Resistance welding die assembly for cylindrical batteries and automatic resistance welding apparatus therefor

Abstract

The present disclosure provides a resistance welding die device for cylindrical batteries and an automatic resistance welding equipment thereof. The first fixed clamping block of the device is arranged on the workbench of the rack, and the second fixed clamping block is arranged opposite to the first fixed clamping block and is formed with a clamping cavity; the clamping cavity is used for accommodating the metal conductive rod; the insulating sleeve is arranged between the metal conductive rod and the clamping cavity; the locking member and the locking wrench are respectively located on both sides of the metal conductive rod, the first end of the first fixed clamping block is detachably arranged with the first end of the second fixed clamping block through the locking member, and the second end of the first fixed clamping block is detachably arranged with the second end of the second fixed clamping block through the locking wrench; the welding column is clamped to the metal conductive rod; the clamping side seat is arranged on one side of the first fixed clamping block, and is used for clamping and fixing the cylindrical battery; the limiting frame is arranged on the side of the workbench away from the welding column, and is connected with the metal conductive rod through the first elastic member. The device not only has simple structure and saves labor, but also can be replaced by one hand.

Description

Technical Field

[0001] This disclosure relates to the field of resistance welding technology for batteries, and in particular to a resistance welding mold device for cylindrical batteries and an automatic resistance welding equipment thereof. Background Technology

[0002] Currently, relatively mature welding processes include resistance welding, laser welding, and ultrasonic aluminum wire welding. Resistance welding, due to its lack of the need for solder, high welding efficiency, and mature technology, has been widely used in the field of battery cell welding. However, when using resistance welding, the welding rod and welding column are responsible for transmitting huge currents and pressures, and the area of ​​the welding rod is smaller than that of the welding column, resulting in a much higher damage rate for the welding rod than for the welding column. Therefore, most researchers have focused on how to quickly replace damaged welding rods. For example, Chinese patent document CN207414576U discloses a device for quickly replacing welding rods in a resistance welding machine, resulting in fewer methods for quickly replacing damaged welding columns.

[0003] Currently, when replacing a damaged welding column, due to obstruction by the clamping side seat, the operator must first use auxiliary tools to remove the bolts of the fixing seat of the resistance welding bottom mold device for cylindrical batteries. Then, one hand must press down on the metal conductive rod to lower the welding column to a position away from the clamping side seat obstruction. At this time, the pressing action of the hand must be maintained. Then, the other hand must be used to remove the damaged welding column stuck on the metal conductive rod, and the new welding column must be clipped back onto the metal conductive rod. Finally, the bolts are tightened to complete the replacement of the damaged welding column. However, the above replacement method requires both hands to operate simultaneously when disassembling and assembling the welding column, and the hand must maintain the pressing position on the metal conductive rod to complete the replacement, which is quite laborious. Utility Model Content

[0004] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide a resistance welding bottom mold device and its automatic resistance welding equipment for cylindrical batteries that are simple in structure, easy to operate, and can be replaced with one hand.

[0005] The purpose of this disclosure is achieved through the following technical solution:

[0006] A resistance welding bottom mold device for cylindrical batteries, comprising:

[0007] frame;

[0008] The fixed base includes a first fixed clamping block, a second fixed clamping block, an insulating sleeve, a metal conductive rod, a welding column, a locking wrench, and a locking component;

[0009] The first fixing clamp is disposed on the worktable of the frame, and the second fixing clamp is disposed opposite to the first fixing clamp and forms a clamping cavity; the clamping cavity is used to accommodate the metal conductive rod; the insulating sleeve is disposed between the metal conductive rod and the clamping cavity;

[0010] The locking member and the locking wrench are respectively located on both sides of the metal conductive rod. The first end of the first fixing block is detachably connected to the first end of the second fixing block through the locking member, and the second end of the first fixing block is detachably connected to the second end of the second fixing block through the locking wrench.

[0011] The welding column is snapped into the metal conductive rod;

[0012] A clamping side seat is disposed on one side of the first fixing block, and the clamping side seat is used to clamp and fix the cylindrical battery;

[0013] The anti-fall-off component includes a limiting frame and a first elastic element; the limiting frame is disposed on the side of the worktable away from the welding column, and the limiting frame is connected to the metal conductive rod through the first elastic element, thereby realizing the elastic connection between the metal conductive rod and the limiting frame.

[0014] In one embodiment, the locking wrench includes a handle, a second elastic element, and a first bolt; the handle is rotatably disposed at one end of the first bolt, the second elastic element is disposed between the handle and the first bolt, and the other end of the first bolt passes through a first mounting hole at the second end of the second fixing block and is screwed into a first threaded hole at the second end of the first fixing block.

[0015] In one embodiment, the first bolt has a gear portion formed at its end facing the handle, and the rotating portion of the handle has a meshing portion formed facing the gear portion, the meshing portion rotatably meshing with the gear portion; and / or;

[0016] The second elastic element is a spring, and the second elastic element is sleeved on the rotating part of the handle.

[0017] In one embodiment, the locking element is a second bolt, which passes through a second mounting hole at the first end of the second fixing block and is screwed into a second threaded hole at the first end of the first fixing block.

[0018] In one embodiment, the first fixing block has a receiving groove, and a first arc-shaped positioning groove is formed in the receiving groove. The second fixing block has a corresponding second arc-shaped positioning groove, and the first arc-shaped positioning groove and the second arc-shaped positioning groove together form the clamping cavity.

[0019] In one embodiment, a preset movable gap is formed between the first fixed clamping block and the second fixed clamping block, and the preset movable gap communicates with the clamping cavity.

[0020] In one embodiment, the insulating sleeve is formed with a compression receiving channel; and / or,

[0021] The insulating sleeve is an elastic insulating sleeve; and / or,

[0022] The thickness of the insulating sleeve is 1cm-5cm.

[0023] In one embodiment, the worktable has a through hole, and the metal conductive rod passes through the clamping cavity and the through hole in sequence, protruding to the bottom of the worktable.

[0024] In one embodiment, the clamping side seat has an insulating positioning cavity formed on the side facing the welding post, the positioning cavity being used to place the cylindrical battery.

[0025] An automatic resistance welding device for cylindrical batteries includes the resistance welding bottom mold device for cylindrical batteries as described in any of the above embodiments.

[0026] Compared with the prior art, this disclosure has at least the following advantages:

[0027] 1) The first fixing clamp is disposed on the worktable of the frame, and the second fixing clamp is disposed opposite to the first fixing clamp, forming a clamping cavity; the clamping cavity is used to accommodate the metal conductive rod; the insulating sleeve is disposed between the metal conductive rod and the clamping cavity to achieve insulation between the metal conductive rod and the first and second fixing clamps; furthermore, since the locking member and the locking wrench are respectively located on both sides of the metal conductive rod, the first end of the first fixing clamp is detachably connected to the first end of the second fixing clamp through the locking member, which not only clamps and fixes one side of the metal conductive rod, but also facilitates the operator to disassemble and assemble the first end of the first fixing clamp and the first end of the second fixing clamp; in conjunction with the second end of the first fixing clamp being detachably connected to the second fixing clamp through the locking wrench, which not only clamps and fixes the other side of the metal conductive rod, but also facilitates the operator to disassemble and assemble the second end of the first fixing clamp and the second fixing clamp. The second end; when it is necessary to replace the damaged weld column, the operator can directly rotate the locking wrench in the forward direction to loosen the second end of the first and second fixed clamping blocks, allowing the metal conductive rod located in the clamping cavity to move within the clamping cavity under the action of external force. This allows the operator to press the metal conductive rod to make the weld column avoid the obstruction of the clamping side seat. Then, the locking wrench is rotated in the reverse direction to lock the metal conductive rod. Next, the damaged weld column stuck on the metal conductive rod is removed, and the new weld column is clipped back onto the metal conductive rod. Then, the locking wrench is rotated in the forward direction to reset the metal conductive rod under the action of the first elastic element. Finally, the locking wrench is rotated in the reverse direction to lock the metal conductive rod, thus completing the replacement of the damaged weld column. In this way, the added locking wrench can lock and fix the pressed metal conductive rod without having to keep the hand pressing the metal conductive rod, effectively freeing the hand from pressing operation, making the operation less strenuous, and ensuring that the operator can complete the replacement operation with one hand, thus improving the replacement efficiency.

[0028] 2) Since the limiting frame is set on the side of the workbench away from the welding column, the limiting frame is connected to the metal conductive rod through the first elastic element, realizing the elastic connection between the metal conductive rod and the limiting frame. This allows the added limiting frame to provide better support for the metal conductive rod, effectively preventing the metal conductive rod from falling and damaging other accessories due to the lack of support below. At the same time, it also ensures that the metal conductive rod can automatically reset when the external force disappears. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of one direction of the resistance welding bottom mold device for a cylindrical battery according to an embodiment of the present invention.

[0031] Figure 2 for Figure 1 A schematic diagram of the resistance welding bottom mold device for cylindrical batteries from another direction;

[0032] Figure 3 for Figure 1 A cross-sectional view of the resistance welding bottom mold device for the cylindrical battery shown in the figure.

[0033] Figure 4 This is a partial enlarged view of a resistance welding bottom mold device for a cylindrical battery according to an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of an insulating sleeve according to an embodiment of the present invention;

[0035] Figure 6 This is a partial structural diagram of an automatic resistance welding device for cylindrical batteries according to an embodiment of the present invention;

[0036] Reference numerals: 1. Automatic resistance welding equipment for cylindrical batteries; 10. Resistance welding bottom mold device for cylindrical batteries; 100. Worktable; 110. Through hole; 210. First fixing clamp; 211. First threaded hole; 213. First arc-shaped positioning groove; 220. Second fixing clamp; 221. First mounting hole; 223. Second arc-shaped positioning groove; 230. Insulating sleeve; 231. Extrusion receiving channel; 232. Limiting flange; 233. Socket part; 23 31. Encapsulation cavity; 240. Metal conductive rod; 250. Welding column; 260. Locking wrench; 261. Handle; 2611. Rotating part; 262. Second elastic element; 263. First bolt; 270. Locking element; 280. Clamping cavity; 290. Preset movable gap; 300. Clamping side seat; 310. Insulating positioning cavity; 320. Limiting groove; 410. Limiting frame; 420. First elastic element; 500. Metal spacer; 20. Welding needle device. Detailed Implementation

[0037] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0038] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0040] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments:

[0041] Please refer to 1 to Figure 3 One embodiment of the resistance welding bottom mold device 10 for cylindrical batteries includes a frame, a fixed base, a clamping side seat 300, and an anti-drop component. The fixed base includes a first fixed clamping block 210, a second fixed clamping block 220, an insulating sleeve 230, a metal conductive rod 240, a welding column 250, a locking wrench 260, and a locking element 270. The first fixed clamping block 210 is disposed on the worktable 100 of the frame, and the second fixed clamping block 220 is disposed opposite to the first fixed clamping block 210, forming a clamping cavity 280. The clamping cavity 280 is used to accommodate the metal conductive rod 240, so that the metal conductive rod 240 can move within the clamping cavity 280 when not fixed, so that the operator can press the movable metal conductive rod 240. The insulating sleeve 230 is disposed between the metal conductive rod 240 and the clamping cavity 280 to achieve insulation between the metal conductive rod 240 and the first fixed clamping block 210 and the second fixed clamping block 220, thereby ensuring the normal operation of resistance welding.

[0042] It is understood that, since the locking member 270 and the locking wrench 260 are respectively located on both sides of the metal conductive rod 240, the first end of the first fixing block 210 is detachably connected to the first end of the second fixing block 220 via the locking member 270. This allows for clamping and fixing one side of the metal conductive rod 240 while also facilitating the operator's disassembly and assembly of the first end of the first fixing block 210 and the first end of the second fixing block 220. Similarly, the second end of the first fixing block 210 is detachably connected to the second end of the second fixing block 220 via the locking wrench 260. This allows for clamping and fixing the other side of the metal conductive rod 240 while also facilitating the operator's disassembly and assembly of the second end of the first fixing block 210 and the second fixing block 220. When it is necessary to replace the damaged welding column 250, the operator can directly rotate the locking wrench 260 in the forward direction to loosen the second ends of the first fixing block 210 and the second fixing block 220, thus allowing the clamping cavity to be properly positioned. Under external force, the metal conductive rod 240 inside the clamping cavity 280 can move within the clamping cavity 280, allowing the operator to press the metal conductive rod 240 to move the welding column 250 away from the obstruction of the clamping side seat 300. Then, the locking wrench 260 is rotated in the reverse direction to lock the metal conductive rod 240. Next, the damaged welding column 250 stuck on the metal conductive rod 240 is removed, and a new welding column 250 is snapped back onto the metal conductive rod 240. Then, the locking wrench 260 is rotated in the forward direction to move the metal conductive rod 240. 0 is reset under the action of the first elastic element 420, and finally the locking wrench 260 is rotated in the opposite direction to lock the metal conductive rod 240, thereby completing the replacement of the damaged welding column 250. In this way, the added locking wrench 260 can lock and fix the pressed metal conductive rod 240 without having to keep the hand pressing the metal conductive rod 240, effectively freeing the hand from pressing operation, making the operation less strenuous, and ensuring that the operator can complete the replacement operation with one hand, thus improving the replacement efficiency.

[0043] It can also be understood that since the clamping side seat 300 is located on one side of the first fixing block 210, the clamping side seat 300 is used to clamp and fix the cylindrical battery, so that the clamping side seat 300 can form a blocking limit on the first fixing block 210, so as to better prevent the welding column 250 and the cylindrical battery from falling off easily, thereby achieving better clamping and fixing of the cylindrical battery and effectively avoiding the problem of the cylindrical battery easily loosening during the welding process.

[0044] It can also be understood that the anti-fall-off component includes a limiting frame 410 and a first elastic element 420; the limiting frame 410 is set on the side of the worktable 100 away from the welding column 250, so that the welding column 250 can be located above the worktable 100 and the welding machine can be located below the worktable 100, thereby improving the compactness and stability of the resistance welding bottom mold device 10 for cylindrical batteries in vertical space, so as to better adapt to the application of automatic resistance welding equipment with narrow space; the limiting frame 410 is connected to the metal conductive rod 240 through the first elastic element 420, realizing the elastic connection between the metal conductive rod 240 and the limiting frame 410, so that the added limiting frame 410 can provide better support for the metal conductive rod 240, effectively avoiding the problem that the metal conductive rod 240 is prone to falling and damaging other accessories due to the lack of support and fixation below, while also ensuring that the metal conductive rod 240 can automatically reset when the external force disappears, so as to ensure that the replacement operation is more labor-saving.

[0045] like Figure 4 As shown, in one embodiment, the locking wrench 260 includes a handle 261, a second elastic element 262, and a first bolt 263. The handle 261 is rotatably disposed at one end of the first bolt 263, so that when the operator rotates the handle 261, the first bolt 263 is rotated, thereby loosening the second ends of the first fixing block 210 and the second fixing block 220. Since the second elastic element 262 is disposed between the handle 261 and the first bolt 263, the added first elastic element 420 ensures that the operator can rotate the handle 261 more smoothly and is less prone to jamming, thereby ensuring that the rotation operation is more effortless. Since the other end of the first bolt 263 passes through the first mounting hole 221 of the second end of the second fixing block 220 and is screwed into the first threaded hole 211 of the second end of the first fixing block 210, the second ends of the first fixing block 210 and the second ends of the second fixing block 220 are detachable, so that the operator can disassemble and assemble them.

[0046] like Figure 4 As shown, in one embodiment, the end of the first bolt 263 facing the handle 261 has a gear portion, which is composed of multiple gears; the rotating part 2611 of the handle 261 has a meshing part facing the gear portion, which meshes with the gear portion to ensure that the operator can drive the meshing part to rotate when rotating the handle 261, thereby driving the gear portion to rotate, so that the first bolt 263 follows the handle 261 to rotate, thereby locking or loosening the second end of the first fixing block 210 and the second end of the second fixing block 220.

[0047] In one embodiment, the second elastic element 262 is a spring, and the second elastic element 262 is sleeved on the rotating part 2611 of the handle 261 to ensure that the operator can rotate the handle 261 smoothly without jamming.

[0048] It is worth mentioning that the above describes one method of detaching the locking wrench 260 from the second ends of the first fixing block 210 and the second fixing block 220. Those skilled in the art can also choose other methods from the prior art to achieve the detachable connection between the locking wrench 260 and the second ends of the first fixing block 210 and the second fixing block 220.

[0049] In one embodiment, the locking member 270 is a second bolt, which passes through the second mounting hole at the first end of the second fixing block 220 and is screwed into the second threaded hole at the first end of the first fixing block 210, so as to realize the detachable setting of the locking member 270 to the first end of the first fixing block 210 and the first end of the second fixing block 220.

[0050] In one embodiment, the end of the second bolt is provided with a positioning part, which can be engaged with an external auxiliary tool, such as an internal hexagonal socket, to achieve locking and loosening of the second bolt, so as to better adapt to the clamping and fixing of metal conductive rods 240 of different sizes.

[0051] like Figure 3 As shown, in one embodiment, the first fixing clamp 210 has a receiving groove, and a first arc-shaped positioning groove 213 is formed in the receiving groove. The second fixing clamp 220 has a corresponding second arc-shaped positioning groove 223. The first arc-shaped positioning groove 213 and the second arc-shaped positioning groove 223 together form the clamping cavity 280, so as to divide the clamping cavity 280 into two halves. On the one hand, it is convenient for the operator to assemble, and on the other hand, it can better adapt to the clamping and fixing of metal conductive rods 240 of different specifications.

[0052] It should be noted that in practical applications, the rotation locking structure of the locking wrench 260 usually requires the additional use of a limiting protrusion to clamp and fix the metal conductive rod 240, which results in a relatively complex structure. Therefore, in this disclosure, by using the locking member 270 with the first end of the first fixing block 210 and the second fixing block 220 as a fixed fulcrum, and the locking wrench 260 with the second end of the first fixing block 210 and the second fixing block 220 as a movable point, when the operator rotates the locking wrench 260, the second ends of the first fixing block 210 and the second fixing block 220 are loosened, so that the metal conductive rod 240 located in the middle of the locking member 270 and the locking wrench 260 is in an unlocked state, making it easy for the operator to press the metal conductive rod 240. This eliminates the need for the additional use of a limiting protrusion, simplifying the structure of the resistance welding bottom mold device 10 for cylindrical batteries and making operation easier.

[0053] It should be noted that although the addition of the locking wrench 260 solves the problem of simple structure and easy operation to some extent, since the first fixing block 210 and the second fixing block 220 are set separately, in order to ensure reliable and stable clamping and fixing of the metal conductive rod 240, most scholars will use the locking part 270 and the locking wrench 260 to directly lock the first fixing block 210 and the second fixing block 220 completely together, that is, there is no gap between the first fixing block 210 and the second fixing block 220. However, the zero-gap locking method between the first fixing block 210 and the second fixing block 220 prevents the second fixing block 220 from having any room to move. This means that the operator needs to loosen both the locking wrench 260 and the locking member 270 at the same time, or needs to completely unscrew the locking wrench 260 from the first fixing block 210 before the subsequent pressing of the metal conductive rod 240 can be completed. This makes the replacement operation more complicated and time-consuming, thereby reducing the efficiency of replacing the welding column 250.

[0054] Therefore, as Figure 4 As shown, in one embodiment, a preset movable gap 290 is formed between the first fixed clamping block 210 and the second fixed clamping block 220. The preset movable gap 290 is connected to the clamping cavity 280. The added preset movable gap 290 can provide movable space for the second fixed clamping block 220. When the operator rotates the locking wrench 260, the second end of the second fixed clamping block 220 can use the first end as a fixed fulcrum to loosen the second ends of the first fixed clamping block 210 and the second fixed clamping block 220. In this way, it is not necessary to loosen the locking wrench 260 and the locking member 270 at the same time, and it is not necessary to completely unscrew the locking wrench from the first fixed clamping block 210 to complete the loosening of the second ends of the first fixed clamping block 210 and the second fixed clamping block 220. This not only makes the operation simple and time-saving, but also effectively improves the efficiency of replacing the welding column 250.

[0055] In one embodiment, the insulating sleeve 230 is an elastic insulating sleeve 230, which ensures that the elastic insulating sleeve 230 can deform well under the action of external force, making it convenient for the operator to put on metal conductive rods 240 of different specifications, and at the same time, it can also achieve clamping and fixing of metal conductive rods 240 of different specifications.

[0056] In one embodiment, the thickness of the insulating sleeve 230 is 1cm-5cm.

[0057] It should be noted that although the added preset movable gap 290 can provide movable space for the second end of the second fixed clamping block 220 and can reliably and stably clamp and fix the metal conductive rod 240, this will cause the insulating sleeve 230 to be easily damaged due to repeated large compression.

[0058] Therefore, as Figure 5 As shown, in one embodiment, the insulating sleeve 230 has a compression receiving channel 231. The addition of the compression receiving channel 231 facilitates compression deformation, making it easier for the operator to quickly lock and fix the first fixing block 210 and the second fixing block 220. Furthermore, the addition of the compression receiving channel 231 facilitates the operator to assemble and fit metal conductive rods 240 of different specifications, ensuring that a single insulating sleeve 230 can be adapted to metal conductive rods 240 of different specifications. This eliminates the need for the operator to frequently replace the insulating sleeve 230, thereby improving the adaptability of the resistance welding bottom mold device 10 for cylindrical batteries to metal conductive rods 240 of different specifications.

[0059] like Figure 5 As shown, in one embodiment, the compression receiving channel 231 extends along the length of the insulating sleeve 230 so that the compression receiving channel 231 completely penetrates the longitudinal plane of the outer peripheral wall of the insulating sleeve 230, forming a notch on one side of the insulating sleeve 230. This facilitates the operator to bend the insulating sleeve 230 to complete the fitting operation of metal conductive rods 240 of different specifications. On the other hand, the compression receiving channel 231 can provide a more comprehensive compression deformation space for the longitudinal plane of the insulating sleeve 230, so as to achieve a stable clamping force on the metal conductive rod 240.

[0060] In one embodiment, the insulating sleeve 230 includes a limiting flange 232 and a sleeve portion 233 connected to each other, so that the limiting flange 232 can be engaged in the through hole 110 of the worktable 100 to realize the engagement between the worktable 100 and the insulating sleeve 230; a wrapping cavity 2331 is formed in the sleeve portion 233, and a compression receiving channel 231 communicating with the wrapping cavity 2331 is formed on the outer peripheral wall of the wrapping cavity 2331, and the compression receiving channel 231 extends from one end of the sleeve portion 233 to the end of the limiting flange 232 away from the sleeve portion 233, that is, the compression receiving channel 231 is arranged along the length direction of the sleeve portion 233 and extends to the end of the limiting flange 232 away from the sleeve portion 233, so that the compression receiving channel 231 completely penetrates the longitudinal plane of the outer peripheral wall of the insulating sleeve 230.

[0061] like Figure 2 and Figure 3 As shown, in one embodiment, the resistance welding bottom mold device 10 for cylindrical batteries further includes a metal spacer 500. The metal spacer 500 is sleeved on the outer peripheral wall of the metal conductive rod 240 and abuts against the limiting flange 232 of the insulating sleeve 230, so that the added metal spacer 500 can provide better structural support for the elastic insulating sleeve 230, thereby improving the service life of the elastic insulating sleeve 230.

[0062] In one embodiment, the metal spacer 500 can be locked and fixed to one side of the metal conductive rod 240 by screws, so that the metal spacer 500 abutting against the limiting flange 232 of the insulating sleeve 230 can be insulated from the elastic insulating sleeve 230 and the metal conductive rod 240. At the same time, it also ensures the reliability of the connection between the metal spacer 500 and the elastic insulating sleeve 230 and the metal conductive rod 240, effectively avoiding the problem of the metal spacer 500 easily falling off during welding.

[0063] like Figure 2 As shown, in one embodiment, the worktable 100 has a through hole 110, and the metal conductive rod 240 passes through the clamping cavity 280 and the through hole 110 in sequence, and protrudes to the bottom of the worktable 100, so that the metal conductive rod 240 can be electrically connected to the welding machine located below the worktable 100, thereby improving the compactness and stability of the resistance welding bottom mold device 10 for cylindrical batteries in vertical space distribution, so as to better adapt to the application of automatic resistance welding equipment with narrow space.

[0064] like Figure 1 and Figure 2 As shown, in one embodiment, the clamping side seat 300 has an insulating positioning cavity 310 formed on the side facing the welding post 250, so as to realize the insulation between the clamping side seat 300 and the cylindrical battery; and since the positioning cavity is used to place the cylindrical battery, the cylindrical battery is fixed.

[0065] like Figure 1 and Figure 2 As shown, in one embodiment, the clamping side seat 300 facing the welding column 250 also forms a limiting groove 320 that communicates with the insulating positioning cavity 310. The added limiting groove 320 can effectively prevent the welding column 250 from falling off during the welding process, thereby ensuring the reliable stability of welding cylindrical batteries.

[0066] like Figure 6 As shown, this disclosure also provides an automatic resistance welding device 1 for cylindrical batteries, including the resistance welding mold device 10 for cylindrical batteries described in any of the above embodiments. The automatic resistance welding device further includes a welding needle device 20 and a welding machine. The welding needle device 20 is movably disposed on the worktable 100, and the welding needle of the welding needle device 20 is positioned opposite to the welding column 250. The welding machine is located below the worktable 100 and is electrically connected to the end of the metal conductive rod 240 away from the welding column 250 to provide current for welding, thereby ensuring the normal operation of the resistance welding. Furthermore, the resistance welding mold device 10 for cylindrical batteries of this disclosure allows the operator to replace the welding column 250 with one hand, which is not only simple to operate but also labor-saving, effectively improving the efficiency of replacing the welding column 250.

[0067] It should be noted that the connection structure of the welding needle device 20 movably disposed on the worktable 100, the specific structure of the welding needle device 20, the connection structure between the welding machine and the metal conductive rod 240, and the specific structure of the welding machine are all prior art. Therefore, they will not be described in detail in this disclosure.

[0068] Compared with the prior art, this disclosure has at least the following advantages:

[0069] 1) Since the first fixing block 210 is disposed on the worktable 100 of the frame, the second fixing block 220 is disposed opposite to the first fixing block 210 and forms a clamping cavity 280; the clamping cavity 280 is used to accommodate the metal conductive rod 240; the insulating sleeve 230 is disposed between the metal conductive rod 240 and the clamping cavity 280 to achieve insulation between the metal conductive rod 240 and the first fixing block 210 and the second fixing block 220; and since the locking member 270 and the locking wrench 260 are respectively located on both sides of the metal conductive rod 240, the first The first end of the fixing clamp 210 is detachably connected to the first end of the second fixing clamp 220 via the locking member 270. This allows for clamping and fixing one side of the metal conductive rod 240 while also facilitating the operator's disassembly and assembly of the first end of the first fixing clamp 210 and the first end of the second fixing clamp 220. Similarly, the second end of the first fixing clamp 210 is detachably connected to the second end of the second fixing clamp 220 via the locking wrench 260. This allows for clamping and fixing the other side of the metal conductive rod 240 while also facilitating the operator's disassembly and assembly of the second end of the first fixing clamp 210 and the second fixing clamp 220. The second end of block 220; when it is necessary to replace the damaged weld post 250, the operator can directly rotate the locking wrench 260 in the forward direction to loosen the second ends of the first fixing block 210 and the second fixing block 220, so that the metal conductive rod 240 located in the clamping cavity 280 can move within the clamping cavity 280 under the action of external force, so that the operator can press the metal conductive rod 240 to make the weld post 250 avoid the position blocked by the clamping side seat 300. Then, rotate the locking wrench 260 in the reverse direction to lock the metal conductive rod 240. Then, remove the damaged weld post 250 stuck on the metal conductive rod 240, and then the new... The welding post 250 is snapped back onto the metal conductive rod 240. Then, the locking wrench 260 is rotated forward to reset the metal conductive rod 240 under the action of the first elastic element 420. Finally, the locking wrench 260 is rotated in reverse to lock the metal conductive rod 240, thus completing the replacement of the damaged welding post 250. In this way, the added locking wrench 260 can lock and fix the pressed metal conductive rod 240 without having to keep the hand pressing the metal conductive rod 240, effectively freeing the hand from pressing operation, making the operation less strenuous, and ensuring that the operator can complete the replacement operation with one hand, thus improving the replacement efficiency.

[0070] 2) Since the limiting frame 410 is set on the side of the workbench 100 away from the welding column 250, the limiting frame 410 is connected to the metal conductive rod 240 through the first elastic member 420, realizing the elastic connection between the metal conductive rod 240 and the limiting frame 410. This allows the added limiting frame 410 to provide better support for the metal conductive rod 240, effectively avoiding the problem that the metal conductive rod 240 is prone to falling and damaging other accessories due to the lack of support and fixation below. At the same time, it also ensures that the metal conductive rod 240 can automatically reset when the external force disappears.

[0071] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the disclosed patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A resistance welding bottom mold device for cylindrical batteries, characterized in that, include: frame; The fixed base includes a first fixed clamping block, a second fixed clamping block, an insulating sleeve, a metal conductive rod, a welding column, a locking wrench, and a locking component; The first fixing clamp is disposed on the worktable of the frame, and the second fixing clamp is disposed opposite to the first fixing clamp and forms a clamping cavity; the clamping cavity is used to accommodate the metal conductive rod; the insulating sleeve is disposed between the metal conductive rod and the clamping cavity; The locking member and the locking wrench are respectively located on both sides of the metal conductive rod. The first end of the first fixing block is detachably connected to the first end of the second fixing block through the locking member, and the second end of the first fixing block is detachably connected to the second end of the second fixing block through the locking wrench. The welding column is snapped onto the metal conductive rod; A clamping side seat is disposed on one side of the first fixing block, and the clamping side seat is used to clamp and fix the cylindrical battery; The anti-fall-off component includes a limiting frame and a first elastic element; the limiting frame is disposed on the side of the worktable away from the welding column, and the limiting frame is connected to the metal conductive rod through the first elastic element, thereby realizing the elastic connection between the metal conductive rod and the limiting frame.

2. The resistance welding bottom mold device for cylindrical batteries according to claim 1, characterized in that, The locking wrench includes a handle, a second elastic element, and a first bolt; the handle is rotatably disposed at one end of the first bolt, the second elastic element is disposed between the handle and the first bolt, and the other end of the first bolt passes through the first mounting hole at the second end of the second fixing block and is screwed into the first threaded hole at the second end of the first fixing block.

3. The resistance welding bottom mold device for cylindrical batteries according to claim 2, characterized in that, The first bolt has a gear portion formed at its end facing the handle, and the rotating portion of the handle has a meshing portion formed facing the gear portion, the meshing portion rotatably meshing with the gear portion; and / or; The second elastic element is a spring, and the second elastic element is sleeved on the rotating part of the handle.

4. The resistance welding bottom mold device for cylindrical batteries according to claim 1, characterized in that, The locking element is a second bolt, which passes through the second mounting hole at the first end of the second fixing block and is screwed into the second threaded hole at the first end of the first fixing block.

5. The resistance welding bottom mold device for cylindrical batteries according to claim 1, characterized in that, The first fixing block has a receiving groove, and a first arc-shaped positioning groove is formed in the receiving groove. The second fixing block has a corresponding second arc-shaped positioning groove. The first arc-shaped positioning groove and the second arc-shaped positioning groove together form the clamping cavity.

6. The resistance welding bottom mold device for cylindrical batteries according to claim 5, characterized in that, A preset movable gap is formed between the first fixed clamping block and the second fixed clamping block, and the preset movable gap is connected to the clamping cavity.

7. The resistance welding bottom mold device for cylindrical batteries according to claim 6, characterized in that, The insulating sleeve has a compression receiving channel; and / or The insulating sleeve is an elastic insulating sleeve; and / or, The thickness of the insulating sleeve is 1cm-5cm.

8. The resistance welding bottom mold device for cylindrical batteries according to claim 1, characterized in that, The worktable has a through hole, and the metal conductive rod passes through the clamping cavity and the through hole in sequence, and protrudes to the bottom of the worktable.

9. The resistance welding bottom mold device for cylindrical batteries according to claim 1, characterized in that, An insulating positioning cavity is formed on the side of the clamping side facing the welding column, and the positioning cavity is used to place the cylindrical battery.

10. An automatic resistance welding device for cylindrical batteries, characterized in that, The device includes a resistance welding bottom mold apparatus for cylindrical batteries according to any one of claims 1-9.

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