A welding device for the metal shell of a storage battery

Abstract

The present invention relates to the technical field of storage batteries, and specifically to a welding device for the metal shell of a storage battery, including a base. A control mechanism is fixedly connected to the front side of the top of the base. A plurality of metal shell placement mechanisms are fixedly connected to the outer wall of the control mechanism in a circular array. A welding mechanism is fixedly connected to the rear side of the top of the base. By setting the control mechanism and the metal shell placement mechanism, the present invention realizes the automation and high efficiency in the welding process of the metal shell of a lithium battery. Specifically, the control mechanism constructs a precise transmission system through the internal mechanical structures such as a rotating rod motor, a connecting column, a connecting rod, a sliding groove disk, an inner turntable, a tooth block, a gear, a second gear connecting rod, and a second gear. This system can accurately control the position and posture of the metal shell placement mechanism, thus avoiding the cumbersome steps of manually frequently installing and disassembling the lithium battery shell in the traditional welding process.

Description

Technical Field

[0001] The present invention relates to the technical field of storage batteries, and more specifically, the present invention relates to a welding device for the metal shell of a storage battery. Background Art

[0002] A storage battery is a device that directly converts chemical energy into electrical energy. It is a rechargeable battery designed to be recharged through a reversible chemical reaction. Usually, it refers to a lead-acid battery, which is one type of battery and belongs to secondary batteries. Its working principle is as follows: during charging, external electrical energy is used to regenerate the internal active substances, and the electrical energy is stored as chemical energy. When discharging is required, the chemical energy is converted back into electrical energy for output. For example, the mobile phone batteries commonly used in daily life, etc.

[0003] According to the patent document: CN218800112U, a welding device for nickel-aluminum sheets on the outer shell of a lithium battery disclosed therein includes a battery shell welding tooling and a spot welder arranged above the battery shell welding tooling; the battery shell welding tooling includes a workbench, a base arranged on the workbench, a plurality of base slots arranged on the base, a plurality of battery shell support seats arranged in the base slots, and an upper cover arranged above the battery shell support seats; a plurality of upper cover slots corresponding to the positions of the battery shell support seats are arranged in the upper cover; the upper cover slots are used to position the nickel-aluminum sheets. This utility model designs the battery shell welding tooling into a plurality of battery shell support seats and installs them on the same base, so that multiple battery shells can be placed into the battery shell support seats at one time. The upper cover has been redesigned according to the quantity and positions of the battery shell supports, and upper cover slots for placing nickel-aluminum sheets are opened according to the positions of the battery shell support seats; this design can simultaneously achieve the automatic welding of multiple battery shells;

[0004] When welding the metal shells of general storage batteries, usually a large number of metal shells are welded. However, in the traditional welding process of the metal shells of storage batteries, the problem of efficiency often arises in large-scale welding operations. After the welding of the metal shell of a lithium battery is completed, it is necessary to stop the welding device, reinstall the lithium battery shell, and then weld it again. This repetitive installation and disassembly process not only consumes time and effort but also significantly reduces the production efficiency, and it is impossible to achieve the automation and high efficiency of welding the metal shells of lithium batteries. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a welding device for the metal shell of a storage battery. The technical problem to be solved by the present invention is that in the traditional welding process of the metal shell of a storage battery, the problem of efficiency often arises in large-scale welding operations. After the welding of the metal shell of a lithium battery is completed, it is necessary to stop the welding device, reinstall the lithium battery shell, and then weld it again. This repetitive installation and disassembly process not only consumes time and effort but also significantly reduces the production efficiency, and it is impossible to achieve the automation and high efficiency of welding the metal shells of lithium batteries.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is as follows:

[0007] A welding device for a metal shell of a storage battery, comprising a base, a control mechanism is fixedly connected to the front side of the top of the base, a plurality of metal shell placing mechanisms are fixedly connected to the outer wall of the control mechanism in a circular array, and a welding mechanism is fixedly connected to the rear side of the top of the base;

[0008] The control mechanism includes a control mechanism base, a connecting column is fixedly connected to the top of the control mechanism base, a connecting rod is fixedly connected to the outer wall of the connecting column, a sliding groove disk is fixedly connected to the bottom of the connecting rod, and a rotating rod motor is fixedly connected to the bottom of the inner wall of the control mechanism base.

[0009] As a further solution of the present invention: a connecting cross bar is fixedly connected to the middle of the inner wall of the connecting column, the output end of the rotating rod motor is fixedly connected to a rotating rod, the top end of the rotating rod extends into the inner wall of the connecting column, the middle of the outer wall of the rotating rod is rotatably connected to the middle of the inner wall of the connecting cross bar, an inner turntable is rotatably connected to the top of the connecting cross bar, the outer wall of the rotating rod on the side far from the connecting cross bar is fixedly connected to the inner wall of the inner turntable, and a plurality of tooth blocks are fixedly connected to the top of the inner turntable in a circular array.

[0010] As a further solution of the present invention: gears are respectively meshed on both sides of the top of a plurality of the tooth blocks, second gear connecting rods are fixedly connected to the opposite surfaces of the two gears, and second gears are fixedly connected to the opposite ends of the two second gear connecting rods extending to the outer wall of the connecting column.

[0011] As a further solution of the present invention: a sector tooth connecting block is fixedly connected to the bottom of the sliding groove disk, a sector tooth is fixedly connected to the side of the sector tooth connecting block far from the sliding groove disk, an L-shaped sector tooth connecting rod is fixedly connected to the side of the bottom of the sliding groove disk far from the sector tooth connecting block, a second sector tooth placing block is fixedly connected to the side of the L-shaped sector tooth connecting rod far from the sliding groove disk, and a second sector tooth is fixedly connected to the side of the second sector tooth placing block close to the sliding groove disk.

[0012] As a further solution of the present invention: an outer turntable is rotatably connected to the inner wall of the top of the connecting rod, the inner wall of the outer turntable is designed with a hollow, the inner wall of the outer turntable is rotatably connected to the outer wall of the connecting column, a connecting disk is fixedly connected to the outer wall of the outer turntable, a plurality of outer turntable tooth blocks are fixedly connected to the top of the outer turntable in a circular array, the top sides of the plurality of outer turntable tooth blocks are respectively meshed on the outer walls of the two second gears, a plurality of connecting frames are fixedly connected to the top of the connecting disk in a circular array, and placing mechanism connecting pipes are fixedly connected to the sides of the plurality of connecting frames far from the connecting disk.

[0013] As a further solution of the present invention: a plurality of the metal housing placement mechanisms each include a placement mechanism bottom tube, and the outer walls of a plurality of the placement mechanism bottom tubes are fixedly connected to the inner wall of the placement mechanism connecting tube.

[0014] As a further solution of the present invention: a cross plate is fixedly connected to the top of the placement mechanism bottom tube, connection grooves are respectively opened and connected at the four sides of the top of the cross plate, a lead screw is rotatably connected to the inner wall of the placement mechanism bottom tube, the bottom end of the lead screw extends to the bottom of the placement mechanism bottom tube and is fixedly connected with a third gear, and the top end of the lead screw extends to the top of the cross plate and is threadedly connected with a fixing mechanism.

[0015] As a further solution of the present invention: the fixing mechanism includes a lifting tube, the inner wall of the lifting tube is threadedly connected to the outer wall of the lead screw, four rotating rod connecting rods are respectively fixedly connected to the outer wall of the lifting tube, the upper and lower sides of the outer walls of the four rotating rod connecting rods are respectively rotatably connected with rotating rods, one side of each group of rotating rods away from the rotating rod connecting rod is rotatably connected with a fixing plate connecting rod, one side of the four fixing plate connecting rods away from the lifting tube is fixedly connected with a fixing plate, and the bottom of one side of the four fixing plate connecting rods close to the fixing plate connecting rod is fixedly connected with a slider, and the outer walls of the four sliders are slidably connected to the inner walls of the connection grooves.

[0016] As a further solution of the present invention: the welding mechanism includes a vertical plate, a hydraulic push rod motor is fixedly connected to the bottom of the front side of the vertical plate, the output end of the hydraulic push rod motor is fixedly connected with a hydraulic push rod, a hinge block is fixedly connected to the top of the vertical plate, hinge block connection grooves are respectively opened on the left and right sides of the hinge block, and slide rod grooves are respectively opened on the inner sides of the two hinge block connection grooves.

[0017] As a further solution of the present invention: the top end of the hydraulic push rod is fixedly connected with a U-shaped push-pull plate, a slide rod is fixedly connected to the inner side of the U-shaped push-pull plate, the left and right sides of the top of the U-shaped push-pull plate are respectively slidably connected to the inner walls of the two hinge block connection grooves, the left and right sides of the outer wall of the slide rod are respectively slidably connected to the inner walls of the two slide rod grooves, a welding gun rotating rod is rotatably connected to the front side of the inner wall of the hinge block, a rotating rod push-pull block is fixedly connected to the rear side of the welding gun rotating rod, the inner wall of the rotating rod push-pull block is slidably connected to the outer wall of the slide rod, a welding gun connection block is fixedly connected to the front side of the welding gun rotating rod, and a welding gun is fixedly connected to the front side of the welding gun connection block.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention realizes the automation and high efficiency in the welding process of the metal shell of lithium batteries by setting up a control mechanism and a metal shell placement mechanism. Specifically, the control mechanism constructs a precise transmission system through its internal mechanical structures, such as a rotating rod motor, connecting columns, connecting rods, sliding groove disks, inner turntables, tooth blocks, gears, second gear connecting rods, and second gears. This system can accurately control the position and posture of the metal shell placement mechanism, thus avoiding the cumbersome steps of manually frequently installing and disassembling the lithium battery shell in the traditional welding process;

[0020] 2. The present invention sets up a control mechanism. Specifically, when the rotating rod motor starts, it drives the rotating rod to rotate. Then, through the interaction of the connecting crossbar, inner turntable, and tooth block, the two second gears rotate relative to each other. This rotational movement is transmitted to the outer turntable through the connecting rod, enabling the outer turntable to perform a circular motion around the connecting column. At the same time, the meshing relationship between the outer turntable tooth block on the outer turntable and the second gear ensures that the outer turntable can maintain a stable posture during rotation, thereby driving the connecting disk and multiple metal shell placement mechanisms thereon to move synchronously.

[0021] 3. The present invention sets up a metal shell placement mechanism. Specifically, the bottom tube of each placement mechanism is fixed on the outer turntable through the placement mechanism connecting tube and moves with the rotation of the outer turntable. More importantly, each placement mechanism internally is designed with components such as a lead screw, lifting tube, rotating rod, and fixing plate, constituting a flexible fixing mechanism. When it rotates to the bottom of the welding mechanism, the third gear rotates through the meshing of the sector teeth, thereby driving the lead screw to rotate and drive the lifting tube to move up and down. Then, through the rotating rod and the fixing plate connecting rod, the fixing plate is driven to contract inward or expand outward to achieve firm clamping of the metal shell. This design not only ensures the stability during the welding process but also makes the loading and unloading of the metal shell quicker and more convenient. After the welding is completed, the metal shell placement mechanism can be automatically adjusted to a suitable position through the meshing of the second sector teeth, facilitating the quick extraction of the welded finished product and the preparation for the next batch, realizing the automation and high efficiency of the welding of the metal shell of lithium batteries, not only reducing manual intervention but also significantly improving the production efficiency and welding quality.

[0022] 4. The present invention sets up a welding mechanism. When the welding is completed, the hydraulic push rod motor receives a stop instruction, drives the hydraulic push rod and the U-shaped push-pull plate to move downward. The sliding rod slides in the groove, pulling the rotating rod push-pull block, causing the welding gun rotating rod, welding gun connecting block, and welding gun to rotate to the top of the hinge block, and the welding gun is safely stored above the hinge block, avoiding accidental injuries and damage in the non-working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective structural schematic diagram of the main body of the present invention;

[0024] Figure 2 Schematic three-dimensional structure diagram of the control mechanism and the metal shell placement mechanism of the present invention;

[0025] Figure 3 Schematic three-dimensional structure diagram of the control mechanism of the present invention;

[0026] Figure 4 Schematic three-dimensional sectional structure diagram of the control mechanism of the present invention;

[0027] Figure 5 Schematic three-dimensional structure diagram of the connecting disk and the outer turntable of the present invention;

[0028] Figure 6 Schematic three-dimensional structure diagram of the metal shell placement mechanism of the present invention;

[0029] Figure 7 Schematic three-dimensional separated structure diagram of the bottom pipe of the placement mechanism and the fixing mechanism of the present invention;

[0030] Figure 8 Schematic three-dimensional structure diagram of the fixing mechanism of the present invention;

[0031] Figure 9 Schematic three-dimensional separated structure diagram of the welding mechanism of the present invention.

[0032] In the figure: 1, base; 2, control mechanism; 21, control mechanism base; 22, connecting column; 23, connecting rod; 24, chute disk; 25, sector gear connecting block; 26, sector gear; 27, L-shaped sector gear connecting rod; 28, second sector gear placement block; 29, second sector gear; 210, rotating rod motor; 211, rotating rod; 212, connecting cross bar; 213, inner turntable; 214, tooth block; 215, gear; 216, second gear connecting rod; 217, second gear; 218, connecting disk; 219, outer turntable; 220, outer turntable tooth block; 221, connecting frame; 222, placement mechanism connecting pipe; 3, metal shell placement mechanism; 31, placement mechanism bottom pipe; 32, cross plate; 33, chute; 34, lead screw; 35, third gear; 36, fixing mechanism; 361, lifting pipe; 362, rotating rod connecting rod; 363, rotating rod; 364, fixing plate connecting rod; 365, fixing plate; 366, slider; 4, welding mechanism; 41, vertical plate; 42, hydraulic push rod motor; 43, hydraulic push rod; 44, U-shaped push-pull plate; 45, slide rod; 46, hinge block; 47, hinge block chute; 48, slide rod chute; 49, welding gun rotating rod; 410, rotating rod push-pull block; 411, welding gun connecting block; 412, welding gun. Detailed implementation manners

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] As Figures 1-9 shown, the present invention provides a welding device for a metal shell of a storage battery, which includes a base 1. A control mechanism 2 is fixedly connected to the front side of the top of the base 1. A plurality of metal shell placement mechanisms 3 are fixedly connected to the outer wall of the control mechanism 2 in a circumferential array. A welding mechanism 4 is fixedly connected to the rear side of the top of the base 1.

[0035] As Figures 2-8As shown, the control mechanism 2 includes a control mechanism base 21. A connecting column 22 is fixedly connected to the top of the control mechanism base 21. A connecting rod 23 is fixedly connected to the outer wall of the connecting column 22. A sliding groove plate 24 is fixedly connected to the bottom of the connecting rod 23. A rotating rod motor 210 is fixedly connected to the bottom of the inner wall of the control mechanism base 21. A connecting cross bar 212 is fixedly connected to the middle of the inner wall of the connecting column 22. The output end of the rotating rod motor 210 is fixedly connected to a rotating rod 211. The top of the rotating rod 211 extends into the inner wall of the connecting column 22. The middle of the outer wall of the rotating rod 211 is rotatably connected to the middle of the inner wall of the connecting cross bar 212. An inner turntable 213 is rotatably connected to the top of the connecting cross bar 212. The outer wall of the rotating rod 211 on the side away from the connecting cross bar 212 is fixedly connected to the inner wall of the inner turntable 213. A plurality of tooth blocks 214 are fixedly connected to the top of the inner turntable 213 in a circular array. Two gears 215 are respectively meshed with both sides of the top of the plurality of tooth blocks 214. A second gear connecting rod 216 is fixedly connected to the opposite faces of the two gears 215. The opposite ends of the two second gear connecting rods 216 extend to the outer wall of the connecting column 22 and are both fixedly connected to a second gear 217. A sector tooth connecting block 25 is fixedly connected to the bottom of the sliding groove plate 24. A sector tooth 26 is fixedly connected to the side of the sector tooth connecting block 25 away from the sliding groove plate 24. An L-shaped sector tooth connecting rod 27 is fixedly connected to the side of the bottom of the sliding groove plate 24 away from the sector tooth connecting block 25. A second sector tooth placing block 28 is fixedly connected to the side of the L-shaped sector tooth connecting rod 27 away from the sliding groove plate 24. A second sector tooth 29 is fixedly connected to the side of the second sector tooth placing block 28 close to the sliding groove plate 24. An outer turntable 219 is rotatably connected to the top inner wall of the connecting rod 23. The inner wall of the outer turntable 219 is of a hollow design. The inner wall of the outer turntable 219 is rotatably connected to the outer wall of the connecting column 22. A connecting plate 218 is fixedly connected to the outer wall of the outer turntable 219. A plurality of outer turntable tooth blocks 220 are fixedly connected to the top of the outer turntable 219 in a circular array. Both sides of the top of the plurality of outer turntable tooth blocks 220 are respectively meshed with the outer walls of the two second gears 217. A plurality of connecting frames 221 are fixedly connected to the top of the connecting plate 218 in a circular array. A placing mechanism connecting pipe 222 is fixedly connected to the side of each of the plurality of connecting frames 221 away from the connecting plate 218. Each of the plurality of metal shell placing mechanisms 3 includes a placing mechanism bottom pipe 31. The outer walls of the plurality of placing mechanism bottom pipes 31 are all fixedly connected to the inner wall of the placing mechanism connecting pipe 222. A cross plate 32 is fixedly connected to the top of the placing mechanism bottom pipe 31. Sliding grooves 33 are respectively opened and connected to the four sides of the top of the cross plate 32. A lead screw 34 is rotatably connected to the inner wall of the placing mechanism bottom pipe 31. The bottom end of the lead screw 34 extends to the bottom of the placing mechanism bottom pipe 31 and is fixedly connected to a third gear 35. The top end of the lead screw 34 extends to the top of the cross plate 32 and is threadedly connected to a fixing mechanism 36. The fixing mechanism 36 includes a lifting pipe 361. The inner wall of the lifting pipe 361 is threadedly connected to the outer wall of the lead screw 34. A rotating rod connecting rod 362 is fixedly connected to the four sides of the outer wall of the lifting pipe 361.On the upper and lower sides of the outer wall of the four rotating rod connecting rod 362, there are rotatably connected rotating rods 363. On the side of the four groups of rotating rods 363 away from the rotating rod connecting rod 362, there are rotatably connected fixed plate connecting rods 364. On the side of the four fixed plate connecting rods 364 away from the lifting tube 361, there are fixedly connected fixed plates 365. At the bottom of the side of the four fixed plate connecting rods 364 close to the fixed plate connecting rods 364, there are fixedly connected sliders 366. The outer walls of the four sliders 366 are slidably connected to the inner wall of the chute 33;

[0036] When welding the metal shell of the lithium battery, first place the metal shell of the lithium battery in each metal shell placement mechanism 3. Specifically, align the bottom of the shell with the bottom tube 31 of the placement mechanism and gently press down so that the bottom of the shell contacts the cross plate 32. Subsequently, start the rotating rod motor 210 in the control mechanism 2. The motor drives the rotating rod 211 to rotate, and then through the meshing action of the inner turntable 213 and the tooth block 214, drives the two gears 215 and the second gear 217 to rotate. During this process, the outer turntable 219 realizes rotational movement through the meshing relationship between the outer turntable tooth block 220 and the second gear 217, and drives the connecting plate 218, all the connecting frames 221, and the placement mechanism connecting tube 222 to rotate synchronously. In this way, each metal shell placement mechanism 3 can perform circular motion around the central axis of the control mechanism 2, realizing the function of automatically positioning below the welding mechanism 4;

[0037] Meanwhile, when rotating below the welding mechanism 4, in order to more precisely fix the metal shell of the lithium battery, during the process when any one of the metal shell placement mechanisms 3 rotates below the welding mechanism 4, the third gear 35 will mesh with the sector gear 26, thereby causing the third gear 35 to rotate. The lead screw 34 rotates through the drive of the third gear 35 and can move the lifting tube 361 up and down. The up and down movement of the lifting tube 361, through the transmission of the rotating rod connecting rod 362 and the rotating rod 363, causes the fixed plate connecting rod 364 and the fixed plate 365 to move closer to the center or expand outwards to adapt to lithium battery metal shells of different sizes. The sliders 366 on the fixed plate 365 slide in the chute 33 to ensure that the fixed plate 365 can move smoothly and firmly clamp the shell to prevent displacement during the welding process;

[0038] After welding is completed, the control mechanism 2 continues to operate, driving each metal shell placement mechanism 3 to perform circular motion, taking the welded lithium battery metal shell away from under the welding mechanism 4, and engaging the other side of the second sector gear 29 with the third gear 35 to achieve reverse rotation, causing the lead screw 34 to reverse, releasing the clamping of the lithium battery metal shell, allowing the shell to smoothly disengage from the metal shell placement mechanism 3. The staff can remove the currently welded lithium battery metal shell while the previous one is being welded and place the next shell to be welded into the idle metal shell placement mechanism 3. Such cyclic operation not only greatly improves production efficiency but also ensures the continuity and stability of the welding process.

[0039] As Figure 9 shown, the welding mechanism 4 includes a vertical plate 41. At the bottom of the front side of the vertical plate 41, a hydraulic push rod motor 42 is fixedly connected. The output end of the hydraulic push rod motor 42 is fixedly connected to a hydraulic push rod 43. At the top of the vertical plate 41, a hinge block 46 is fixedly connected. On the left and right sides of the hinge block 46, hinge block chutes 47 are respectively provided. Inside both hinge block chutes 47, slide rod grooves 48 are provided. The top end of the hydraulic push rod 43 is fixedly connected to a U-shaped push-pull plate 44. Inside the U-shaped push-pull plate 44, a slide rod 45 is fixedly connected. The left and right sides of the top of the U-shaped push-pull plate 44 are respectively slidably connected to the inner walls of the two hinge block chutes 47. The left and right sides of the outer wall of the slide rod 45 are respectively slidably connected to the inner walls of the two slide rod grooves 48. At the front side of the inner wall of the hinge block 46, a welding gun rotating rod 49 is rotatably connected. At the rear side of the welding gun rotating rod 49, a rotating rod push-pull block 410 is fixedly connected. The inner wall of the rotating rod push-pull block 410 is slidably connected to the outer wall of the slide rod 45. At the front side of the welding gun rotating rod 49, a welding gun connecting block 411 is fixedly connected. At the front side of the welding gun connecting block 411, a welding gun 412 is fixedly connected;

[0040] When welding is completed and no further welding is required, the hydraulic push rod motor 42 receives a stop command, and its output end starts to retract, driving the hydraulic push rod 43 and the U-shaped push-pull plate 44 connected thereto to move downward. As the U-shaped push-pull plate 44 descends, the slide rod 45 slides smoothly in the slide rod groove 48 and pulls the rotating rod push-pull block 410 to drive the welding gun rotating rod 49 to rotate, causing the welding gun connecting block 411 to rotate and driving the welding gun 412 to rotate to the top of the hinge block 46. At this time, the welding gun 412 has completed the welding operation and is safely stored above the hinge block 46, away from the working area, avoiding accidental injuries and damages in the non-working state;

[0041] At this time, the entire welding process is completed, and the welding mechanism 4 enters the standby state, waiting for the next welding instruction. During this period, the staff can safely inspect and maintain the welding equipment to ensure its normal operation in subsequent work. At the same time, the welded lithium battery metal casings can be removed one by one for subsequent quality inspection and assembly processes.

[0042] Working principle of the present invention: When welding the lithium battery metal casing is required, first place the lithium battery metal casing in each metal casing placement mechanism 3. Specifically, align the bottom of the casing with the bottom tube 31 of the placement mechanism and gently press down so that the bottom of the casing contacts the cross plate 32. Subsequently, start the rotating rod motor 210 in the control mechanism 2. The motor drives the rotating rod 211 to rotate, and then through the meshing action of the inner turntable 213 and the tooth block 214, drives the two gears 215 and the second gear 217 to rotate. During this process, the outer turntable 219 realizes rotational motion through the meshing relationship between the outer turntable tooth block 220 and the second gear 217, and drives the connecting disk 218 and all the connecting brackets 221 and the placement mechanism connecting tube 222 to rotate synchronously. In this way, each metal casing placement mechanism 3 can perform circular motion around the central axis of the control mechanism 2, realizing the function of automatically positioning under the welding mechanism 4. At the same time, when rotating under the welding mechanism 4, in order to more precisely fix the lithium battery metal casing, during the process of any one metal casing placement mechanism 3 rotating under the welding mechanism 4, the third gear 35 will mesh with the sector gear 26, so that the third gear 35 rotates. The lead screw 34 rotates through the drive of the third gear 35 and can move up and down the lifting tube 361. The up and down movement of the lifting tube 361, through the transmission of the rotating rod connecting rod 362 and the rotating rod 363, causes the fixing plate connecting rod 364 and the fixing plate 365 to move towards the center or expand outwards to adapt to lithium battery metal casings of different sizes. The slider 366 on the fixing plate 365 slides in the chute 33 to ensure that the fixing plate 365 can move smoothly and firmly clamp the casing to prevent displacement during the welding process. When the welding is completed, the control mechanism 2 continues to work, driving each metal casing placement mechanism 3 to perform circular motion, taking the welded lithium battery metal casing away from under the welding mechanism 4, and realizing reverse rotation by engaging the other side of the third gear 35 with the second sector gear 29, so that the lead screw 34 rotates in reverse, releasing the clamping of the lithium battery metal casing and allowing the casing to smoothly disengage from the metal casing placement mechanism 3. The staff can remove the currently welded lithium battery metal casing when the previous one is being welded, and at the same time place the next casing to be welded into the idle metal casing placement mechanism 3. Such cyclic operations not only greatly improve production efficiency but also ensure the continuity and stability of the welding process;

[0043] When welding is completed and no further welding is required, the hydraulic push rod motor 42 receives a stop instruction, and its output end starts to retract, driving the hydraulic push rod 43 and the U-shaped push-pull plate 44 connected thereto to move downward. As the U-shaped push-pull plate 44 descends, the sliding rod 45 slides smoothly in the sliding rod groove 48, and pulls the rotating rod push-pull block 410 to drive the welding gun rotating rod 49 to rotate, causing the welding gun connecting block 411 to rotate and driving the welding gun 412 to rotate to the top of the hinge block 46. At this time, the welding gun 412 has completed the welding operation and is safely stored above the hinge block 46, away from the working area, avoiding accidental injuries and damage in the non-working state. At this time, the entire welding process is over, and the welding mechanism 4 enters the standby state, waiting for the next welding instruction. During this period, the staff can safely inspect and maintain the welding equipment to ensure its normal operation in subsequent work. At the same time, the welded lithium battery metal shells can be removed one by one for subsequent quality inspection and assembly processes.

[0044] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or the communication inside two components. It can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0045] Second: In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments of the present disclosure are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A battery metal shell welding device, including a base (1), characterized in that: A control mechanism (2) is fixedly connected to the front side of the top of the base (1). A plurality of metal shell placement mechanisms (3) are fixedly connected to the outer wall of the control mechanism (2) in an annular array. A welding mechanism (4) is fixedly connected to the rear side of the top of the base (1). The control mechanism (2) includes a control mechanism base (21). A connecting column (22) is fixedly connected to the top of the control mechanism base (21). A connecting rod (23) is fixedly connected to the outer wall of the connecting column (22). A sliding groove plate (24) is fixedly connected to the bottom of the connecting rod (23). A rotating rod motor (210) is fixedly connected to the bottom of the inner wall of the control mechanism base (21). A connecting cross bar (212) is fixedly connected to the middle of the inner wall of the connecting column (22). The output end of the rotating rod motor (210) is fixedly connected to a rotating rod (211). The top end of the rotating rod (211) extends into the inner wall of the connecting column (22). The middle of the outer wall of the rotating rod (211) is rotatably connected to the middle of the inner wall of the connecting cross bar (212). An inner turntable (213) is rotatably connected to the top of the connecting cross bar (212). The outer wall of the rotating rod (211) on the side away from the connecting cross bar (212) is fixedly connected to the inner wall of the inner turntable (213). A plurality of tooth blocks (214) are fixedly connected to the top of the inner turntable (213) in an annular array. The top sides of the plurality of tooth blocks (214) are respectively meshed with gears (215). A second gear connecting rod (216) is fixedly connected to the opposite surfaces of the two gears (215). The opposite ends of the two second gear connecting rods (216) extend to the outer wall of the connecting column (22) and are both fixedly connected to second gears (217). A sector tooth connecting block (25) is fixedly connected to the bottom of the sliding groove plate (24). A sector tooth (26) is fixedly connected to the side of the sector tooth connecting block (25) away from the sliding groove plate (24). An L-shaped sector tooth connecting rod (27) is fixedly connected to the side of the bottom of the sliding groove plate (24) away from the sector tooth connecting block (25). A second sector tooth placement block (28) is fixedly connected to the side of the L-shaped sector tooth connecting rod (27) away from the sliding groove plate (24). A second sector tooth (29) is fixedly connected to the side of the second sector tooth placement block (28) close to the sliding groove plate (24). An outer turntable (219) is rotatably connected to the top inner wall of the connecting rod (23). The inner wall of the outer turntable (219) is designed with a hollow. The inner wall of the outer turntable (219) is rotatably connected to the outer wall of the connecting column (22). A connecting plate (218) is fixedly connected to the outer wall of the outer turntable (219). A plurality of outer turntable tooth blocks (220) are fixedly connected to the top of the outer turntable (219) in an annular array. The top sides of the plurality of outer turntable tooth blocks (220) are respectively meshed with the outer walls of the two second gears (217). A plurality of connecting frames (221) are fixedly connected to the top of the connecting plate (218) in an annular array. A placement mechanism connecting pipe (222) is fixedly connected to the side of each of the plurality of connecting frames (221) away from the connecting plate (218).

2. The welding device for the metal shell of a storage battery according to claim 1, characterized in that: Each of the plurality of metal housing placement mechanisms (3) includes a placement mechanism bottom tube (31), and the outer walls of the plurality of placement mechanism bottom tubes (31) are fixedly connected to the inner wall of the placement mechanism connecting tube (222).

3. A battery metal shell welding device according to claim 2, characterized in that: A cross plate (32) is fixedly connected to the top of the placement mechanism bottom tube (31). Slide grooves (33) are respectively formed and connected at the four sides of the top of the cross plate (32). A lead screw (34) is rotatably connected to the inner wall of the placement mechanism bottom tube (31). The bottom end of the lead screw (34) extends to the bottom of the placement mechanism bottom tube (31) and is fixedly connected to a third gear (35). The top end of the lead screw (34) extends to the top of the cross plate (32) and is threadedly connected to a fixing mechanism (36).

4. A battery metal shell welding device according to claim 3, characterized in that: The fixing mechanism (36) includes a lifting tube (361). The inner wall of the lifting tube (361) is threadedly connected to the outer wall of the lead screw (34). Rotating rod connecting rods (362) are respectively fixedly connected to the four sides of the outer wall of the lifting tube (361). Rotating rods (363) are rotatably connected to the upper and lower sides of the outer walls of the four rotating rod connecting rods (362). One side of each group of the rotating rods (363) away from the rotating rod connecting rod (362) is rotatably connected to a fixing plate connecting rod (364). Fixing plates (365) are respectively fixedly connected to the sides of the four fixing plate connecting rods (364) away from the lifting tube (361). Sliders (366) are respectively fixedly connected to the bottoms of the sides of the four fixing plate connecting rods (364) close to the fixing plate connecting rod (364). The outer walls of the four sliders (366) are slidably connected to the inner walls of the slide grooves (33).

5. A battery metal shell welding device according to claim 1, characterized in that: The welding mechanism (4) includes a vertical plate (41). A hydraulic push rod motor (42) is fixedly connected to the bottom of the front side of the vertical plate (41). The output end of the hydraulic push rod motor (42) is fixedly connected to a hydraulic push rod (43). A hinge block (46) is fixedly connected to the top of the vertical plate (41). Hinge block slide grooves (47) are respectively formed on the left and right sides of the hinge block (46). Slide rod grooves (48) are respectively formed on the inner sides of the two hinge block slide grooves (47).

6. The battery metal shell welding device according to claim 5, characterized in that: The top end of the hydraulic push rod (43) is fixedly connected to a U-shaped push-pull plate (44). A slide rod (45) is fixedly connected to the inner side of the U-shaped push-pull plate (44). The left and right sides of the top of the U-shaped push-pull plate (44) are respectively slidably connected to the inner walls of the two hinge block slide grooves (47). The left and right sides of the outer wall of the slide rod (45) are respectively slidably connected to the inner walls of the two slide rod grooves (48). A welding gun rotating rod (49) is rotatably connected to the front side of the inner wall of the hinge block (46). A rotating rod push-pull block (410) is fixedly connected to the rear side of the welding gun rotating rod (49). The inner wall of the rotating rod push-pull block (410) is slidably connected to the outer wall of the slide rod (45). A welding gun connecting block (411) is fixedly connected to the front side of the welding gun rotating rod (49). A welding gun (412) is fixedly connected to the front side of the welding gun connecting block (411).

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