Cast-weld device and cast-weld method for lead storage battery

Abstract

The invention discloses a cast-welding device and a cast-welding method for a lead storage battery, and the cast-welding device for the lead storage battery realizes green upgrading of a cast-welding process through an innovative infrared heating and automatic transfer system. Compared with the traditional technology that the cast-weld bottom die needs to be immersed in an open lead smelting furnace for high-temperature heating, the method has the advantages that the upper row of infrared heating pipes and the lower row of infrared heating pipes are adopted for carrying out surrounding type precise temperature control on the cast-weld bottom die, the heating temperature is uniform, the heating speed is high, the die temperature is controllable, and lead slag and lead smoke pollution generated by high-temperature oxidation of the open lead smelting furnace is more thoroughly eliminated; and clean production of a production line is realized. The closed-loop transfer system composed of the mechanical arm and the sliding rail is matched with the quantitative flow guide design of the molten lead adding mechanism, so that molten lead is accurately injected into the cast-weld cavity from the closed lead pan through the switch valve, molten lead sputtering waste caused by movement of a bottom die in a traditional process is avoided, and the utilization rate of raw materials is increased. The whole device achieves parallel operation of multiple bottom dies through modular design, and the production efficiency of a production line is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of lead-acid battery casting and welding, and particularly relates to a lead-acid battery casting and welding device and a casting and welding method. BACKGROUND

[0002] In recent years, with the rapid development of the new energy industry, the diversification of products, and the increasingly fierce market competition, the lead-acid battery industry must innovate in production line process equipment technology, and achieve the comprehensive performance of energy saving, consumption reduction, quality improvement, and cost reduction.

[0003] The assembly line battery casting and welding is an important link in battery manufacturing. The existing small and dense assembly production line is configured with six casting and welding machines, with a single line capacity of 12000 per day. The casting and welding machine is a lead pot hot mold casting and welding, and adopts a configuration of one machine and one pot. The mold heating method is to immerse the mold into the lead liquid for heating, which causes high energy consumption of the production line, high lead smoke emission, high lead slag rate, and low raw material utilization rate.

[0004] For example, the invention with the publication number CN111069573A discloses a lead-acid battery casting and welding device, which comprises a translation plate, a first scraper and a second scraper are arranged on the translation plate, the second scraper is arranged below the translation plate in a lifting manner, when the casting and welding bottom mold is immersed in the lead liquid of the lead pot, the second scraper is lowered and horizontally moves with the translation plate to scrape the dross on the surface of the lead liquid to one side, and is reset before the casting and welding bottom mold is lifted above the lead pot.

[0005] For example, the invention with the publication number CN112222379A discloses a lead-acid battery casting and welding machine and a casting and welding method thereof. The slot driving mechanism is arranged below the lifting driving mechanism and is used to move the battery pole group. The turnover mechanism is arranged on one side of the slot driving mechanism and is used to turn over the battery pole group. The thimble driving mechanism is arranged on the other side of the slot driving mechanism and is used to clamp the battery pole group. The casting and welding mold is arranged below the slot driving mechanism and is driven by the lifting driving mechanism. The lifting driving mechanism, the slot driving mechanism, and the thimble driving mechanism are connected through the support mechanism, and the support mechanism is arranged on the lead pot. SUMMARY

[0006] The present application provides a lead-acid battery casting and welding device and a casting and welding method to solve the problems of large amount of lead smoke generated in casting and welding work, high energy consumption, and low raw material utilization rate.

[0007] A lead-acid battery casting and welding device, comprising: a support, an infrared heating station, a lead liquid adding station, and a casting and welding station are sequentially arranged on the support;

[0008] A casting and welding bottom mold, comprising at least one, the top surface of the casting and welding bottom mold has a casting and welding cavity;

[0009] An infrared heating mechanism is arranged in the infrared heating station and used for heating the casting and welding bottom mold;

[0010] A lead liquid adding mechanism is arranged in the lead liquid adding station and used for adding lead liquid into the casting and welding cavity;

[0011] A casting and welding mechanism is arranged in the casting and welding station and used for extending the lug on the inverted battery into the casting and welding cavity and forming the bus bar and the terminal pole by casting and welding;

[0012] A transfer mechanism is used for transferring the casting and welding bottom mold between the stations.

[0013] Preferably, the infrared heating mechanism comprises two rows of infrared heating pipes arranged above and below, and a gap is arranged between the two rows of infrared heating pipes for the casting and welding bottom mold to pass through, the two rows of infrared heating pipes form a symmetrical heating structure, the gap is used for the casting and welding bottom mold to pass through, 360° surrounding heating is realized, the temperature uniformity of the casting and welding bottom mold is ensured, and the temperature control precision is high.

[0014] Preferably, support blocks are arranged on both sides of the casting and welding bottom mold, and a sliding groove is arranged on the support block;

[0015] The transfer mechanism comprises: a first sliding rail arranged on both sides of the infrared heating station, the lead liquid adding station and the casting and welding station, the casting and welding bottom mold is slidably connected with the first sliding rail through the sliding groove on the support block; a first driving unit is used for driving the casting and welding bottom mold to move along the first sliding rail; and a mechanical hand is used for transferring the casting and welding bottom mold located at the casting and welding station after one casting and welding to the upstream end of the infrared heating station.

[0016] Further, the mechanical hand comprises: a second sliding rail arranged above the infrared heating station, the lead liquid adding station and the casting and welding station;

[0017] A mechanical hand base is provided with a sliding groove matched with the second sliding rail, a lifting arm and a lifting driving unit driving the lifting arm to lift are further arranged on the mechanical hand base, a pair of horizontal moving grippers and a cylinder driving the horizontal moving grippers to grab or release the casting and welding bottom mold are arranged at the bottom of the lifting arm;

[0018] A second driving unit is used for driving the mechanical hand base to move along the second sliding rail.

[0019] Further, support blocks are arranged on both sides of the casting and welding bottom mold, and a support position is arranged on the support block;

[0020] The first driving unit comprises a first driving base and a first linear rack arranged in parallel with the first slide rail; the first driving unit further comprises a first gear engaged with the first linear rack, and the first driving base is provided with a first gear driving motor for driving the first gear to rotate; the first driving base is further provided with a supporting cylinder, and the end of the piston rod of the supporting cylinder extends into the supporting position when the piston rod extends out;

[0021] The second driving unit comprises a second linear rack arranged in parallel with the second slide rail; the second driving unit further comprises a second gear engaged with the second linear rack, and the mechanical arm base is provided with a second gear driving motor for driving the second gear to rotate.

[0022] The sliding groove on the supporting block cooperates with the first slide rail in the transfer mechanism to realize the accurate linear movement of the bottom mold between the stations, and to ensure the alignment accuracy of the lead liquid adding and the casting and welding process. The sliding groove structure reduces the transfer friction resistance, cooperates with the first driving unit (gear and rack transmission), and improves the production rhythm to 12-15 seconds / station, realizing the continuous production of battery casting and welding.

[0023] In addition, the lifting arm + horizontal gripper structure realizes the vertical grabbing and releasing of the bottom mold, and fully automatic transfer replaces manual operation, reduces the labor cost, and avoids the health risk of the operating personnel in the high temperature environment.

[0024] Preferably, the lead liquid adding mechanism comprises:

[0025] A lead pot for containing lead liquid;

[0026] A lead liquid taking unit comprising a first lead liquid adding base and a second lead liquid adding base, the bracket is provided with a first horizontal cylinder for driving the first lead liquid adding base to move horizontally, the first lead liquid adding base is provided with a first vertical cylinder for driving the second lead liquid adding base to move vertically, and the lower portion of the second lead liquid adding base is further provided with a lead liquid cup with an opening on the bottom surface; the second lead liquid adding base is further provided with a switch member for controlling the opening and closing of the opening on the bottom surface of the lead liquid cup.

[0027] The bracket is further provided with a first horizontal slide rail, the first lead liquid adding base is provided with a sliding groove, the first lead liquid adding base is slidably connected with the first horizontal slide rail through the sliding groove, and moves horizontally; the first lead liquid adding base and the second lead liquid adding base are connected through a guide rod, and the first vertical cylinder drives the second lead liquid adding base to move vertically through the guide rod.

[0028] Further, the lead liquid adding mechanism further comprises a lead liquid adding flow guide member, and the lead liquid adding flow guide member is provided with a flow guide opening, the upper opening of the flow guide opening is a horn opening, and the lower opening corresponds to a group of casting and welding cavities on the casting and welding bottom mold.

[0029] On the one hand, the lead melting furnace is eliminated, and a lead molten metal adding mechanism is installed. This mechanism is controlled separately from the heating temperature control of the casting mold, ensuring precise temperature control for both components and solving the problems of excessive lead fumes and high energy consumption during casting. On the other hand, the lead molten metal adding mechanism is equipped with a switch. When the mechanism moves, the switch opens to automatically add lead; when the mechanism stops moving, the switch closes. The lead molten metal cup has enough capacity to cast at least one casting mold. Both ends of the lead molten metal adding mechanism are equipped with clamping adjustment screws to adjust the distance between the mechanism and the casting mold.

[0030] Preferably, the casting and welding mechanism includes:

[0031] A cooling tank is located on the side of the casting and welding station near the lead liquid adding mechanism. The top surface of the cooling tank is open, and when cooling the bottom mold of the casting and welding, the top surface opening of the cooling tank faces the bottom surface of the bottom mold of the casting and welding.

[0032] A placement plate, wherein the placement plate is provided with a placement opening for placing a lead-acid battery to be cast and welded upside down on the placement plate;

[0033] The cast-welded base includes two cylinders respectively disposed on both sides of the placement plate, and the cast-welded base is provided with a second vertical cylinder for driving the placement plate to move vertically;

[0034] The second horizontal cylinder, mounted on the bracket, is used to drive the cast-welded base to move horizontally.

[0035] It enables the cooling and casting / welding processes to be carried out simultaneously, improving the efficiency of single-line production.

[0036] The present invention also provides a method for casting and welding lead-acid batteries, comprising the following steps:

[0037] S1, The bottom mold for casting and welding is heated using an infrared heating method, wherein the top surface of the bottom mold for casting and welding has a casting and welding cavity;

[0038] S2, Add molten lead to the casting cavity;

[0039] S3, the tabs on the inverted lead-acid battery are inserted into the casting and welding cavity and cast and welded to form a busbar and terminal post.

[0040] Preferably, the lead-acid battery casting and welding device described above is used.

[0041] This invention relates to a lead-acid battery casting and welding device, which achieves a green upgrade of the casting and welding process through an innovative infrared heating and automated transfer system. Compared to the traditional method of immersing the casting mold in an open lead melting furnace for high-temperature heating, this invention uses two rows of infrared heating tubes to precisely control the temperature of the casting mold in a surrounding manner. This results in uniform heating, rapid heating, and controllable mold temperature, and completely eliminates lead slag and lead fume pollution caused by high-temperature oxidation in open lead melting furnaces, achieving clean production on the production line. A closed-loop transfer system consisting of a robotic arm and slide rails, combined with a quantitative flow design for the lead liquid addition mechanism, allows for precise injection of lead liquid from a sealed lead pot into the casting cavity via a switch valve. This avoids lead liquid splashing and waste caused by mold movement in traditional processes, improving raw material utilization. The entire device uses a modular design to enable parallel operation of multiple molds, further improving production line efficiency. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the lead-acid battery casting and welding device in the production line according to the present invention;

[0043] Figure 2 This is a schematic diagram of the lead-acid battery casting and welding device of the present invention;

[0044] Figure 3 This is a front view of the lead-acid battery casting and welding device of the present invention;

[0045] Figure 4 This is a schematic diagram of the lead-acid battery casting and welding device after removing the infrared heating mechanism according to the present invention.

[0046] Figure 5 This is a schematic diagram of a robotic arm;

[0047] Figure 6 A schematic diagram of the lead-liquid addition mechanism;

[0048] Figure 7 This is a schematic diagram of the lead-retrieving unit;

[0049] Figure 8 for Figure 7 A vertical AA screenshot;

[0050] Figure 9 This is a schematic diagram of the casting and welding mechanism;

[0051] Figure 10 This is a front view of the casting and welding mechanism;

[0052] Markings in the diagram: 1-Casting and welding bottom mold, 11-Casting and welding cavity, 12-Support block, 121-Slide groove, 122-Support position, 2-Infrared heating mechanism, 3-Lead liquid adding mechanism, 31-Lead pot, 32-Lead liquid taking unit, 321-First lead liquid adding base, 3211-First horizontal cylinder, 3212-First vertical cylinder, 3213-First horizontal slide rail, 322-Second lead liquid adding base, 3221-Lead liquid cup, 3222-Switch, 3223-Guide rod, 33-Lead liquid adding guide, 331-Guide port, 34-Pressure adjusting screw, 4-Casting and welding mechanism, 41-Cooling tank, 4 2-Placement plate, 421-Placement opening, 43-Cast-welded base, 431-Second vertical cylinder, 44-Second horizontal cylinder, 5-Transfer mechanism, 51-First slide rail, 52-Manipulator, 521-Second slide rail, 522-Manipulator base, 5221-Lifting arm, 52211-Horizontal moving gripper, 52212-Cylinder, 523-Second drive unit, 5231-Second linear rack, 524-Second gear drive motor, 53-First drive unit, 531-First drive base, 5311-First gear drive motor, 5312-Support cylinder, 532-First linear rack. Detailed Implementation

[0053] Depend on Figures 1-10 As shown, the present invention provides a lead-acid battery casting and welding device, comprising: a support frame, on which an infrared heating station, a lead liquid adding station, and a casting and welding station are sequentially arranged; a casting and welding bottom mold 1, including at least one, the top surface of the casting and welding bottom mold 1 having a casting and welding cavity 11; an infrared heating mechanism 2, disposed at the infrared heating station, for heating the casting and welding bottom mold 1; a lead liquid adding mechanism 3, disposed at the lead liquid adding station, for adding lead liquid into the casting and welding cavity 11; a casting and welding mechanism 4, disposed at the casting and welding station, for extending the tabs on the inverted lead-acid battery into the casting and welding cavity 11 and casting and welding to form a busbar and terminal posts; and a transfer mechanism 5, for transferring the casting and welding bottom mold 1 between the various stations.

[0054] Specifically, the infrared heating mechanism 2 includes two rows of infrared heating tubes, which form a symmetrical heating structure. There is a gap between the two rows of infrared heating tubes for the casting and welding bottom mold 1 to pass through, so as to achieve circumferential heating and ensure the uniformity of the heating temperature of the casting and welding bottom mold.

[0055] The casting and welding bottom mold 1 is provided with support blocks 12 on both sides, and the support blocks are provided with sliding grooves; the transfer mechanism 5 includes: a first slide rail 51, which is provided on both sides of the infrared heating station, the lead liquid addition station and the casting and welding station, and the casting and welding bottom mold 1 slides with the first slide rail 51 through the sliding groove on the support block 12; a first drive unit 53, which is used to drive the casting and welding bottom mold 1 to move along the first slide rail 51; and a robot arm 52, which is used to transfer the casting and welding bottom mold 1 located at the casting and welding station after completing one casting and welding operation to the upstream end of the infrared heating station.

[0056] Specifically, the robotic arm 52 includes: a second slide rail 521, located above the infrared heating station, the lead liquid addition station, and the casting and welding station; a robotic arm base 522, having a slide groove that mates with the second slide rail 521, and the robotic arm base 522 is also provided with a lifting arm 5221 and a lifting drive unit for driving the lifting arm 5221 to lift and lower, the bottom of the lifting arm 5221 is provided with a pair of horizontally moving grippers 52211 and a cylinder 52212 for driving the horizontally moving grippers 52211 to grip or release the casting and welding bottom mold 1; and a second drive unit 523 for driving the robotic arm base 522 to move along the second slide rail 521.

[0057] Support positions 122 are provided on the support blocks 12 on both sides of the casting and welding bottom mold 1;

[0058] The first drive unit 53 includes a first drive base 531 and a first linear rack 532 arranged parallel to the first slide rail 51; the first drive unit 53 also includes a first gear meshing with the first linear rack 532, and a first gear drive motor 5311 for driving the first gear to rotate is provided on the first drive base 531; the first drive base 531 is also provided with a support cylinder 5312, and when the piston rod of the support cylinder 5312 extends out, its end extends into the support position 122;

[0059] The second drive unit 523 includes a second linear rack 5231 arranged parallel to the second slide rail 521; the second drive unit 523 also includes a second gear meshing with the second linear rack 5231, and a second gear drive motor 524 for driving the second gear to rotate is provided on the robot base 522.

[0060] The chute on the support block cooperates with the first slide rail in the transfer mechanism to achieve precise linear movement of the bottom mold between workstations, ensuring the alignment accuracy of lead liquid addition and casting and welding processes; the bottom of the support block is equipped with a support position for positioning and lifting of the first drive unit; the chute structure reduces the frictional resistance of the transfer, and in conjunction with the first drive unit (gear and rack transmission), the production cycle is increased to 12-15 seconds / workstation, realizing continuous production of battery casting and welding.

[0061] In addition, the lifting arm + horizontal gripper structure enables vertical grabbing and release of the bottom mold, and fully automated transfer replaces manual operation, reducing labor costs while avoiding the health risks to operators caused by high-temperature environments.

[0062] The lead liquid adding mechanism 3 includes: a lead pot 31 for holding lead liquid; and a lead liquid taking unit 32, including a first lead liquid adding base 321 and a second lead liquid adding base 322. A first horizontal cylinder 3211 for driving the first lead liquid adding base 321 to move horizontally is provided on the support. A first vertical cylinder 3212 for driving the second lead liquid adding base 322 to move vertically is provided on the first lead liquid adding base 321. A lead liquid cup 3221 with an opening on the bottom surface is also provided below the second lead liquid adding base 322. A switch 3222 for controlling the opening and closing of the opening on the bottom surface of the lead liquid cup 3221 is also provided on the second lead liquid adding base 322.

[0063] The bracket is also equipped with a first horizontal slide rail 3213, and a sliding groove is provided on the first lead liquid adding base 321. The first lead liquid adding base 321 slides and engages with the first horizontal slide rail 3213 through the sliding groove to move horizontally. The first lead liquid adding base 321 and the second lead liquid adding base 322 are connected by a guide rod 3223. The first vertical cylinder 3212 drives the second lead liquid adding base 322 to move vertically through the guide rod 3223.

[0064] On the one hand, the lead melting furnace is eliminated and a lead liquid adding mechanism is installed. The lead liquid adding mechanism and the heating temperature control of the casting and welding bottom mold are controlled separately to ensure the accuracy of the temperature control of the lead liquid adding mechanism and the heating temperature of the casting and welding bottom mold, thus solving the problems of large amounts of lead fumes and high energy consumption in the casting and welding process. On the other hand, the lead liquid adding mechanism is equipped with a switch. When the lead liquid adding mechanism moves, the switch opens to realize automatic lead filling. When the lead liquid adding mechanism stops moving, the switch closes. Moreover, the amount of lead liquid in the cup can meet the needs of casting at least one casting and welding bottom mold.

[0065] The lead liquid adding mechanism 3 of this invention also includes a lead liquid adding guide 33, which has a guide port 331. The upper opening of the guide port is a flared mouth, and the lower opening corresponds to a set of casting and welding cavities 11 on the casting and welding bottom mold 1. The lead liquid adding guide can be made of alloy copper, which can make close contact with the surface of the casting and welding bottom mold without affecting the transfer of the casting and welding bottom mold. The lead liquid adding mechanism has a clamping adjustment screw 34 at both ends, which can adjust the tension between the lead liquid adding mechanism and the casting and welding bottom mold to ensure that no lead liquid overflows during the lead pouring process of the casting and welding bottom mold.

[0066] The casting and welding mechanism 4 includes: a cooling tank 41, located on the side of the casting and welding station near the lead liquid addition mechanism 3, with an opening on the top surface of the cooling tank 41, and the opening on the top surface of the cooling tank 41 facing the bottom surface of the casting and welding bottom mold 1 when cooling the bottom mold 1; a placement plate 42, with a placement opening 421 for placing the lead-acid battery to be cast and welded upside down on the placement plate 42; a casting and welding base 43, including two respectively located on both sides of the placement plate 42, with a second vertical cylinder 431 for driving the placement plate 42 to move vertically; and a second horizontal cylinder 44, located on a bracket, for driving the casting and welding base 43 to move horizontally. Molten lead is poured from the lead cup into the casting mold cavity. The lead-acid battery, which is placed upside down on the placement plate for casting, is then lowered, and the electrode tabs are inserted into the molten lead in the casting mold cavity. The casting mold is cooled by a cooling tank, which can be achieved by spraying cold water or other cooling methods. The busbar and terminal posts are then formed, completing the casting process. This process allows cooling and casting to be carried out simultaneously, improving the efficiency of single-line production.

[0067] The lead-acid battery casting and welding method of the present invention, using the above-mentioned lead-acid battery casting and welding device, includes the following steps:

[0068] S1, the casting and welding bottom mold 1 is heated by infrared heating method, and the top surface of the casting and welding bottom mold 1 has a casting and welding cavity 11;

[0069] S2, Add molten lead to the casting cavity 11;

[0070] S3, insert the tabs on the inverted lead-acid battery into the casting and welding cavity 11 and cast and weld them to form a busbar and terminal post.

[0071] The specific lead-acid battery casting and welding method of this invention is as follows:

[0072] Step S1: Heating the casting and welding bottom mold

[0073] The transfer mechanism 5 transports the casting and welding bottom mold 1 along the first slide rail 51 to the infrared heating station; the infrared heating mechanism 2 starts the double-row heating tubes to heat the bottom mold to a certain temperature in a circumferential manner.

[0074] Step S2: Precise addition of lead solution

[0075] After being heated, the casting and welding bottom mold 1 is transferred to the lead liquid addition station;

[0076] Action of lead liquid dispensing unit 32:

[0077] The first horizontal cylinder 3211 pushes the lead liquid cup 3221 to directly below the lead pot 31; the first vertical cylinder 3212 lowers the lead liquid cup 3221 to immerse the lead liquid, and the switch 3222 opens the lead filling; the lead liquid cup 3221 rises and moves horizontally above the guide 33, the switch 3222 opens, and the lead liquid flows into the casting and welding cavity 11 through the flared mouth.

[0078] Step S3: Synchronous cooling and casting welding

[0079] After the lead solution is added, the casting and welding bottom mold 1 enters the casting and welding station:

[0080] Cooling stage: The cooling tank 41 moves upward to fit the bottom surface of the bottom mold and starts water cooling.

[0081] Casting and welding stage:

[0082] The operator inverts the lead-acid battery onto the placement opening 421 of the placement plate 42; the second horizontal cylinder 44 pushes the casting and welding base 43, so that the battery tabs are inserted into the molten lead in the casting and welding cavity 11; the second vertical cylinder 431 presses down on the placement plate 42 and maintains pressure to form the busbar.

[0083] After the casting and welding are completed, the robotic arm 52 grabs the casting and welding bottom mold 1 and returns it to the upstream of the heating station to start the next batch.

Claims

1. A lead-acid battery casting and welding device, characterized in that, include: The bracket is provided with an infrared heating station, a lead liquid addition station and a casting and welding station in sequence. A casting and welding bottom mold, comprising at least one, wherein the top surface of the casting and welding bottom mold has a casting and welding cavity; An infrared heating mechanism is located at the infrared heating station and is used to heat the casting and welding bottom mold; A lead liquid adding mechanism is provided at the lead liquid adding station for adding lead liquid into the casting and welding cavity; A casting and welding mechanism, located at the casting and welding station, is used to insert the tabs on the inverted lead-acid battery into the casting and welding cavity and cast and weld them to form a busbar and terminal posts. The transfer mechanism is used to transfer the casting and welding bottom mold between various work stations.

2. The lead-acid battery casting and welding apparatus according to claim 1, characterized in that, The infrared heating mechanism includes two rows of infrared heating tubes, with a gap between the two rows of infrared heating tubes for the bottom mold to pass through.

3. The lead-acid battery casting and welding apparatus according to claim 1, characterized in that, The casting and welding bottom mold is provided with support blocks on both sides, and the support blocks are provided with sliding grooves; The transfer mechanism includes: The first slide rail is located on both sides of the infrared heating station, the lead liquid addition station, and the casting and welding station. The casting and welding bottom mold slides with the first slide rail through the sliding groove on the support block. The first driving unit is used to drive the casting and welding bottom mold to move along the first slide rail; A robotic arm is used to transfer the bottom mold of the casting and welding station, which is located at the casting and welding station after one casting and welding operation, back to the upstream end of the infrared heating station.

4. The lead-acid battery casting and welding apparatus according to claim 3, characterized in that, The robotic arm includes: The second slide rail is located above the infrared heating station, the lead liquid addition station, and the casting and welding station. The robot arm base has a slide groove that mates with the second slide rail. The robot arm base is also provided with a lifting arm and a lifting drive unit that drives the lifting arm to lift. The bottom of the lifting arm is provided with a pair of horizontal moving grippers and a cylinder that drives the horizontal moving grippers to grip or release the casting and welding bottom mold. The second drive unit is used to drive the robot arm base to move along the second slide rail.

5. The lead-acid battery casting and welding apparatus according to claim 4, characterized in that, Support positions are provided on the support blocks on both sides of the casting and welding bottom mold; The first drive unit includes a first drive base and a first linear rack arranged parallel to the first slide rail; the first drive unit also includes a first gear meshing with the first linear rack, and a first gear drive motor for driving the first gear to rotate is provided on the first drive base; the first drive base is also provided with a support cylinder, and the end of the piston rod of the support cylinder extends into the support position when it extends out. The second drive unit includes a second linear rack arranged parallel to the second slide rail; the second drive unit also includes a second gear meshing with the second linear rack, and the robot base is provided with a second gear drive motor that drives the second gear to rotate.

6. The lead-acid battery casting and welding apparatus according to claim 1, characterized in that, The lead solution adding mechanism includes: A lead pot, used to hold molten lead; The lead liquid dispensing unit includes a first lead liquid adding base and a second lead liquid adding base. The support is provided with a first horizontal cylinder for driving the first lead liquid adding base to move horizontally. The first lead liquid adding base is provided with a first vertical cylinder for driving the second lead liquid adding base to move vertically. A lead liquid cup with an opening on the bottom surface is also provided below the second lead liquid adding base. The second lead liquid adding base is also provided with a switch for controlling the opening and closing of the opening on the bottom surface of the lead liquid cup.

7. The lead-acid battery casting and welding apparatus according to claim 6, characterized in that, The lead liquid adding mechanism also includes a lead liquid adding guide, which has a guide port. The upper opening of the guide port is a flared mouth, and the lower opening corresponds to a set of casting and welding cavities on the casting and welding bottom mold.

8. The lead-acid battery casting and welding apparatus according to claim 1, characterized in that, The casting and welding mechanism includes: A cooling tank is located on the side of the casting and welding station near the lead liquid adding mechanism. The top surface of the cooling tank is open, and when cooling the bottom mold of the casting and welding, the top surface opening of the cooling tank faces the bottom surface of the bottom mold of the casting and welding. A placement plate, wherein the placement plate is provided with a placement opening for placing a lead-acid battery to be cast and welded upside down on the placement plate; The cast-welded base includes two cylinders respectively disposed on both sides of the placement plate, and the cast-welded base is provided with a second vertical cylinder for driving the placement plate to move vertically; The second horizontal cylinder, mounted on the bracket, is used to drive the cast-welded base to move horizontally.

9. A method for casting and welding lead-acid batteries, characterized in that, Includes the following steps: S1, The bottom mold for casting and welding is heated using an infrared heating method, wherein the top surface of the bottom mold for casting and welding has a casting and welding cavity; S2, Add molten lead to the casting cavity; S3, the tabs on the inverted lead-acid battery are inserted into the casting and welding cavity and cast and welded to form a busbar and terminal post.

10. The lead-acid battery casting and welding method according to claim 9, characterized in that, Use the lead-acid battery casting and welding apparatus according to any one of claims 1 to 8.

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