Lead-acid storage battery welding fixing device and welding method

Abstract

The invention relates to the field of switching boxes, in particular to a lead-acid storage battery welding fixing device and a welding method.The lead-acid storage battery welding fixing device comprises a welding fixing frame, a lifting frame is fixedly installed on the lower portion of the interior of the welding fixing frame, a telescopic air cylinder is fixedly installed outside the lifting frame, and a top contact frame is fixedly installed at the top of the telescopic air cylinder; a rotating groove is formed in the outer portion of the top contact frame, and a rotating gear is rotationally connected into the rotating groove. The lead-acid storage battery is placed on the pushing plate, the inclined clamping plates and the bottom supporting plate are matched with the side fixing plates under the gravity influence of the lead-acid storage battery to fix the three faces of the lead-acid storage battery, and then the lead-acid storage battery with the three faces fixed abuts against the center abutting plate under the driving of the pushing plate. And after the lead-acid storage battery is fixed, the lead-acid storage battery on the welding table is pushed to the welding position on the welding fixing frame through the telescopic air cylinder.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lead-acid battery welding, in particular to a lead-acid battery welding fixing device and a welding method. BACKGROUND

[0002] The lead-acid battery is an acid battery with dilute sulfuric acid as electrolyte and lead dioxide as positive electrode and sponge lead as negative electrode, and its single cell rated voltage is 2V, which can form a 6V or 12V battery pack by series connection, and is widely used in the fields of automobiles, energy storage, communication base stations and the like. Lead-acid battery welding is a process of connecting the internal components such as the tab, lead bridge and terminal of the battery together by heating or pressing, the purpose of which is to ensure the correct assembly of the positive and negative plates and the isolation plate of the plate group, to realize the stability of electrical connection, to prevent disconnection during use and to ensure the stability of the battery in vibration and long-term use, and the lead-acid battery welding fixing device is used to fix the battery parts, ensure the welding precision and safety, prevent position deviation during welding, improve the welding quality, and can assist the welding operation and improve the production efficiency.

[0003] The existing lead-acid battery welding fixing device lacks the ability of automatic clamping and precise welding during use, and manual adjustment of the fixture position and confirmation of the clamping force are required, which is time-consuming and dependent on the experience of workers, and cannot meet the needs of mass production, and the tab sheet needs to be positioned separately before welding, and multiple adjustments may lead to prolonged production rhythm and low equipment utilization, so that the welding precision of the lead-acid battery welding fixing device is poor and the scrap rate is high after long-term use.

[0004] Therefore, it is necessary to invent a lead-acid battery welding fixing device and a welding method to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide a lead-acid battery welding fixing device and a welding method, which realizes rapid positioning of four clamping by gravity triggering linkage clamping, without manual adjustment of the fixture and automatic closing of the center contact plate, shortens the preparation period, and cooperates with the linkage mechanism of gear and rack to automatically fit the electrode, seamlessly connects the welding action, and greatly optimizes the production rhythm, to solve the problems in the prior art that the existing lead-acid battery welding fixing device lacks the ability of automatic clamping and precise welding during use, manual adjustment of the fixture position and confirmation of the clamping force are required, which is time-consuming and dependent on the experience of workers, cannot meet the needs of mass production, the tab sheet needs to be positioned separately before welding, multiple adjustments may lead to prolonged production rhythm and low equipment utilization, the welding precision of the lead-acid battery welding fixing device is poor after long-term use, and the scrap rate is high.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a lead-acid storage battery welding fixing device, comprising a welding fixing frame, characterized in that: a lifting frame is fixedly installed inside the lower part of the welding fixing frame, a telescopic air cylinder is fixedly installed outside the lifting frame, a top contact frame is fixedly installed at the top end of the telescopic air cylinder, a rotating groove is formed in the outside of the top contact frame, a rotating gear is rotatably connected inside the rotating groove, a welding table is fixedly installed at the top of the top contact frame, a center contact plate is fixedly installed on the upper center surface of the welding table, sliding grooves are formed on both sides of the upper part of the welding table, sliding blocks are slidably connected inside the sliding grooves, and a pushing plate is fixedly installed on the upper part of the sliding blocks; A side fixing plate is fixedly installed on the upper outer side of the pushing plate, inclined clamping grooves are formed on the outer sides of the side fixing plate, and inclined push rods are slidably connected inside the inclined clamping grooves. A welding positioning frame is fixedly installed on the upper part of the welding fixing frame, inner sliding grooves are formed on both sides of the inside of the welding positioning frame, inner sliding blocks are slidably connected inside the inner sliding grooves, a lower rack is fixedly installed at the bottom of the inner sliding blocks, a bearing frame is fixedly installed at the front outside of the inner sliding blocks, a double-head clamping frame is fixedly installed at the bottom of the bearing frame, fixed bolts are threadedly penetrated into the outer sides of both ends of the double-head clamping frame, clamping heads are threadedly connected to the front ends of the fixed bolts, and tab pieces are placed inside the clamping heads.

[0007] Preferably, a movable rod is rotatably connected to the upper end of the lifting frame, pushing gears are fixedly installed at both ends of the movable rod, rack cylinders are fixedly installed on both sides of the inside of the welding fixing frame, a round rod rack is slidably connected inside the rack cylinder, the round rod rack is meshingly connected with the pushing gears, and the top end of the round rod rack is fixedly connected with the bottom of the welding table.

[0008] Preferably, a pushing through groove is formed on the upper part of the welding table, a motor support is fixedly installed at the bottom of the welding table, a servo motor is fixedly installed inside the motor support, a center gear is fixedly installed at the output end of the servo motor, a pushing rack is meshingly connected to the outside of the center gear, and a pushing through block is fixedly installed on the upper part of the pushing rack.

[0009] Preferably, the pushing through block is inlaid inside the pushing through groove, the top of the pushing through block is fixedly connected with the bottom of the pushing plate, outer limiting strips are fixedly installed on both sides of the bottom of the welding table, the center gear is rotatably connected with the bottom of the welding table, the pushing rack is slidably connected with the bottom of the welding table, and the groove formed on the bottom of the welding table is used to limit the left and right sliding tracks of the pushing rack.

[0010] Preferably, a bottom supporting rod is slidably connected to the lower part of the outside of the pushing plate, and a bottom supporting plate is fixedly installed at the rear end of the bottom supporting rod.

[0011] Preferably, a first nitrogen spring is fixedly installed on the lower back of the side fixing plate, a crossbar is fixedly installed on the top of the first nitrogen spring, a clamping and pushing plate is fixedly installed on the outside of the crossbar, connecting rods are hinged to the outer sides of the clamping and pushing plate, and a connecting plate is hinged to the upper end of the connecting rod.

[0012] Preferably, the outer side of the crossbar is fixedly connected to the front end of the inclined push rod, and the front end of the inclined push rod is fixedly connected to the outer side of the connecting plate.

[0013] Preferably, the lower rack is sleeved inside the welding fixing frame, the lower rack is meshed with the rotating gear, and a second nitrogen spring is fixedly installed at the bottom of the inner slide groove, the top of the second nitrogen spring being fixedly connected to the outer bottom of the inner slider.

[0014] Preferably, a resistance welding machine is fixedly installed on the top of the support frame, and cables are fixedly connected to the outside of the resistance welding machine. An inner fixing block is fixedly installed inside the support frame, and a resistance welding gun is fixedly installed inside the inner fixing block. The top end of the resistance welding gun is fixedly connected to the other end of the cable.

[0015] A method for welding lead-acid batteries, including a lead-acid battery welding and fixing device as described above, wherein the specific processing steps are as follows: Step 1: Place the lead-acid battery to be welded onto the push plate of the welding table. The lead-acid battery slides down against the side fixing plate. Under the influence of gravity, the lead-acid battery slides down through the bottom support plate and the bottom support rod. The crossbar connected to the front end of the bottom support rod presses the first nitrogen spring and slides down again. The crossbar pulls the inclined push rod through the hinge, so that the inclined clamping plate fixes the lead-acid battery on the push plate and the side fixing plate, thus fixing it on three sides. Step 2: Start the servo motor so that the central gear meshes with the push racks on both sides. By sliding the push racks, the push block is driven so that the push plate moves the fixed lead-acid battery toward the central contact plate, completing the fourth side fixation and clamping the lead-acid battery before welding. Step 3: After completing Step 1 and Step 2, the welding table is raised by the telescopic cylinder. During the lifting of the welding table, the external motor drives the rotating gear to rotate. The second nitrogen spring, which is normally located inside the inner groove of the welding positioning frame, can support the support frame to continue to slide down. After the rotating gear meshes with the lower rack inside the welding positioning frame.

[0016] Step 4: The rising and rotating gear causes the lower rack to slide downwards. The lower rack applies a downward force to the inner slider, which simultaneously compresses the second nitrogen spring. This causes the inner slider to slide the support frame down on the welding positioning frame. As the lead-acid battery fixed on the push plate rises, the lower rack, through its linkage, causes the tabs mounted on the double-headed clamping frame below the support frame to also adhere to the electrodes of the lead-acid battery. At this point, the resistance welding gun on the support frame, which is attached to the tabs, can be activated to directly weld the tabs to the lead-acid battery.

[0017] Compared with the prior art, the technical effects and advantages provided by the present invention in the above technical solution are as follows: By placing a lead-acid battery on the push plate, the inclined clamping plate and the bottom support plate, along with the side fixing plate, fix the lead-acid battery on three sides due to its gravity. Then, driven by the push plate, the lead-acid battery, fixed on three sides, comes into contact with the central contact plate, thus completing the four-sided clamping of the lead-acid battery. After fixing the lead-acid battery, the lead-acid battery on the welding table is pushed to the welding position on the welding fixing frame by a telescopic cylinder. Due to the meshing transmission of the upward rotating gear and the lower rack, the bearing frame and the double-headed clamping frame descend synchronously during the upward movement of the lead-acid battery, allowing the electrode tabs to fit against the electrodes of the lead-acid battery, and then directly starting... The resistance welding gun on the moving electrode tab completes the welding and fixing of the lead-acid battery. This combination gives the device the ability to automatically clamp and weld precisely. This fully automated design significantly improves efficiency. Gravity-triggered linkage clamping eliminates the need for manual adjustment of the clamps, reducing operation steps and time. It also automatically moves towards the central contact plate to achieve rapid positioning with four-sided clamping, shortening the preparation cycle. Combined with the gear and rack linkage mechanism, it automatically fits the electrodes, and the welding action is seamlessly connected, greatly optimizing the production cycle. With long-term use, the clamping accuracy is high and the welding quality is stable. At the same time, the automated design reduces human intervention and improves operational safety. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the telescopic cylinder structure of the present invention; Figure 3 This is a schematic diagram of the rack cylinder structure of the present invention; Figure 4This is a schematic diagram of the push plate structure of the present invention; Figure 5 This is a schematic diagram of the central gear structure of the present invention; Figure 6 This is a schematic diagram of the side fixing plate structure of the present invention; Figure 7 This is a schematic diagram of the first nitrogen spring structure of the present invention; Figure 8 This is a schematic diagram of the welding positioning frame structure of the present invention; Figure 9 This is a schematic diagram of the support frame structure of the present invention; Figure 10 This is a schematic diagram of the double-headed clamping frame structure of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Welding fixing frame; 2. Lifting frame; 201. Movable rod; 202. Pushing gear; 3. Telescopic cylinder; 4. Top contact frame; 401. Rotating groove; 402. Rotating gear; 5. Welding table; 6. Rack cylinder; 7. Round rod rack; 8. Center contact plate; 9. Sliding groove; 10. Sliding block; 11. Pushing plate; 12. Pushing through groove; 13. Motor bracket; 14. Servo motor; 15. Center gear; 16. Pushing rack; 17. Pushing through block; 18. Outer limit bar; 19. Side fixing plate; 1901. Angled clamping groove; 1902. Angled push rod; 1903, Inclined clamping plate; 1904, Bottom support rod; 1905, Bottom support plate; 20, First nitrogen spring; 2001, Crossbar; 2002, Clamping and pushing plate; 2003, Connecting rod; 2004, Connecting pull plate; 21, Welding positioning frame; 22, Inner slide groove; 2201, Second nitrogen spring; 23, Inner slider; 24, Lower rack; 25, Bearing frame; 2501, Resistance welding machine; 2502, Cable; 2503, Inner fixing block; 2504, Resistance welding gun; 26, Double-headed clamping frame; 27, Fixing bolt; 28, Clamping head; 29, Electrode lug. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] This invention provides, for example Figures 1-10The lead-acid battery welding and fixing device shown includes a welding fixing frame 1, a lifting frame 2 fixedly installed inside the lower part of the welding fixing frame 1, a telescopic cylinder 3 fixedly installed outside the lifting frame 2, a top contact frame 4 fixedly installed at the top of the telescopic cylinder 3, a rotating groove 401 opened on the outside of the top contact frame 4, a rotating gear 402 rotatably connected inside the rotating groove 401, a welding table 5 fixedly installed on the top of the top contact frame 4, a center contact plate 8 fixedly installed on the upper center surface of the welding table 5, sliding grooves 9 opened on both sides above the welding table 5, sliding blocks 10 slidably connected inside the sliding grooves 9, and a pusher plate 11 fixedly installed above the sliding blocks 10. By using the telescopic cylinder 3 to lift the welding table 5, the welding table 5 and the welding fixture 1 can be interlocked, allowing the lead-acid battery on the welding table 5 to reach the predetermined welding position on the welding fixture 1, thereby speeding up the welding process.

[0023] A side fixing plate 19 is fixedly installed on the upper outer side of the push plate 11. An inclined clamping groove 1901 is opened on both sides of the outer side of the side fixing plate 19. An inclined push rod 1902 is slidably connected inside the inclined clamping groove 1901. An inclined clamping plate 1903 is fixedly installed at the rear end of the inclined push rod 1902. By placing a lead-acid battery on the push plate 11, the inclined clamp 1903 slides on the side fixing plate 19 under the influence of the weight of the lead-acid battery, thereby completing the three-sided fixing of the lead-acid battery.

[0024] A welding positioning frame 21 is fixedly installed on the top of the welding fixing frame 1. The welding positioning frame 21 has inner sliding grooves 22 on both sides inside. An inner slider 23 is slidably connected inside the inner sliding grooves 22. A lower rack 24 is fixedly installed at the bottom of the inner slider 23. A bearing frame 25 is fixedly installed at the front of the inner slider 23. A double-headed clamping frame 26 is fixedly installed at the bottom of the bearing frame 25. Fixing bolts 27 are threaded through both ends of the double-headed clamping frame 26. A clamping head 28 is threaded to the front end of the fixing bolts 27. An electrode lug 29 is placed inside the clamping head 28.

[0025] The lead-acid battery on the welding table 5 is pushed by the telescopic cylinder 3 to the welding position on the welding fixture 1. Due to the meshing transmission between the rising rotating gear 402 and the lower rack 24, the synchronous linkage of the bearing frame 25 and the double-headed clamping frame 26 is lowered during the rising process of the lead-acid battery, so that the tabs 29 are attached to the electrodes of the lead-acid battery.

[0026] Furthermore, in the above technical solution, the upper end of the lifting frame 2 is rotatably connected to a movable rod 201, and the two ends of the movable rod 201 are fixedly installed with push gears 202. The inside sides of the welding fixing frame 1 are fixedly installed with rack cylinders 6, and the inside of the rack cylinders 6 is slidably connected with round rod racks 7. The round rod racks 7 are meshed with the push gears 202, and the top end of the round rod racks 7 is fixedly connected to the bottom of the welding table 5.

[0027] The high efficiency of the transmission through the meshing of the round rod rack 7 and the push gear 202 can assist the telescopic cylinder 3 in steadily pushing the welding table 5 and the welding fixture 1 together.

[0028] Furthermore, in the above technical solution, a push passage groove 12 is provided above the welding table 5, a motor bracket 13 is fixedly installed at the bottom of the welding table 5, a servo motor 14 is fixedly installed inside the motor bracket 13, a central gear 15 is fixedly installed at the output end of the servo motor 14, a push rack 16 is meshed with the outside of the central gear 15, and a push block 17 is fixedly installed above the push rack 16.

[0029] Furthermore, in the above technical solution, the push block 17 is embedded inside the push groove 12, the top of the push block 17 is fixedly connected to the bottom of the push plate 11, the bottom sides of the welding table 5 are fixedly installed with outer limit strips 18, the central gear 15 is rotatably connected to the bottom of the welding table 5, the push rack 16 is slidably connected to the bottom of the welding table 5, and the groove opened at the bottom of the welding table 5 is used to limit the left and right sliding trajectory of the push rack 16.

[0030] By pushing the rack 16 and the central gear 15 to mesh with each other, the lead-acid battery, which is fixed on three sides, is pushed by the push plate 11 and moves toward the central contact plate 8 of the welding table 5.

[0031] Furthermore, in the above technical solution, a bottom support rod 1904 is slidably connected to the lower outer side of the push plate 11, and a bottom support plate 1905 is fixedly installed at the rear end of the bottom support rod 1904.

[0032] Furthermore, in the above technical solution, a first nitrogen spring 20 is fixedly installed on the lower back of the side fixing plate 19, a crossbar 2001 is fixedly installed on the top of the first nitrogen spring 20, a clamping and pushing plate 2002 is fixedly installed on the outside of the crossbar 2001, a connecting rod 2003 is hinged to the outer sides of the clamping and pushing plate 2002, and a connecting plate 2004 is hinged to the upper end of the connecting rod 2003.

[0033] Furthermore, in the above technical solution, the outside of the crossbar 2001 is fixedly connected to the front end of the inclined push rod 1902, and the front end of the inclined push rod 1902 is fixedly connected to the outside of the connecting plate 2004.

[0034] By placing a lead-acid battery on the push plate 11, the inclined clamping plate 1903 and the bottom support plate 1905, under the influence of the weight of the lead-acid battery, work together with the side fixing plate 19 to complete the three-sided fixing and clamping of the lead-acid battery.

[0035] Furthermore, in the above technical solution, the lower rack 24 is sleeved inside the welding fixing frame 1, the lower rack 24 is meshed with the rotating gear 402, and the bottom of the inner slide groove 22 is fixedly installed with a second nitrogen spring 2201, the top of the second nitrogen spring 2201 is fixedly connected to the bottom of the outer side of the inner slider 23.

[0036] Furthermore, in the above technical solution, a resistance welding machine 2501 is fixedly installed above the support frame 25, and cables 2502 are fixedly connected to the outside of the resistance welding machine 2501. An inner fixing block 2503 is fixedly installed inside the support frame 25, and a resistance welding gun 2504 is fixedly installed inside the inner fixing block 2503. The top end of the resistance welding gun 2504 is fixedly connected to the other end of the cable 2502.

[0037] When the welding table 5 rises, it drives the rotating gear 402 to mesh with the lower rack 24, so that during the rise of the lead-acid battery, the support frame 25 and the double-headed clamping frame 26 descend synchronously, allowing the tabs 29 to adhere to the electrodes of the lead-acid battery. Then, the resistance welding gun 2504 on the tabs 29 is directly activated, thereby completing the welding and fixing of the lead-acid battery.

[0038] A method for welding lead-acid batteries, including the lead-acid battery welding and fixing device as described above, and the specific processing steps are as follows: Step 1: Place the lead-acid battery to be welded onto the push plate 11 of the welding table 5. The lead-acid battery slides down against the side fixing plate 19. Under the influence of gravity, the lead-acid battery slides down through the bottom support plate 1905 and the bottom support rod 1904. The crossbar 2001 connected to the front end of the bottom support rod 1904 presses the first nitrogen spring 20 and slides down. The crossbar 2001 pulls the inclined push rod 1902 through the hinge, so that the inclined clamping plate 1903 fixes the lead-acid battery on the push plate 11 and the side fixing plate 19, and fixes it on three sides. Step 2: Start the servo motor 14 so that the central gear 15 meshes with the push racks 16 on both sides. By sliding the push racks 16, the push block 17 is driven so that the push plate 11 moves the fixed lead-acid battery toward the central contact plate 8, completing the fourth side fixation and clamping the lead-acid battery before welding. Step 3: After completing Step 1 and Step 2, the welding table 5 is raised by the telescopic cylinder 3. During the process of raising the welding table 5, the external motor drives the rotating gear 402 to rotate. The second nitrogen spring 2201, which is normally located inside the inner slide groove 22 of the welding positioning frame 21, can support the support frame 25 to continue to slide down. After the rotating gear 402 meshes with the lower rack 24 inside the welding positioning frame 21.

[0039] Step 4: The rising and rotating gear 402 causes the lower rack 24 to slide downwards. The lower rack 24 applies a downward force to the inner slider 23, which simultaneously compresses the second nitrogen spring 2201. This causes the inner slider 23 to drive the support frame 25 to slide and continue to descend on the welding positioning frame 21. In this way, after the lead-acid battery fixed on the push plate 11 rises, the lower rack 24 will also cause the tabs 29 mounted on the double-headed clamping frame 26 below the support frame 25 to be attached to the electrodes of the lead-acid battery. At this time, the resistance welding gun 2504 attached to the tabs 29 on the support frame 25 is activated, and the tabs 29 can be directly welded to the lead-acid battery.

[0040] Working principle of this invention: Refer to the instruction manual appendix Figure 1 - Figure 10When using this lead-acid battery welding and fixing device, first connect the external power supply, take out the lead-acid battery and the tab 29 to be welded, first turn the fixing bolt 27 to open the clamping head 28 parallel to the double-headed clamping frame 26, place the tab 29 between the clamping head 28 and the double-headed clamping frame 26, so that the resistance welding gun 2504 touches the top of the tab 29, then tighten the fixing bolt 27 to fix the tab 29 through the clamping head 28, then place the lead-acid battery contact side fixing plate 19 vertically on the push plate 11. As the lead-acid battery slides down, the bottom support plate 1905 drives the bottom support rod 1904 to slide down synchronously. The crossbar 2001 connected to the front end of the bottom support rod 1904 synchronously presses the first nitrogen spring 20 and then slides down. 2001 causes the clamping push plate 2002 to slide downwards at an angle within the inclined clamping groove 1901 via the hinged connecting rod 2003, driving the connecting plate 2004 and the inclined push rod 1902. The inclined push rod 1902, in conjunction with the inclined clamping plate 1903, secures the lead-acid battery to the push plate 11 and the side fixing plate 19, achieving three-sided fixation. Then, the switch of the servo motor 14 on the motor bracket 13 can be turned on, causing the servo motor 14 to drive the central gear 15 to rotate. This allows the central gear 15 to mesh with the push racks 16 on both sides, which in turn drive the push block 17 to slide within the push groove 12. This causes the push plate 11 to move the fixed lead-acid battery towards the central contact plate 8, completing the fourth-sided fixation, thus completing the process. Before welding the lead-acid battery, clamp it in place. After this preparation, start the telescopic cylinder 3. The telescopic cylinder 3 will lift the welding table 5. During this lifting process, the telescopic cylinder 3 will lift the welding table 5, simultaneously pulling the round rod rack 7 inside the rack cylinder 6. The round rod rack 7 engages with the push gear 202 through the external notch. Together with the telescopic cylinder 3, it can stably lift the welding table 5. Then, during the lifting process, the telescopic cylinder 3 will push the lead-acid battery on the welding table 5 to the welding position on the welding fixture 1. Start the external motor of the rotating slot 401, causing the rotating gear 402 to rotate first. This will cause the telescopic cylinder 3 to lift the rotating gear 402 and engage it with the lower rack 24, thus lifting and rotating the gear. The rotating gear 402 meshes with the lower rack 24, which in turn applies a downward force to the inner slider 23, simultaneously compressing the second nitrogen spring 2201. This causes the inner slider 23 to slide the support frame 25 down the welding positioning frame 21. As the lead-acid battery rises, the support frame 25 and the double-headed clamping frame 26 descend synchronously, allowing the tabs 29 to adhere to the leads-acid battery electrodes. Then, the resistance welding gun 2504 on the tabs 29 can be directly activated, completing the welding and fixing of the lead-acid battery. This gives the device the ability to automatically clamp and precisely weld. This fully automated design significantly improves efficiency. Gravity-triggered clamping eliminates the need for manual adjustment of the clamps, reducing operation steps and time.Furthermore, the automatic alignment with the central contact plate 8 enables rapid positioning and four-sided clamping, shortening the preparation cycle. Combined with the gear and rack linkage mechanism, it automatically adheres to the electrode, ensuring seamless welding operations and significantly optimizing the production cycle.

[0041] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lead-acid battery welding and fixing device, comprising a welding fixing frame (1), characterized in that: A lifting frame (2) is fixedly installed inside the lower part of the welding fixing frame (1). A telescopic cylinder (3) is fixedly installed outside the lifting frame (2). A top contact frame (4) is fixedly installed at the top of the telescopic cylinder (3). A rotating groove (401) is opened on the outside of the top contact frame (4). A rotating gear (402) is rotatably connected inside the rotating groove (401). A welding table (5) is fixedly installed on the top of the top contact frame (4). A center contact plate (8) is fixedly installed on the upper center surface of the welding table (5). Sliding grooves (9) are opened on both sides above the welding table (5). A sliding block (10) is slidably connected inside the sliding groove (9). A pusher plate (11) is fixedly installed above the sliding block (10). A side fixing plate (19) is fixedly installed on the upper outer side of the push plate (11). An inclined clamping groove (1901) is opened on both sides of the outer side of the side fixing plate (19). An inclined push rod (1902) is slidably connected inside the inclined clamping groove (1901). An inclined clamping plate (1903) is fixedly installed at the rear end of the inclined push rod (1902). A welding positioning frame (21) is fixedly installed above the welding fixing frame (1). The welding positioning frame (21) has an inner sliding groove (22) on both sides. An inner slider (23) is slidably connected inside the inner sliding groove (22). A lower rack (24) is fixedly installed at the bottom of the inner slider (23). A bearing frame (25) is fixedly installed at the front of the inner slider (23). A double-headed clamping frame (26) is fixedly installed at the bottom of the bearing frame (25). Fixing bolts (27) are threaded through both ends of the double-headed clamping frame (26). A clamping head (28) is threaded at the front end of the fixing bolt (27). An electrode lug (29) is placed inside the clamping head (28).

2. The lead-acid battery welding and fixing device according to claim 1, characterized in that: The upper end of the lifting frame (2) is rotatably connected to a movable rod (201), and the two ends of the movable rod (201) are fixedly installed with push gears (202). The inside sides of the welding fixing frame (1) are fixedly installed with rack cylinders (6), and the inside of the rack cylinders (6) is slidably connected with round rod racks (7). The round rod racks (7) are meshed with the push gears (202), and the top of the round rod racks (7) is fixedly connected to the bottom of the welding table (5).

3. The lead-acid battery welding and fixing device according to claim 1, characterized in that: A pusher slot (12) is provided above the welding table (5). A motor bracket (13) is fixedly installed at the bottom of the welding table (5). A servo motor (14) is fixedly installed inside the motor bracket (13). A central gear (15) is fixedly installed at the output end of the servo motor (14). A pusher rack (16) is meshed with the outside of the central gear (15). A pusher block (17) is fixedly installed above the pusher rack (16).

4. The lead-acid battery welding and fixing device according to claim 3, characterized in that: The push block (17) is embedded inside the push groove (12). The top of the push block (17) is fixedly connected to the bottom of the push plate (11). The bottom sides of the welding table (5) are fixedly installed with outer limit strips (18). The central gear (15) is rotatably connected to the bottom of the welding table (5). The push rack (16) is slidably connected to the bottom of the welding table (5). The groove opened at the bottom of the welding table (5) is used to limit the left and right sliding trajectory of the push rack (16).

5. The lead-acid battery welding and fixing device according to claim 1, characterized in that: A bottom support rod (1904) is slidably connected to the lower outer side of the push plate (11), and a bottom support plate (1905) is fixedly installed at the rear end of the bottom support rod (1904).

6. The lead-acid battery welding and fixing device according to claim 1, characterized in that: A first nitrogen spring (20) is fixedly installed on the lower back of the side fixing plate (19). A crossbar (2001) is fixedly installed on the top of the first nitrogen spring (20). A clamping and pushing plate (2002) is fixedly installed on the outside of the crossbar (2001). A connecting rod (2003) is hinged on both sides of the outside of the clamping and pushing plate (2002). A connecting plate (2004) is hinged to the upper end of the connecting rod (2003).

7. The lead-acid battery welding and fixing device according to claim 6, characterized in that: The outside of the crossbar (2001) is fixedly connected to the front end of the inclined push rod (1902), and the front end of the inclined push rod (1902) is fixedly connected to the outside of the connecting plate (2004).

8. The lead-acid battery welding and fixing device according to claim 1, characterized in that: The lower rack (24) is fitted inside the welding fixture (1). The lower rack (24) is meshed with the rotating gear (402). A second nitrogen spring (2201) is fixedly installed at the bottom of the inner slide groove (22). The top of the second nitrogen spring (2201) is fixedly connected to the bottom of the outer side of the inner slider (23).

9. A lead-acid battery welding and fixing device according to claim 1, characterized in that: A resistance welding machine (2501) is fixedly installed on the top of the support frame (25). Cables (2502) are fixedly connected to the outside of the resistance welding machine (2501). An inner fixing block (2503) is fixedly installed inside the support frame (25). A resistance welding gun (2504) is fixedly installed inside the inner fixing block (2503). The top end of the resistance welding gun (2504) is fixedly connected to the other end of the cable (2502).

10. A method for welding a lead-acid battery, comprising a lead-acid battery welding and fixing device as described in any one of claims 1-9, characterized in that: The specific processing steps are as follows: Step 1: Place the lead-acid battery to be welded onto the push plate (11) of the welding table (5). The lead-acid battery slides down against the side fixing plate (19). Under the influence of gravity, the lead-acid battery drives the bottom support rod (1904) to slide down through the bottom support plate (1905). The crossbar (2001) connected to the front end of the bottom support rod (1904) simultaneously presses the first nitrogen spring (20) and slides down. The crossbar (2001) pulls the inclined push rod (1902) through the hinge, so that the inclined clamping plate (1903) fixes the lead-acid battery on the push plate (11) and the side fixing plate (19) for three-sided fixation. Step 2: Start the servo motor (14) so ​​that the central gear (15) meshes with the push racks (16) on both sides. By sliding the push racks (16), the push block (17) is driven so that the push plate (11) moves the fixed lead-acid battery toward the central contact plate (8) to complete the fourth side fixing and clamp the lead-acid battery before welding. Step 3: After completing Step 1 and Step 2, the welding table (5) is raised by the telescopic cylinder (3). During the process of raising the welding table (5), the external motor drives the rotating gear (402) to rotate. The second nitrogen spring (2201), which is normally located inside the inner slide groove (22) of the welding positioning frame (21), can support the support frame (25) to continue to slide down. After the rotating gear (402) meshes with the lower rack (24) inside the welding positioning frame (21); Step 4: The rising and rotating gear (402) causes the lower rack (24) to slide downwards. The lower rack (24) applies a downward force to the inner slider (23) to simultaneously compress the second nitrogen spring (2201), so that the inner slider (23) drives the support frame (25) to slide and continue to descend on the welding positioning frame (21). In this way, after the lead-acid battery fixed on the push plate (11) rises, through the linkage of the lower rack (24), the tabs (29) installed on the double-head clamping frame (26) below the support frame (25) are also attached to the electrodes of the lead-acid battery. At this time, the resistance welding gun (2504) attached to the tabs (29) on the support frame (25) is started, and the tabs (29) and the lead-acid battery can be directly welded.

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