, spring telescopic rods are slidably inserted into the front and rear inner walls of both ends of the U-shaped support plate via lugs, and the lower ends of the two corresponding spring telescopic rods are fixedly connected to a locking plate.

[0014] According to an advantageous embodiment, the fixing mechanism further includes two arc-shaped guide seats and a drive motor fixedly disposed on the lower side of the processing area. A horizontal plate is fixedly connected to the side of the two arc-shaped guide seats that are close to each other. A rotating shaft is rotatably disposed on the horizontal plate through a bearing. The lower end of the rotating shaft is fixedly connected to the output shaft of the drive motor. A guide telescopic column is fixedly connected to the upper end of the rotating shaft. Two top support plates symmetrical about the axis of the guide telescopic column are fixedly disposed on the lower side of the U-shaped support plate. A guide wheel is rotatably disposed on the lower end of the top support plate. The first and last sections of the upper surface of the arc-shaped guide seat along the arc direction are both set as slope surfaces.

[0015] According to an advantageous embodiment, the guide telescopic column includes a sleeve fixedly connected to the upper end of the rotating shaft via a flange. A hexagonal slide column is slidably inserted into the upper end of the sleeve. The hexagonal slide column is fixedly connected to the lower side of the U-shaped support plate. An internal hexagonal guide groove is provided inside the sleeve. Each inner wall of the internal hexagonal guide groove is provided with a plurality of balls (not shown in the figure) evenly distributed along its length direction. Each facet of the hexagonal slide column is in rolling contact with the corresponding ball.

[0016] In addition, this solution also provides a continuous copper busbar processing method, which is completed by using the above-mentioned continuous copper busbar processing device, including the following steps: S1, feeding, the worker feeds the stacked copper busbars into the fixing mechanism, places them in the center and fixes them, so that the two ends of the copper busbars are placed on the support platform and the lower welding head respectively.

[0017] S2. Vacuuming: The hydraulic rod drives the upper welding head to approach the lower welding head and abut against the upper side of one end of the copper busbar. At this time, the sealing plate moves down with the upper welding head to seal the isolation cover. The isolation cover is connected to the external vacuuming equipment through the side connecting pipe to evacuate the inside of the isolation cover.

[0018] S3. Welding and pressure holding: The upper and lower welding heads work together to weld one end of the copper busbar. After welding, the pressure inside the isolation cover is released. After the upper welding head is reset, the copper busbar is moved by the fixing mechanism. The operation of step S2 is repeated. Then the other end of the copper busbar is welded again. At this time, the end of the copper busbar that was originally welded is pressure held by the pressure holding mechanism. After the other end of the copper busbar is welded, the pressure is held for a period of time by the upper and lower welding heads.

[0019] S4. Material Removal: After the upper welding head is reset by the hydraulic rod, the sealing plate separates from the isolation cover, the isolation cover is opened, and the copper busbar after welding is removed.

[0020] Compared with the prior art, the copper busbar continuous processing device and method provided in this invention have the following beneficial effects: 1. In this invention, by setting a side baffle assembly consisting of a U-shaped frame, an adjusting screw, and a telescopic limiting plate on the lower welding head base, and linking it with the driving assembly on the upper welding head, the two long sides of the copper busbar end can be automatically and effectively supported and limited during the welding pressurization process. This directly constrains the lateral plastic flow of the copper busbar under vertical pressure, ensuring that the width of the copper busbar end meets the preset accuracy requirements and ensuring the welding quality of the soft copper busbar end.

[0021] 2. In this invention, a pressure-holding mechanism consisting of a spring telescopic column and a support platform is provided, which works in conjunction with the repositioning function of the fixing mechanism to achieve continuous pressure holding of the copper busbar during the welding process at both ends.

[0022] 3. In this invention, a sealed welding environment consisting of an isolation cover and a sealing plate is set up, and in conjunction with external vacuum equipment, the air inside the isolation cover can be extracted before welding, creating a low-oxygen or oxygen-free welding environment. This fundamentally eliminates the possibility of the copper busbar's high-temperature surface coming into contact with oxygen to form an oxide layer, avoids welding failure caused by oxide inclusions, significantly reduces rework and scrap due to substandard joint quality, and thus effectively controls production costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external three-dimensional structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the front view of the present invention.

[0025] Figure 3 This is a schematic diagram of the external three-dimensional structure of the isolation cover and welding mechanism in this invention.

[0026] Figure 4 This is a schematic diagram of the external three-dimensional structure of the fixing mechanism and the welding mechanism in this invention.

[0027] Figure 5 This is a schematic diagram of the upper welding head in the present invention when it is idle.

[0028] Figure 6 This is a schematic diagram showing the state of the copper busbar during the downward movement of the upper welding head in this invention.

[0029] Figure 7 This is a three-dimensional structural diagram of the side guard assembly in this invention.

[0030] The attached diagram shows the following labels: 1. Vertical cabinet; 2. Processing area; 3. Welding mechanism; 31. Hydraulic rod; 32. Connecting column; 33. Upper welding head; 34. Lower welding head; 35. Side baffle assembly; 351. Vertical plate; 352. Rotating rod; 353. U-shaped frame; 354. Adjusting screw one; 355. Telescopic limit plate; 36. Drive assembly; 361. Drive plate; 4. Fixing mechanism; 41. U-shaped support plate; 42. Adjusting screw two; 43. Fixed limit plate; 44. Spring telescopic rod; 45. Locking plate; 46. Arc-shaped guide seat; 47. Drive motor; 48. Guide telescopic column; 49. Top support plate; 410. Guide wheel; 5. Isolation cover; 6. Sealing plate; 7. Pressure holding mechanism; 71. Spring telescopic column; 72. Support platform; 8. Circular plate; 9. Spring one; 10. Limit column; 11. Copper busbar. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will now be described in further detail.

[0032] Please refer to the following: Figure 1 , Figure 2 and Figure 4 A continuous copper busbar processing device is disclosed for welding the two ends of a soft copper busbar 11. The processing device includes a vertical cabinet 1, a processing area 2 on the vertical cabinet 1, a welding mechanism 3 and a fixing mechanism 4 for fixing and repositioning the copper busbar 11 in the processing area 2, and an upward-opening isolation cover 5 fixedly installed on the lower side of the processing area 2. The isolation cover 5 is equipped with glass observation windows on all four sides, and a connecting pipe for connecting to an external vacuum device is provided on one side of the isolation cover 5. A sealing plate 6 is provided on the welding mechanism 3 to seal the upper end of the isolation cover 5, and a pressure holding mechanism 7 is provided between the lower side of the sealing plate 6 and the lower side of the processing area 2.

[0033] In practice, the copper busbar 11 is fed into the isolation cover 5 from the upper port and fixed by the fixing mechanism 4, so that one end of the copper busbar 11 is placed on the welding mechanism 3 and the other end is placed on the pressure holding mechanism 7. The welding mechanism 3 drives the sealing plate 6 to seal the isolation cover 5. The connecting pipe on the isolation cover 5 is evacuated through an external vacuum pump. Then the welding mechanism 3 welds the ends of the copper busbar 11. The welding mechanism 3 first welds one end of the copper busbar 11. After completion, the fixing mechanism 4 drives the copper busbar 11 to rotate and move, so that the unwelded end is transferred to the welding station. While the welding mechanism 3 is welding the unwelded end of the copper busbar 11, the welded end of the copper busbar 11 can be continuously pressured by the pressure holding mechanism 7. After the welding mechanism 3 has also finished welding the other end of the copper busbar 11, the welding mechanism 3 can also keep one end of the copper busbar 11 under pressure, while the other end is still kept under pressure by the pressure holding mechanism 7. After a period of time, the copper busbar 11 can be removed from the isolation cover 5.

[0034] See Figure 2 and Figure 3 The welding mechanism 3 includes a hydraulic rod 31 fixedly connected to the upper side of the processing area 2. An upper welding head 33 is fixedly mounted on the telescopic end of the hydraulic rod 31 via a connecting column 32. A lower welding head 34 is located directly below the upper welding head 33 on the lower side of the processing area 2. A side-stop assembly 35 is mounted on the base of the lower welding head 34, and a drive assembly 36 is mounted on the base of the upper welding head 33. The extension of the hydraulic rod 31 causes the upper welding head 33 to move downwards, and the drive assembly 36 follows the upper welding head 33 downwards, thus cooperating with the side-stop assembly 35 to limit the movement of the two long sides of the copper busbar 11 placed on the lower welding head 34.

[0035] See Figure 3 To avoid the influence of oxygen in the air on the welding of the copper busbar 11 ends, the connecting post 32 is slidably inserted into the middle of the sealing plate 6, and a circular plate 8 is fixedly installed on the connecting post 32. A spring 9 is fixedly installed on the lower side of the circular plate 8 and the upper side of the sealing plate 6, and the spring 9 is sleeved on the outer periphery of the connecting post 32. The upper port of the isolation cover 5 and the lower edge of the sealing plate 6 are both chamfered to fit each other, and a sealing strip is provided at the connection between the upper port of the isolation cover 5 and the lower side of the sealing plate 6. A sealing strip is also provided at the sliding connection between the connecting post 32 and the sealing plate 6 (not shown in the figure). The spring 9 ensures that the sealing plate 6 contacts the upper port of the isolation cover 5 before the upper welding head 33, avoiding premature contact of the upper welding head 33 with the copper busbar 11 and thus ensuring the airtightness of the sealed space.

[0036] In actual operation, when the hydraulic rod 31 moves the upper welding head 33 downward via the connecting column 32, it simultaneously moves the sealing plate 6 downward. The sealing plate 6 can seal the upper port of the isolation cover 5, thus forming a sealed space inside the isolation cover 5. Figure 6As shown. At the same time, the connecting pipe on the side of the isolation cover 5 can be connected to an external vacuum equipment to perform vacuuming, extracting the air from the sealed space, effectively reducing the oxygen content in the welding environment, thereby avoiding the problem of reduced welding quality caused by high-temperature oxidation of the copper busbar 11 end, and improving the welding quality of the copper busbar 11.

[0037] See Figure 3 and Figure 4 To prevent the two long sides of the copper busbar 11 from spreading outward under vertical pressure, the side baffle assembly 35 includes two symmetrical upright plates 351 fixedly mounted on the base of the lower welding head 34. A rotating rod 352 is rotatably mounted between the two upright plates 351. Torsion springs (not shown in the figure) are installed between the two ends of the rotating rod 352 and the corresponding upright plates 351. A U-shaped frame 353 is fixedly mounted on the rotating rod 352. Two symmetrical adjusting screws 354 are rotatably mounted on the U-shaped frame 353. A telescopic limiting plate 355 is rotatably connected to the end of each adjusting screw 354 that is close to each other. Two guide rods are fixedly mounted on the opposite side of each telescopic limiting plate 355. The guide rods are slidably inserted into the U-shaped frame 353. The operator can adjust the distance between the two telescopic limiting plates 355 by rotating the adjusting screws 354 to accommodate copper busbars 11 of different widths.

[0038] In actual operation, under normal conditions, the U-shaped frame 353 is in a tilted and raised state via the torsion spring on the rotating rod 352, such as... Figure 4 and Figure 5 As shown. This causes the two telescopic limiting plates 355 to separate from the upper end face of the lower welding head 34. When the upper welding head 33 moves downward, it can drive the drive assembly 36 to move downward. The drive assembly 36 can push the U-shaped frame 353 to rotate before the upper welding head 33 abuts against the upper side of one end of the copper busbar 11, so that the U-shaped frame 353 can be horizontally attached to the upper end face of the lower welding head 34. At this time, the two telescopic limiting plates 355 are respectively located on the outer side of the corresponding long side of one end of the copper busbar 11, as shown. Figure 6 As shown. During the subsequent diffusion welding process where the upper welding head 33 applies pressure to one end of the copper busbar 11, the telescopic limiting plate 355 consistently supports and limits the long side of one end of the copper busbar 11, restricting its outward diffusion and preventing excessive deviation between the welded end width and the preset width, thus further improving the welding quality of the copper busbar 11 end. After welding is completed, as the upper welding head 33 moves upward and resets, the U-shaped frame 353, under the action of the torsion spring, drives the telescopic limiting plate 355 to reset, preventing motion interference caused by the rotation and repositioning of the copper busbar 11.

[0039] See Figure 4 and Figure 7To ensure that the telescopic limiting plate 355 adapts to the height of the copper busbar 11 and does not interfere with the downward movement of the upper welding head 33, the telescopic limiting plate 355 includes a main plate rotatably connected to the corresponding adjusting screw 354. The main plate is fixedly connected to the two corresponding guide rods, and a sliding groove is provided on the upper side of the main plate. Multiple springs (not shown in the figure) are fixedly installed in the sliding groove. The upper ends of the multiple springs in the same sliding groove are fixedly connected to a secondary plate, which is slidably connected to the corresponding main plate. When the upper welding head 33 moves down a certain distance, it will abut against the upper side of the secondary plate and push the secondary plate to compress the springs, shortening the overall height of the telescopic limiting plate 355.

[0040] It should be noted that although the main board and the sub-board of the telescopic limiting plate 355 are not flush with the long side of the copper busbar 11, the height difference is minimal and will not affect the supporting and limiting function of the long side of the copper busbar 11. In addition, both the main board and the sub-board are made of high temperature resistant, high rigidity and will not stick to the copper busbar 11, the upper welding head 33 and the lower welding head 34.

[0041] See Figure 5 and Figure 6 The upper welding head 33 has a groove 2 on its lower base. The drive assembly 36 includes a spring 3 (not shown in the figure) fixedly installed in the groove 2. The lower end of the spring 3 is fixedly connected to a drive plate 361. The base of the lower welding head 34 is also fixedly provided with two symmetrically positioned limiting posts 10 for limiting the rotation of the U-shaped frame 353. The drive plate 361 moves down with the upper welding head 33 and abuts against the upper side of the U-shaped frame 353 that is raised below. Then it pushes the U-shaped frame 353 to rotate around the rotating rod 352, so that the U-shaped frame 353 is horizontal while its lower side abuts against the upper side of the limiting posts 10. At the same time, the lower side of the main plate in the telescopic limiting plate 355 abuts against the upper end face of the lower welding head 34.

[0042] It should be noted that after the drive plate 361 moves down and pushes the U-shaped frame 353 to rotate to the horizontal, there is still a certain compression stroke between the drive plate 361 and the spring 3, which ensures that the drive plate 361 can slide relative to the upper welding head 33 and avoids interfering with the downward movement of the upper welding head 33.

[0043] See Figures 2-6 To prevent the copper busbar 11 from losing pressure completely during repositioning after welding, the pressure-holding mechanism 7 includes a spring telescopic column 71 fixedly installed on the lower side of the sealing plate 6, and a support platform 72 corresponding to the spring telescopic column 71 is fixedly installed on the lower side of the processing area 2. The telescopic end of the spring telescopic column 71 presses the copper busbar 11 downward, forming a pressure-holding space together with the support platform 72.

[0044] During operation, one end of the copper busbar 11 is positioned between the upper welding head 33 and the lower welding head 34 during welding, while the other end is positioned between the upper surface of the support platform 72 and the lower surface of the telescopic end of the spring telescopic column 71. The spring telescopic column 71 is in a compressed state, exerting pressure on the unwelded end of the copper busbar 11. After welding is completed at one end of the copper busbar 11, the copper busbar 11 is repositioned via the fixing mechanism 4, transferring the welded end of the copper busbar 11 to the area between the upper surface of the support platform 72 and the lower surface of the spring telescopic column 71 for pressure maintenance. Simultaneously, the other end of the copper busbar 11 is welded via the upper welding head 33 and the lower welding head 34. After welding is completed at the other end of the copper busbar 11, the upper welding head 33 and the lower welding head 34 stop working, and the hydraulic rod 31 continuously outputs pressure to maintain pressure. The repositioning of the copper busbar 11 is generally completed within a short period of 3-5 seconds, with only a very short period of pressure loss before pressure is maintained again via the pressure maintaining mechanism 7. The pressure-holding mechanism 7 can minimize the impact of natural cooling of the welded ends of the copper busbar 11 under pressure loss on the welding quality.

[0045] It should be noted that the pressure value of the spring telescopic column 71 on the end of the copper busbar 11 has been repeatedly tested by those skilled in the art to ensure that the pressure of the spring telescopic column 71 can achieve a good pressure-holding effect on the welded end of the copper busbar 11. Furthermore, the pressure-holding strength of the spring telescopic column 71 can be ensured through regular maintenance or replacement.

[0046] See Figure 3 and Figure 4 The fixing mechanism 4 includes a long, U-shaped support plate 41 rotatably mounted inside the isolation cover 5. Two adjusting screws 42 are rotatably mounted on each of the two vertical sides of the U-shaped support plate 41. Fixed limiting plates 43 are rotatably connected to the ends of the two adjusting screws 42 that are close to each other. Two guide rods 42 are fixedly mounted on the opposite sides of the two fixed limiting plates 43, and these guide rods are slidably inserted into the corresponding vertical sides of the U-shaped support plate 41. Operators can rotate the adjusting screws 42 to control the sliding of the fixed limiting plates 43 within the U-shaped support plate 41, adjusting the distance between the two fixed limiting plates 43 to accommodate the width of the copper busbar 11 and limit the movement of the copper busbar 11 placed within the U-shaped support plate 41.

[0047] See Figure 4 Spring telescopic rods 44 are slidably inserted into the front and rear inner walls of both ends of the U-shaped support plate 41 via lugs. The lower ends of the two corresponding spring telescopic rods 44 are fixedly connected to locking plates 45. After the copper busbar 11 is placed inside the U-shaped support plate 41, the locking plates 45 are driven by the spring telescopic rods 44 to press the copper busbar 11 tightly. The spring telescopic rods 44 are in a pre-compressed state. In their natural state, the locking plates 45 can be driven to move downward by the elastic restoring force, tightly pressing the upper surface of the copper busbar 11 without the need for additional power.

[0048] See Figure 2 andFigure 4 To facilitate the rotation and repositioning of the copper busbar 11, the fixing mechanism 4 also includes two arc-shaped guide seats 46 and a drive motor 47 fixedly installed on the lower side of the processing area 2. A horizontal plate is fixedly connected to the side of the two arc-shaped guide seats 46 that are close to each other. A rotating shaft is rotatably installed on the horizontal plate through a bearing. The lower end of the rotating shaft is fixedly connected to the output shaft of the drive motor 47. A guide telescopic column 48 is fixedly connected to the upper end of the rotating shaft. Two top support plates 49 are fixedly installed on the lower side of the U-shaped support plate 41, symmetrical about the axis of the guide telescopic column 48. A guide wheel 410 is rotatably installed at the lower end of the top support plate 49. The first and last sections of the upper surface of the arc-shaped guide seat 46 along the arc direction are both set as slopes. The two slopes on each arc-shaped guide seat 46 are divided into an upper slope and a lower slope.

[0049] See Figure 4 The guide telescopic column 48 includes a sleeve fixedly connected to the upper end of the rotating shaft via a flange. A hexagonal slide column is slidably inserted into the upper end of the sleeve, and the hexagonal slide column is fixedly connected to the lower side of the U-shaped support plate 41. An internal hexagonal guide groove is provided inside the sleeve, and multiple ball bearings (not shown in the figure) are evenly distributed along the length of each inner wall of the internal hexagonal guide groove. Each facet of the hexagonal slide column is in rolling contact with the corresponding ball bearing. The guide telescopic column 48 achieves the lifting and rotation of the U-shaped support plate 41 through the sliding connection between the hexagonal slide column and the sleeve. The ball bearings reduce the sliding friction between the hexagonal slide column and the internal hexagonal guide groove of the sleeve, preventing friction jamming from affecting the smoothness of the lifting and rotation of the U-shaped support plate.

[0050] In practice, after one end of the copper busbar 11 is welded, the drive motor 47 drives the rotating shaft to rotate, which in turn drives the guide telescopic column 48 to rotate. The overall rotation of the guide telescopic column 48 drives the U-shaped support plate 41 to rotate, which in turn drives the copper busbar 11 to rotate. During the rotation of the copper busbar 11, the top support plate 49 rotates along with the U-shaped support plate 41. When the guide wheel 410 at the lower end of the top support plate 49 contacts the slope surface of the arc-shaped guide seat 46, the two guide wheels 410 will gradually climb up along the upper slope surface of the arc-shaped guide seat 46, causing the U-shaped support plate 41 to rise, so that the copper busbar 11 is much higher than the upper surface of the support platform 72 and the lower welding head 34. When both ends of the copper busbar 11 reach the top of the support platform 72 or the lower welding head 34, the guide wheels 410 roll on the lower slope surface of the arc-shaped guide seat 46, so that the copper busbar 11 returns to its original height, ensuring that the ends of the copper busbar 11 will not interfere with the movement of the support platform 72 or the lower welding head 34 during the transfer process. At the same time, ensure that one end of the copper busbar 11 is in contact with the upper surface of the lower welding head 34, and the other end is in contact with the upper surface of the support platform 72.

[0051] In addition, this solution also provides a continuous copper busbar processing method, which is completed by using the above-mentioned continuous copper busbar processing device, including the following steps: S1, feeding, the operator feeds the copper busbar 11 composed of multiple copper foils stacked together into the U-shaped support plate 41, places it in the center and fixes it, so that the two ends of the copper busbar 11 are placed on the support platform 72 and the lower welding head 34 respectively.

[0052] S2. Vacuuming: The hydraulic rod 31 drives the upper welding head 33 to approach the lower welding head 34 and abut against the upper side of one end of the copper busbar 11. At this time, the sealing plate 6 moves down with the upper welding head 33 to seal the isolation cover 5. Simultaneously, the two telescopic limiting plates 355 are aligned by the drive plate 361, supporting and limiting the two long sides of one end of the copper busbar 11. Then, the isolation cover 5 is connected to an external vacuuming device through the side connecting pipe to evacuate the inside of the isolation cover 5.

[0053] S3. Welding and pressure holding: The upper welding head 33 and the lower welding head 34 cooperate to weld one end of the copper busbar 11. After welding, the pressure inside the isolation cover 5 is released, the upper welding head 33 moves upward to reset, the telescopic limit plate 355 resets, and then the drive motor 47 controls the U-shaped support plate 41 to rotate 180° to change the position of the copper busbar 11. Then repeat the action of step S2 to weld the other end of the copper busbar 11 again. At this time, the end of the copper busbar 11 that was originally welded is under pressure between the support platform 72 and the spring telescopic column 71. At this time, the spring telescopic column 71 is in a compressed state, and the elastic force applies continuous pressure to the welded end of the copper busbar 11. The pressure value matches the required pressure holding strength after welding. After the other end of the copper busbar 11 is welded, the upper welding head 33 and the lower welding head 34 continue to hold the pressure for a period of time.

[0054] S4. After the copper busbar 11 is pressurized at both ends, the upper welding head 33 is reset by the hydraulic rod 31, the sealing plate 6 is separated from the isolation cover 5, the isolation cover 5 is opened, and the welded copper busbar 11 is taken out.

[0055] In this design, a side baffle assembly 35, consisting of a U-shaped frame 353, an adjusting screw 354, and a telescopic limiting plate 355, is installed on the base of the lower welding head 34. This assembly is linked with the drive assembly 36 on the upper welding head 33. During the welding pressurization process, this assembly automatically and effectively supports and limits the two long sides of the copper busbar 11 end. This design directly constrains the lateral plastic flow of the copper busbar 11 under vertical pressure, preventing deformation defects such as excessive width or bulging after welding. This ensures that the width of the copper busbar 11 end meets the preset accuracy requirements, thereby improving product consistency and yield.

[0056] By setting up a pressure-holding mechanism 7 consisting of a spring telescopic column 71 and a support platform 72, and cooperating with the repositioning function of the fixing mechanism 4, "seamless pressure holding" is achieved during the welding process at both ends of the copper busbar 11. Once one end is welded and repositioned, the pressure-holding mechanism 7 immediately takes over and continuously applies pressure, avoiding stress imbalance and natural cooling caused by complete pressure loss during the critical cooling stage. This mechanism effectively suppresses the generation of residual thermal stress, reduces the risk of microcrack formation, and ensures that both welded joints form a dense and reliable metallurgical bond, thereby improving the overall mechanical properties and long-term reliability of the product.

[0057] By designing a sealed welding environment consisting of an isolation chamber 5, a sealing plate 6, and a vacuum system, air can be extracted from the operating chamber before welding, creating a low-oxygen or oxygen-free welding environment. This fundamentally eliminates the possibility of the copper busbar 11 coming into contact with oxygen and forming an oxide layer, ensuring that copper atoms can diffuse fully and purely at the contact surface, achieving high-quality metallurgical bonding. Simultaneously, it avoids welding failures caused by oxide inclusions, significantly reducing rework and scrap due to substandard joint quality, thereby effectively controlling production costs.

[0058] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0059] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A continuous copper busbar processing device, comprising a vertical cabinet, characterized in that: The vertical cabinet is provided with a processing area, which is equipped with a welding mechanism and a fixing mechanism for fixing and repositioning copper busbars. An upward-opening isolation cover is fixedly installed on the lower side of the processing area. A connecting pipe for connecting to an external vacuuming device is provided on one side of the isolation cover. The welding mechanism is equipped with a sealing plate for sealing the upper port of the isolation cover. A pressure holding mechanism is provided between the lower side of the sealing plate and the lower side of the processing area. The welding mechanism includes a hydraulic rod fixedly connected to the upper side of the processing area. An upper welding head is fixedly installed at the telescopic end of the hydraulic rod through a connecting column. A lower welding head is installed on the lower side of the processing area directly below the upper welding head. A side baffle assembly is installed on the base of the lower welding head, and a drive assembly is installed on the base of the upper welding head. The pressure holding mechanism includes a spring telescopic column fixedly installed on the lower side of the sealing plate, and a support platform corresponding to the spring telescopic column is fixedly installed on the lower side of the processing area. The hydraulic rod drives the upper welding head to approach the lower welding head to weld one end of the copper busbar. At the same time, the sealing plate and the drive assembly move down with the upper welding head. The sealing plate seals the isolation cover, and as the sealing plate moves down, it drives the spring telescopic column to move down to maintain pressure on the other end of the copper busbar placed above the support platform. The drive assembly moves down to push the side stop assembly to be aligned and limit the two long sides of the copper busbar end. The side baffle assembly includes two upright plates fixedly mounted on the lower welding head base and symmetrically arranged front and back. A rotating rod is rotatably mounted between the two upright plates. A torsion spring is installed between each end of the rotating rod and the corresponding upright plate. A U-shaped frame is fixedly mounted on the rotating rod. Two adjusting screws are rotatably mounted on the U-shaped frame and symmetrically arranged front and back. A telescopic limiting plate is rotatably connected to the end of the two adjusting screws that are close to each other. Two guide rods are fixedly mounted on the side of the two telescopic limiting plates that are opposite to each other. The guide rods are slidably inserted into the U-shaped frame. The telescopic limiting plate includes a main board that is rotatably connected to the corresponding adjusting screw, the main board that is fixedly connected to the two corresponding guide rods, and a sliding groove is provided on the upper side of the main board. Multiple springs are fixedly installed in the sliding groove. The upper ends of the multiple springs in the same sliding groove are fixedly connected to a sub-plate, and the sub-plate is slidably connected to the corresponding main board. The base of the upper welding head has a sliding groove 2 on the lower side. The driving assembly includes a spring 3 fixedly installed in the sliding groove 2. The lower end of the spring 3 is fixedly connected to a driving plate. The base of the lower welding head is also fixedly provided with two limiting posts that are symmetrical in front and behind for limiting the rotation of the U-shaped frame. The fixing mechanism includes a U-shaped support plate that is rotatably installed inside the isolation cover and is in the shape of a long strip. Each of the two vertical sides of the U-shaped support plate is rotatably provided with an adjusting screw. The ends of the two adjusting screws that are close to each other are rotatably connected to a fixed limiting plate. Each of the two fixed limiting plates that are opposite to each other is fixedly provided with two guide rods. The guide rods are slidably inserted into the corresponding vertical side of the U-shaped support plate. Spring telescopic rods are slidably inserted into the front and rear inner walls of both ends of the U-shaped support plate via ear seats, and the lower ends of the two corresponding spring telescopic rods are fixedly connected to a locking plate. The fixing mechanism also includes two arc-shaped guide seats and a drive motor fixedly installed on the lower side of the processing area. A horizontal plate is fixedly connected to the side of the two arc-shaped guide seats that are close to each other. A rotating shaft is rotatably installed on the horizontal plate through a bearing. The lower end of the rotating shaft is fixedly connected to the output shaft of the drive motor. A guide telescopic column is fixedly connected to the upper end of the rotating shaft. Two top support plates symmetrical about the axis of the guide telescopic column are fixedly installed on the lower side of the U-shaped support plate. A guide wheel is rotatably installed at the lower end of the top support plate. The first and last sections of the upper surface of the arc-shaped guide seat along the arc direction are both set as slope surfaces.

2. The continuous copper busbar processing device according to claim 1, characterized in that, The connecting column is slidably inserted into the middle of the sealing plate, and a circular plate is fixedly installed on the connecting column. A spring is fixedly installed on the lower side of the circular plate and the upper side of the sealing plate, and the spring is sleeved on the outer periphery of the connecting column.

3. The continuous copper busbar processing device according to claim 2, characterized in that, The guide telescopic column includes a sleeve that is fixedly connected to the upper end of the rotating shaft via a flange. A hexagonal slide column is slidably inserted into the upper end of the sleeve. The hexagonal slide column is fixedly connected to the lower side of the U-shaped support plate. An internal hexagonal guide groove is provided inside the sleeve. Multiple balls are evenly distributed along the length direction on each inner wall of the internal hexagonal guide groove. Each facet of the hexagonal slide column is in rolling connection with the corresponding ball.

4. A method for continuous processing of copper busbars, characterized in that, The process, performed using the continuous copper busbar processing apparatus as described in claim 1, includes the following steps: S1. Loading: The workers feed the stacked copper busbars into the fixing mechanism, place them in the center and fix them, so that the two ends of the copper busbars are placed on the support platform and the lower welding head respectively. S2. Vacuuming: The hydraulic rod drives the upper welding head to approach the lower welding head and abut against the upper side of one end of the copper busbar. At this time, the sealing plate moves down with the upper welding head to seal the isolation cover. The isolation cover is connected to the external vacuuming equipment through the side connecting pipe to evacuate the inside of the isolation cover. S3. Welding and pressure holding: The upper and lower welding heads work together to weld one end of the copper busbar. After welding, the pressure inside the isolation cover is released. After the upper welding head is reset, the copper busbar is moved through the fixing mechanism. The operation of step S2 is repeated. Then the other end of the copper busbar is welded again. At this time, the end of the copper busbar that was originally welded is pressure held by the pressure holding mechanism. After the other end of the copper busbar is welded, the pressure is held for a period of time by the upper and lower welding heads. S4. Material Removal: After the upper welding head is reset by the hydraulic rod, the sealing plate separates from the isolation cover, the isolation cover is opened, and the copper busbar after welding is removed.

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