Automatic welding device for battery production

Abstract

The invention discloses an automatic welding device for battery production, and relates to the technical field of battery production welding, the automatic welding device comprises a welding mechanism, the welding mechanism comprises a cabinet, the cabinet is provided with an index plate assembly, the index plate assembly comprises a stand column fixed on the cabinet, and the surface of the stand column is rotatably provided with a turntable; clamping pieces distributed in a circumferential array mode are fixed to the rotating disc, a supporting frame is fixed to the clamping pieces, a placing frame is fixed to the upper end of the supporting frame, and an air cylinder is fixed to the upper end of the stand column. Through the conical column-rubber ring elastic positioning piece, after the tab is placed in the positioning groove, the first spring drives the rubber ring to elastically abut against the tab, falling caused by rotation vibration is avoided, meanwhile, the tab is not damaged by flexible contact of the rubber ring, and through transmission of the torsional spring and the conical teeth, the conical tooth ring is driven to rotate to store torsion when the tab is placed; after mechanical separation, the torsional spring resets to drive the rubber ring to rotate, the tab is pushed to be tightly attached to the battery welding position, and the welding precision is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of welding technology in battery production, and in particular to an automatic welding device for battery production. Background Technology

[0002] A battery is a portable energy storage and output device that directly converts chemical energy into electrical energy through electrochemical oxidation-reduction reactions. It can realize the "storage-release" cycle of electrical energy (rechargeable battery) or single release (disposable battery). It is widely used in consumer electronics, new energy vehicles, energy storage systems, industrial equipment and other fields. It is an indispensable core component of energy supply in modern society. In the electrode tab welding process of battery production, the electrode tabs need to be precisely attached to the battery welding position before laser welding.

[0003] However, in practical applications, there are still some unresolved problems. The following are some common problems of automatic welding equipment used in battery production: First, the tab positioning is unstable. When the device rotates, the tab is easy to fall off the positioning groove due to vibration or centrifugal force, resulting in welding interruption. Second, the tab is not tightly attached to the battery. After the tab is placed manually or mechanically, gaps are easy to appear, affecting the welding quality (such as poor welding or desoldering). Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing automated welding equipment for battery production, the present invention is proposed.

[0006] Therefore, the problem to be solved by this invention is how to solve the problems of unstable electrode positioning and poor adhesion between the electrode and the battery.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an automatic welding device for battery production, comprising a welding mechanism including a cabinet, an indexing plate assembly mounted on the cabinet, the indexing plate assembly including a column fixed to the cabinet, a turntable rotating on the surface of the column, clamping members arranged in a circular pattern fixed on the turntable, a support frame fixed on the clamping members, a placement frame fixed at the upper end of the support frame, a cylinder fixed at the upper end of the column, a push plate fixed at the output end of the cylinder, and a fixed... The device includes a top plate with a locking block fixed to one end surface, a drive unit for driving the turntable to rotate installed on the cabinet, and a positioning and fitting mechanism installed on a placement rack. The mechanism includes a slot and a circular groove formed within the placement rack, a positioning and fitting component installed on the inner wall of the circular groove, an unlocking push component installed on the placement rack, the unlocking push component cooperating with the top plate and the positioning and fitting component, a fixing component installed on the unlocking push component, the fixing component cooperating with the locking block, and an anti-stick component installed on the placement rack, the anti-stick component cooperating with the unlocking push component.

[0008] As a preferred embodiment of the automatic welding device for battery production described in this invention, the welding mechanism further includes a material handling assembly, a material handling assembly, a small material handling and rotating assembly, a welding assembly, and a material unloading assembly fixed to the top of the cabinet, and a vibratory feeder is installed on one side of the cabinet.

[0009] As a preferred embodiment of the automatic welding device for battery production described in this invention, the top of the cabinet is respectively fixed with a loading assembly line and a unloading assembly line, the loading assembly line is located on one side of the loading and handling component, the unloading assembly line is located on one side of the unloading and handling component, and the top of the cabinet is fixed with a box body with a door.

[0010] As a preferred embodiment of the automatic welding device for battery production described in this invention, the positioning and bonding component includes a conical column that slides in a circular groove, a spring fixed between one end of the conical column and the inner wall of the circular groove, a rotating column that rotates within one end of the conical column, a rotating wheel fixed at the upper end of the rotating column, and a rubber ring fixedly sleeved on the surface of the rotating wheel.

[0011] As a preferred embodiment of the automatic welding device for battery production described in this invention, a rotating rod is rotatably mounted inside the conical column. A sleeve is fitted onto the surface of the rotating rod, with one end of the sleeve sliding on the conical column and the other end of the sleeve fixed to the inner wall of a circular groove. A driving groove is formed in the inner wall of the sleeve. A ball bearing is embedded at one end of the rotating rod located within the inner cavity of the sleeve, and the ball bearing slides within the driving groove. A bevel gear is fixed to the other end of the rotating rod. A bevel gear ring rotates inside the conical column and meshes with the bevel gear. A torsion spring is fitted onto the surface of the rotating column, and both ends of the torsion spring are fixed to the surface of the rotating column and the inner wall of the bevel gear ring, respectively.

[0012] As a preferred embodiment of the automatic welding device for battery production described in this invention, the cone column is provided with a trigger groove that cooperates with the unlocking pusher, a slider is fixed on the surface of the cone column, a sliding groove is provided on the inner wall of the circular groove, and the slider slides in the sliding groove.

[0013] In a preferred embodiment of the automatic welding device for battery production described in this invention, the unlocking pusher includes a movable plate that slides within a groove. The movable plate has a guide groove 1 and a guide groove 2. A movable rod slides within the placement frame. One end of the movable rod is fixed with a guide post 1, which slides within the guide groove 1. An unlocking block is fixed to the surface of the other end of the movable rod, and the unlocking block cooperates with a trigger groove. The movable rod passes through the trigger groove and slides on a conical column. A push rod slides within the placement frame. One end of the push rod is fixed with a guide post 2, which slides within the guide groove 2. Push blocks 1 and 2 are fixed to the two ends of the push rod furthest from the guide post 2, respectively.

[0014] As a preferred embodiment of the automatic welding device for battery production described in this invention, a drive plate slides on the placement rack, a guide hole is provided on the drive plate, a guide post three is fixed at one end of the moving plate and slides in the guide hole, a square hole is provided on the drive plate for its movement on the placement rack, a spring two is fixed between the inner wall of the square hole and the surface of the placement rack, and a limit block is fixed on one side of the drive plate.

[0015] As a preferred embodiment of the automatic welding device for battery production described in this invention, a connecting rod slides on the drive plate, a buckle block slides on one end of the connecting rod and the buckle block cooperates with a locking block, a spring piece is fixed between the inner wall of the buckle block and the surface of the connecting rod, an unlocking groove is provided on the buckle block, an unlocking plate slides on the inner wall of the unlocking groove and one end of the unlocking plate is fixed to the surface of the drive plate, a block is fixed to the other end of the connecting rod, a spring three is sleeved on the surface of the connecting rod near the block, and the two ends of the spring three are respectively fixed to the surface of the block and the surface of the drive plate.

[0016] As a preferred embodiment of the automatic welding device for battery production described in this invention, the anti-stick component includes an air cavity formed in a placement frame, a piston sliding on the inner wall of the air cavity, and the piston cooperating with a moving rod, a spring fixed between the piston surface and the inner wall of the air cavity, an air bag fixed on the placement frame, a connecting pipe communicating with the surface of the air bag, the connecting pipe passing through the placement frame and communicating with the air cavity, and one end of the moving rod extending into the inner cavity of the air cavity.

[0017] The beneficial effects of this invention are as follows: 1. With the "conical column-rubber ring" elastic positioning component, after the electrode tab is placed in the positioning groove, the spring drives the rubber ring to elastically press against the electrode tab, avoiding rotational vibration that could cause it to fall off. At the same time, the flexible contact of the rubber ring does not damage the electrode tab. Through the torsion spring and bevel gear transmission, when the electrode tab is placed, the bevel gear ring is driven to rotate and store torque. After the mechanical separation, the torsion spring resets and drives the rubber ring to rotate, pushing the electrode tab to fit tightly against the battery welding position, ensuring welding accuracy.

[0018] 2. Through the airbag design of the anti-stick component, the airbag is inflated to fill the gap during welding to avoid the adhesion of welding slag. When the welding is completed and the material is unloaded, the airbag is deflated and pushed synchronously with the push plate to ensure that the battery is smoothly detached. This device integrates the loading / unloading production line, vibratory plate, indexing plate, etc., to achieve full automation of "loading-positioning-welding-unloading", and is compatible with existing battery production lines without additional modification. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 The overall three-dimensional structure of an automated welding device for battery production Figure 1 .

[0021] Figure 2 The overall three-dimensional structure of an automated welding device for battery production Figure 2 .

[0022] Figure 3 Three-dimensional partial structure of an automated welding device for battery production Figure 1 .

[0023] Figure 4 Three-dimensional partial structure of an automated welding device for battery production Figure 2 .

[0024] Figure 5 A perspective view of the misfit assembly of an automated welding device used in battery production.

[0025] Figure 6 A perspective view of the turntable and clamping components of an automated welding apparatus used in battery production.

[0026] Figure 7 This is a perspective view of the drive components and clamping components of an automated welding device used in battery production.

[0027] Figure 8A perspective view of the mounting rack and cylinders for an automated welding device used in battery production.

[0028] Figure 9 Automated welding equipment for battery production Figure 8 Enlarged view of region A in the middle.

[0029] Figure 10 Partial cross-sectional three-dimensional view of the mounting rack for an automated welding device used in battery production. Figure 1 .

[0030] Figure 11 Automated welding equipment for battery production Figure 10 Enlarged view of region B in the middle.

[0031] Figure 12 Partial cross-sectional three-dimensional view of the mounting rack for an automated welding device used in battery production. Figure 2 .

[0032] Figure 13 Partial cross-sectional three-dimensional view of the mounting rack for an automated welding device used in battery production. Figure 3 .

[0033] Figure 14 A partial sectional perspective view of the mounting frame and conical column of an automated welding device used in battery production.

[0034] Figure 15 Automated welding equipment for battery production Figure 14 Enlarged view of region C.

[0035] Figure 16 Automated welding equipment for battery production Figure 14 Enlarged view of region D in the middle.

[0036] Figure 17 This is a partial sectional plan view of the mounting rack for an automated welding device used in battery production.

[0037] Figure 18 Three-dimensional structure for placement racks and moving plates of automated welding equipment used in battery production. Figure 1 .

[0038] Figure 19 Automated welding equipment for battery production Figure 18 Enlarged view of region E in the middle.

[0039] Figure 20 Automated welding equipment for battery production Figure 18 Enlarged view of the F region.

[0040] Figure 21 Three-dimensional structure for placement racks and moving plates of automated welding equipment used in battery production. Figure 2 .

[0041] Figure 22 Automated welding equipment for battery production Figure 21 Enlarged view of the G region.

[0042] Figure 23 A partial sectional perspective view of the fasteners and unlocking plates of an automated welding device used in battery production.

[0043] In the diagram: 1. Welding mechanism; 11. Cabinet; 12. Indexing plate assembly; 13. Loading and handling assembly; 14. Material handling assembly; 15. Small material handling and rotating assembly; 16. Welding assembly; 17. Unloading and handling assembly; 18. Vibratory feeder; 19. Loading production line; 110. Unloading production line; 111. Housing; 121. Column; 122. Turntable; 123. Clamping component; 124. Support frame; 125. Placement rack ; 126. Cylinder; 127. Push plate; 128. Top plate; 1281. Locking block; 129. Driving component; 2. Positioning and fitting mechanism; 21. Groove; 22. Circular groove; 23. Positioning and fitting component; 24. Unlocking push component; 25. Fixing component; 26. Anti-stick component; 231. Conical column; 232. Spring 1; 233. Rotating column; 234. Rotating wheel; 235. Rubber ring; 236. Rotating rod; 237. Sleeve; 2 38. Drive slot; 239. Ball bearing; 2310. Bevel gear; 2311. Bevel gear ring; 2312. Torsion spring; 2313. Trigger slot; 2314. Slider; 2315. Slide groove; 241. Moving plate; 242. Guide groove one; 243. Guide groove two; 244. Moving rod; 245. Guide post one; 246. Unlocking block; 247. Push rod; 248. Guide post two; 249. Push block one; 2410. Push block II; 2411, Drive plate; 2412, Guide hole; 2413, Guide post III; 2414, Square hole; 2415, Spring II; 2416, Limiting block; 251, Connecting rod; 252, Buckle block; 253, Spring piece; 254, Unlocking groove; 255, Unlocking plate; 256, Square block; 257, Spring III; 261, Air chamber; 262, Piston; 263, Spring IV; 264, Airbag; 265, Connecting tube. Detailed Implementation

[0044] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0046] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0047] Example 1, referring to Figures 1-12 This is the first embodiment of the present invention. This embodiment provides an automatic welding device for battery production. The automatic welding device for battery production includes a welding mechanism 1 and a positioning and bonding mechanism 2.

[0048] Specifically, the welding mechanism 1 includes a cabinet 11, on which an indexing plate assembly 12 is installed. Through the design of the indexing plate assembly 12, multiple processing stations are set on it to meet the different processing operations of each station during intermittent rotation. The indexing plate assembly 12 includes a column 121 fixed on the cabinet 11, and a turntable 122 rotating on the surface of the column 121. The turntable 122 is rotatably connected to the column 121 through bearings. Clamping parts 123 arranged in a circular row are fixed on the turntable 122.

[0049] The turntable 122 is equipped with four clamping parts 123, which are distributed to the four workstations of battery loading, tab loading, welding and unloading. It can perform cyclic continuous processing operations, which greatly improves the processing efficiency, saves a lot of labor costs, and ensures that each processing position does not stop. The clamping parts 123 can realize the fixing and unlocking operations of the battery. This is the prior art. The working principle of this part is also the prior art, which can be clearly understood by those skilled in the art, and will not be described in detail here.

[0050] A support frame 124 is fixed on the clamping member 123, and a placement frame 125 is fixed on the upper end of the support frame 124. Two support frames 124 are provided on one clamping member 123, which serve to support the placement frame 125 and limit the clamped battery. Positioning grooves for placing tabs are opened at both ends of one placement frame 125, which facilitates the subsequent small material handling rotating assembly 15 to transport the tabs on the misalignment assembly 14 into the positioning grooves on the placement frame 125, so that the welding assembly 16 can perform laser welding between the battery and the tabs.

[0051] A cylinder 126 is fixed to the upper end of the column 121, and a push plate 127 is fixed to the output end of the cylinder 126. With the setting of the push plate 127, when the cylinder 126 moves, after the clamping member 123 releases the limit on the battery, the battery with the welded tabs can be pushed, so that the part of the battery located below the placement rack 125 is moved out, so as to avoid obstruction when the unloading and handling assembly 17 moves the battery. A top plate 128 is fixed on the push plate 127, and a locking block 1281 is fixed on one end surface of the top plate 128. A drive member 129 for driving the turntable 122 to rotate is installed on the cabinet 11.

[0052] The top plate 128 and the locking block 1281 facilitate the action of the unlocking pusher 24 on the positioning and bonding mechanism 2 when the pusher plate 127 moves, thereby acting on the positioning and bonding component 23 to release the fixing of the electrode tab in the positioning groove on the placement frame 125 after welding. At the same time, it can assist the pusher tab and the pusher plate 127 to move together when pushing the battery, avoiding the situation where only the bottom of the battery is subjected to force when the pusher plate 127 pushes the battery, resulting in uneven force and causing the battery to tilt. If tilting occurs, the electrode tab will not be moved out of the placement frame 125, and the tilting and bending will cause the newly welded electrode tab and battery to break. The drive component 129 can realize the intermittent rotation of the turntable 122, which is the prior art. The working principle of this part is the prior art, which can be clearly understood by those skilled in the art, and will not be described in detail here.

[0053] Specifically, the positioning and fitting mechanism 2 is installed on the placement frame 125 and includes a groove 21 and a circular groove 22 opened in the placement frame 125. The inner wall of the circular groove 22 is fitted with a positioning and fitting component 23. Multiple circular grooves 22 are provided at both ends of a placement frame 125, and the number of circular grooves 22 is the same as the number of positioning and fitting components 23. The circular grooves 22 are connected to the positioning groove.

[0054] By setting the positioning and bonding component 23, when the electrode tab is placed in the positioning groove in the placement frame 125 by the small material transport rotating component 15, the electrode tab can be clamped and fixed. This prevents the electrode tab from loosening and detaching from the placement frame 125 due to vibration or centrifugal force when the turntable 122 rotates and drives the clamping component 123, battery, support frame 124, placement frame 125 and electrode tab to the welding component 16 position, which would affect the subsequent welding operation. Furthermore, when the small material transport rotating component 15 detaches from the electrode tab, it can provide a moving force to the electrode tab, so that the lower end of the electrode tab is attached to the position of the battery to be welded, ensuring the welding quality of the electrode tab and the battery in the future.

[0055] The placement rack 125 is equipped with an unlocking pusher 24, which cooperates with the top plate 128 and the positioning fitting 23 respectively. With the setting of the unlocking pusher 24, when the battery after welding is rotated to the unloading position, when the cylinder 126 pushes the push plate 127 and the top plate 128 to move, the top plate 128 acts on it, so that the positioning fitting 23 releases the clamp on the electrode tab, avoiding obstruction when the electrode tab moves out of the positioning groove on the placement rack 125. Moreover, when the push plate 127 just contacts and pushes the battery to move, it can push the electrode tab to move synchronously, avoiding the situation where the bottom of the tilted placement rack 125 is blocked by force and the welding position is broken, ensuring that the welded battery is unloaded intact.

[0056] A fixing member 25 is installed on the unlocking pusher 24, and the fixing member 25 cooperates with the locking block 1281. Through the setting of the fixing member 25, when the top plate 128 drives the locking block 1281 to move and act on the unlocking pusher 24, it can fix them together. When the top plate 128 and the locking block 1281 move back, they can pull the unlocking pusher 24 back to its original position at the same time. After resetting, the fixing between them can be unlocked without affecting the subsequent rotation of the turntable 122 to drive the rotation of the clamping member 123, the placement frame 125 and the positioning and bonding mechanism 2. At the same time, the push plate 127, the top plate 128 and the locking block 1281 can still act on the unlocking pusher 24 in the positioning and bonding mechanism 2 on the next rotating clamping member 123 and the placement frame 125.

[0057] An anti-sticking component 26 is installed on the placement rack 125, and the anti-sticking component 26 cooperates with the unlocking push component 24. By setting the anti-sticking component 26, the welding slag spatter can be prevented from solidifying between the battery and the placement rack 125 under the action of the unlocking push component 24. When the unlocking push component 24 acts to position the fitting component 23 to release the clamp on the tab, the air bladder 264 on the anti-sticking component 26 can contract to prevent the battery from sticking to the placement rack 125. At the same time, the welding slag will not connect the battery and the placement rack 125 under the action of solidification, and the battery can be smoothly pushed out of the placement rack 125.

[0058] Example 2, refer to Figures 3 to 16 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0059] Specifically, the welding mechanism 1 also includes a loading and conveying assembly 13, a material handling assembly 14, a small material handling and rotating assembly 15, a welding assembly 16, and an unloading and conveying assembly 17 fixed to the top of the cabinet 11. A vibratory feeder 18 is installed on one side of the cabinet 11. The loading and conveying assembly 13 can load the battery and transport it into the clamping member 123. Then, the clamping member 123 clamps and pushes the battery to move so that the position to be welded is placed below the positioning groove on the placement rack 125. With the setting of the vibratory feeder 18, the small electrode tabs can be continuously conveyed and transported to the material handling assembly 14.

[0060] With the small material handling rotating assembly 15 in place, after the clamping member 123 holding the battery in the loading clamp rotates into position, the small electrode tabs on the misalignment assembly 14 can be transported to the positioning slots on the placement rack 125. Then, the empty positions on the misalignment assembly 14 are filled by the next electrode tab under the action of the vibrating plate 18. The small material handling rotating assembly 15 is divided into left and right handling rotating assemblies, which can simultaneously transport and place two electrode tabs. The welding method of the welding assembly 16 is laser welding.

[0061] With the setting of the unloading and conveying component 17, after the battery and the tab are welded, after rotating to the corresponding position, the clamping component 123 releases the battery from the fixation. At the same time, the cylinder 126 pushes the push plate 127 and the top plate 128 to move. With the cooperation of the unlocking push component 24, the battery is pushed out from under the placement rack 125, which can unload the welded battery. The loading and conveying component 13, the misalignment component 14, the small material conveying and rotating component 15, the welding component 16, the unloading and conveying component 17 and the vibratory plate 18 are all existing technologies. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here.

[0062] Specifically, a loading conveyor line 19 and a unloading conveyor line 110 are fixed on the top of the cabinet 11. The loading conveyor line 19 is located on one side of the loading and handling component 13, and the unloading conveyor line 110 is located on one side of the unloading and handling component 17. A cabinet 111 with a door is fixed on the top of the cabinet 11. The loading conveyor line 19 can transport the batteries to be welded to the loading and handling component 13, and the unloading conveyor line 110 can transport the welded batteries from the unloading and handling component 17. No manual operation is required. All of these are existing technologies. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here. The cabinet 111 is equipped with a control panel and operation buttons for operating the automatic welding device.

[0063] Specifically, the positioning fitting component 23 includes a conical column 231 that slides in the circular groove 22, a spring 232 fixed between one end of the conical column 231 and the inner wall of the circular groove 22, a rotating column 233 that rotates inside one end of the conical column 231, a rotating wheel 234 fixed at the upper end of the rotating column 233, and a rubber ring 235 fixedly sleeved on the surface of the rotating wheel 234.

[0064] Both the cone column 231 and the upper end of the rubber ring 235 are chamfered. Through the design, when the electrode ear is placed in the positioning groove on the placement frame 125, the cone column 231 is pressed and squeezed, causing the cone column 231 and the rubber ring 235 to move together towards the circular groove 22. At the same time, the spring 232 is compressed to generate elastic force. After the electrode ear is placed in the positioning groove, the cone column 231 acts on the rotating column 233 and the rotating wheel 234 under the action of the spring 232, making the rubber ring 235 elastically contact and abut against the electrode ear, preventing the electrode ear from detaching from the positioning groove on the placement frame 125 during rotation and welding operations. The rotating column 233 is rotatably connected to the inner wall of the cone column 231 through a bearing.

[0065] Specifically, a rotating rod 236 rotates inside the conical column 231. A sleeve 237 is fitted on the surface of the rotating rod 236, with one end of the sleeve 237 sliding on the conical column 231 and the other end of the sleeve 237 fixed to the inner wall of the circular groove 22. A drive groove 238 is opened on the inner wall of the sleeve 237. A ball bearing 239 is embedded in one end of the rotating rod 236 located in the inner cavity of the sleeve 237, and the ball bearing 239 slides in the drive groove 238. The drive groove 238 is divided into three parts. The first and third parts do not cause the rotating rod 236 to rotate when the ball bearing 239 moves in them. The second part allows the rotating rod 236 to rotate when the ball bearing 239 moves in it. The rotating rod 236 and the bevel gear ring 2311 are rotatably connected to the inner wall of the conical column 231 through bearings.

[0066] A bevel gear 2310 is fixed to the other end of the rotating rod 236. A bevel gear ring 2311 rotates inside the cone column 231, and the bevel gear ring 2311 meshes with the bevel gear 2310. A torsion spring 2312 is sleeved on the surface of the rotating column 233, and the two ends of the torsion spring 2312 are respectively fixed to the surface of the rotating column 233 and the inner wall of the bevel gear ring 2311. Through the setting of the torsion spring 2312, during the process of the small material handling rotating assembly 15 placing the electrode tab on the positioning groove of the placement frame 125, it can act on the cone column 231 and the rubber ring 235 to move it. The movement of the rod 236 and the ball 239 causes the electrode tab to move. During the process of the electrode tab being placed and lowered to contact the rubber ring 235, the relative rotation between the electrode tab and the rubber ring 235 will not occur under the action of friction, allowing the electrode tab to move longitudinally on the rubber ring 235. As the rubber ring 235 is squeezed, the ball 239 moves from the first part of the drive groove 238 through the second part to the third part, thereby causing the rod 236 to rotate and drive the bevel gear 2310 to rotate, thus causing the bevel gear ring 2311 to rotate.

[0067] When the rubber ring 235 is placed to limit the electrode tab, the rotating wheel 234 and the rotating column 233 can be limited. Then, under the rotation of the bevel gear ring 2311, the torsion spring 2312 deforms to generate torque. When the small material transport rotating assembly 15 is separated from the electrode tab, under the reset action of the torsion spring 2312, the rotating column 233 and the rotating wheel 234 can rotate, thereby causing the rubber ring 235 to rotate and drive the electrode tab to move. After it contacts the battery welding position, it stops moving under the blocking action. At the same time, the deformation of the torsion spring 2312 is reduced and the driving force is reduced, ensuring that the electrode tab is in close contact with the battery welding position and is positioned, thereby improving the accuracy and quality of subsequent welding.

[0068] During the subsequent battery welding and unloading process, the torsion spring 2312 returns to its original position, causing the rotating column 233, rotating wheel 234 and rubber ring 235 to continue rotating until they stop. When the rubber ring 235 is not obstructed, the cone column 231 is reset under the action of the spring 232. During this process, the rotation of the bevel ring 2311 can drive the torsion spring 2312 and the rotating column 233 to rotate together, thereby causing the rotating wheel 234 and rubber ring 235 to rotate until they stop.

[0069] Specifically, the cone 231 has a trigger groove 2313 that cooperates with the unlocking pusher 24. The trigger groove 2313 has an inclined surface. This design ensures that when the cone 231 is pressed and moved by the tab, the moving rod 244 will not obstruct its movement. The inclined surface facilitates the movement of the moving rod 244, which, when moving, drives the unlocking block 246, pressing the cone 231 to move, thereby causing the rubber ring 235 to detach from the tab surface. After welding, the battery and tabs are pushed out more smoothly. Under the reset action of the torsion spring 2312, the rotating column 233, the rotating wheel 234 and the rubber ring 235 rotate until the torsion spring 2312 completes its deformation reset. A slider 2314 is fixed on the surface of the cone column 231. A groove 2315 is opened on the inner wall of the circular groove 22, and the slider 2314 slides in the groove 2315. The groove 2315 and the slider 2314 can guide and limit the cone column 231 so that it will not rotate when moving.

[0070] Example 3, referring to Figures 8 to 23 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0071] Specifically, the unlocking pusher 24 includes a movable plate 241 that slides within the groove 21. The movable plate 241 is provided with a first guide groove 242 and a second guide groove 243. A movable rod 244 slides within the placement frame 125. One end of the movable rod 244 is fixed with a first guide post 245, which slides within the first guide groove 242. The other end of the movable rod 244 is fixed with an unlocking block 246, which cooperates with the trigger groove 2313. The movable rod 244 passes through the trigger groove 2313 and slides on the conical column 231. A push rod 247 slides within the placement frame 125. One end of the push rod 247 is fixed with a second guide post 248, which slides within the second guide groove 243. Push blocks 249 and 2410 are fixed at the two ends of the push rod 247 away from the second guide post 248, respectively.

[0072] Both guide groove 1 242 and guide groove 243 are divided into three parts. The first and third parts of guide groove 1 242 prevent the moving rod 244 from moving when the guide post 245 moves inside it. The second part allows the moving rod 244 to move when the guide post 245 moves inside it. The first and third parts of guide groove 243 prevent the push rod 247 from moving when the guide post 248 moves inside it. The second part allows the push rod 247 to move when the guide post 248 moves inside it.

[0073] The unlocking block 246 has a sloping surface on one side. When the guide post 245 moves from the first part of the guide groove 242 through the second part and into the third part, the guide post 245 moves, causing the moving rod 244 and the unlocking block 246 to move. This, in turn, squeezes the trigger groove 2313, causing the cone post 231 to move and the rubber ring 235 to move away from the electrode tab and be fixed in place. With the setting of push block 249 and push block 2410, when the guide post 248 moves from the first part of the guide groove 243 through the second part and into the third part, the push rod 247, push block 249 and push block 2410 can move. And when the push plate 127 just contacts and pushes the battery to move, it can simultaneously push the electrode tab to move, avoiding the situation where the bottom of the tilted placement rack 125 is blocked by force and the welding position is broken.

[0074] Specifically, a drive plate 2411 slides on the placement rack 125, and a guide hole 2412 is provided on the drive plate 2411. A guide post 2413 is fixed at one end of the moving plate 241, and the guide post 2413 slides in the guide hole 2412. A square hole 2414 is provided on the drive plate 2411 for it to move on the placement rack 125. A spring 2415 is fixed between the inner wall of the square hole 2414 and the surface of the placement rack 125. A limit block 2416 is fixed on one side of the drive plate 2411.

[0075] The guide hole 2412 is divided into five parts. The first, third and fifth parts are where the guide post 2413 moves without causing the moving plate 241 to move. The second and fourth parts are where the guide post 2413 moves within the guide hole 2412 and causes the moving plate 241 to move. When the welding is completed and the plate rotates to the unloading station, the cylinder 126 pushes the push plate 127 and the top plate 128 to move. The top plate 128 moves and contacts the drive plate 2411, pushing it to move. This causes the guide post 2413 to move from the first part of the guide hole 2412 through the second part into the third part, thereby causing the moving plate 241 to move and stop.

[0076] In this process, guide post 245 moves from the first part of guide groove 242 through the second part into the third part, thereby causing the moving rod 244 to move and stop the unlocking block 246, thus driving the cone post 231 to move and causing the rubber ring 235 to disengage from the electrode tab. Guide post 248 moves in the first part of guide groove 243 until it reaches the transition area with the second part. As the top plate 128 continues to push the drive plate 2411 to move, guide post 2413 moves from the third part of guide hole 2412 through the fourth part into the fifth part, thereby causing the moving plate 241 to move and stop. In this process, guide post 248 moves from the first part of guide groove 243 through the second part into the third part, thereby causing the push rod 247, push block 249 and push block 2410 to move. They move synchronously when they just contact the push plate 127 to push the battery to move. Guide post 245 moves in the third part of guide groove 242.

[0077] The second spring 2415 provides resistance when the drive plate 2411 moves. This resistance allows the locking block 1281 to move with the top plate 128 and engage with the fixing member 25, overcoming obstacles and locking onto the fixing member 25. At the same time, the second spring 2415 is compressed when the drive plate 2411 moves, providing force for subsequent reset. With the setting of the limiting block 2416, when the drive plate 2411 moves and then returns to reset, it will not move further when the fixing member 25 is pulled by the locking block 1281. This provides the conditions for the fixing member 25 to disengage as the locking block 1281 continues to move.

[0078] Specifically, a connecting rod 251 slides on the drive plate 2411, passing through and slidably connecting to it. A latch 252 slides on one end of the connecting rod 251, and the latch 252 cooperates with the locking block 1281. Both the latch 252 and the locking block 1281 have inclined surfaces. With this arrangement, when the locking block 1281 moves with the top plate 128, it contacts the latch 252, and the spring 257 prevents the block 256 and the connecting rod 251 from moving. Under the action, the locking block 1281 continues to move and can squeeze the buckle block 252 to move on one end of the connecting rod 251. At this time, the spring piece 253 deforms. As the locking block 1281 moves away from the buckle block 252, the buckle block 252 can be moved and reset under the action of the spring piece 253 deformation reset. The locking block 1281 is limited to the buckle block 252 and returned to the drive plate 2411, which makes it convenient to pull back the drive plate 2411 for reset when the top plate 128 and the locking block 1281 are reset and moved back.

[0079] A spring piece 253 is fixed between the inner wall of the buckle 252 and the surface of the connecting rod 251. An unlocking groove 254 is provided on the buckle 252. An unlocking plate 255 slides on the inner wall of the unlocking groove 254. One end of the unlocking plate 255 is fixed to the surface of the drive plate 2411. A block 256 is fixed to the other end of the connecting rod 251. A spring 257 is sleeved on the surface of the connecting rod 251 near the block 256. The two ends of the spring 257 are fixed to the surface of the block 256 and the surface of the drive plate 2411, respectively.

[0080] Both the unlocking groove 254 and the unlocking plate 255 are provided with inclined surfaces, which cooperate with each other. When the top plate 128 and the locking block 1281 are reset and the drive plate 2411 is reset, after the limiting block 2416 contacts the surface of the placement rack 125, the drive plate 2411 can no longer move. However, the locking block 1281 can still pull the buckle 252 to move. At this time, the connecting rod 251 and the square block 256 move together with it, and the spring 3 257 is compressed. As the buckle 252 moves, the inclined surface on the unlocking plate 255 contacts the inclined surface on the unlocking groove 254, causing the unlocking plate 255 to press the buckle 252 to move on the connecting rod 251, so that the buckle 252 unlocks the limiting of the locking block 1281 and releases the connection. Under the action of the spring 3 257, the square block 256 and the connecting rod 251 are reset.

[0081] Specifically, the anti-stick component 26 includes an air cavity 261 opened in the placement rack 125, a piston 262 sliding on the inner wall of the air cavity 261, and the piston 262 cooperating with the moving rod 244. A spring 263 is fixed between the surface of the piston 262 and the inner wall of the air cavity 261. An air bag 264 is fixed on the placement rack 125. A connecting tube 265 is connected to the surface of the air bag 264. The connecting tube 265 passes through the placement rack 125 and communicates with the air cavity 261. One end of the moving rod 244 extends into the inner cavity of the air cavity 261.

[0082] A seal is made between the piston 262 and the air chamber 261, and one end of the moving rod 244 is sealed to the inner wall of the placement frame 125 to prevent gas leakage. The connecting pipe 265 is a flexible hose, and the airbag 264 is made of elastic, high-temperature resistant, and smooth material, which are existing technologies. The working principle of this part is also existing technology, which can be clearly understood by those skilled in the art, and will not be described in detail here. By setting the airbag 264, the side of the battery welding position that is clamped and limited in the clamping member 123 can be limited, and the gap between the side of the welding position and the placement frame 125 can be filled, so that the welding slag will not connect the battery and the placement frame 125 under the action of solidification.

[0083] After the subsequent welding is completed, when the moving rod 244 drives the unlocking block 246 to act on the cone 231, the moving rod 244 moves and contacts the piston 262, which can push it to move. The gas in the airbag 264 is drawn into the air chamber 261 through the connecting pipe 265, so that the airbag 264 contracts and the battery is not fixed to the placement rack 125, making it easy to push the battery out of the placement rack 125. During this process, the spring 263 is compressed, providing force for the subsequent reset of the piston 262. A connecting hole is opened on one side of the placement rack 125 and communicates with the air chamber 261. The setting of the connecting hole allows the piston 262 to move smoothly when pushed by the moving rod 244.

[0084] During use, automated feeding and positioning are achieved as follows: the feeding assembly line 19 transports the battery to the cabinet 11, the feeding and handling assembly 13 feeds the battery into the clamping part 123 of the indexing plate, the vibrating plate 18 transports the electrode tab to the feeding assembly 14, the small material handling and rotating assembly 15 transports the electrode tab to the positioning slot of the placement rack 125, the electrode tab is squeezed by the cone 231, the spring 232 is compressed, and the rubber ring 235 elastically presses against the electrode tab to achieve initial positioning.

[0085] Precise fit between the tab and the battery: During the placement of the tab, the movement of the cone column 231 causes the ball bearing 239 on the rotating rod 236 to slide along the drive groove 238, driving the rotating rod 236 and the bevel gear 2310 to rotate, which in turn causes the bevel gear ring 2311 to rotate, and the torsion spring 2312 stores torque; after the small material handling rotating assembly 15 is removed from the tab, the torsion spring 2312 resets and drives the rubber ring 235 to rotate, pushing the tab down to fit tightly with the battery welding position, completing the secondary positioning.

[0086] Welding and anti-sticking protection: Turntable 122 drives the battery and electrode tabs to rotate to the welding assembly 16. During laser welding, airbag 264 fills the gap between the battery and the placement rack 125 to prevent weld slag from sticking. After welding is completed, turntable 122 rotates to the unloading station.

[0087] Postoperative unlocking and unloading: Cylinder 126 pushes push plate 127 and top plate 128 to move. Top plate 128 drives drive plate 2411 of unlocking pusher 24 to move. Guide post 3 2413 drives moving plate 241 along guide hole 2412. Guide post 1 245 and guide post 248 drive moving rod 244 and push rod 247 respectively. Unlocking block 246 squeezes cone post 231 to make rubber ring 235 disengage from electrode tab. Push block 1 249 and push block 2410 push electrode tab simultaneously. At the same time, moving rod 244 pushes piston 262, airbag 264 deflates, push plate 127 pushes battery out of placement rack 125, and unloading and handling assembly 17 moves battery to unloading line 110 to complete the process.

[0088] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automated welding device for battery production, characterized in that: include, The welding mechanism (1) includes a cabinet (11), on which an indexing plate assembly (12) is installed. The indexing plate assembly (12) includes a column (121) fixed to the cabinet (11). A turntable (122) rotates on the surface of the column (121). Clamping members (123) arranged in a circular pattern are fixed on the turntable (122). A support frame (124) is fixed on the clamping members (123). A placement frame (125) is fixed at the upper end of the support frame (124). A cylinder (126) is fixed at the upper end of the column (121). A push plate (127) is fixed at the output end of the cylinder (126). A top plate (128) is fixed on the push plate (127). A locking block (1281) is fixed on one end surface of the top plate (128). A driving member (129) for driving the turntable (122) to rotate is installed on the cabinet (11). The positioning and fitting mechanism (2) is installed on the placement frame (125) and includes a groove (21) and a circular groove (22) opened in the placement frame (125). The inner wall of the circular groove (22) is fitted with a positioning and fitting component (23). The placement frame (125) is fitted with an unlocking push component (24), and the unlocking push component (24) cooperates with the top plate (128) and the positioning and fitting component (23) respectively. The unlocking push component (24) is fitted with a fixing component (25), and the fixing component (25) cooperates with the locking block (1281). The placement frame (125) is fitted with an anti-stick component (26), and the anti-stick component (26) cooperates with the unlocking push component (24).

2. The automatic welding device for battery production as described in claim 1, characterized in that: The welding mechanism (1) also includes a loading and handling assembly (13), a misalignment assembly (14), a small material handling and rotating assembly (15), a welding assembly (16), and a unloading and handling assembly (17) fixed to the top of the cabinet (11). A vibratory feeder (18) is installed on one side of the cabinet (11).

3. The automatic welding device for battery production as described in claim 2, characterized in that: The top of the cabinet (11) is fixed with a loading line (19) and a unloading line (110). The loading line (19) is located on one side of the loading and handling assembly (13), and the unloading line (110) is located on one side of the unloading and handling assembly (17). The top of the cabinet (11) is fixed with a box (111) with a door.

4. The automatic welding apparatus for battery production as described in claim 1, characterized in that: The positioning fitting component (23) includes a conical column (231) that slides in a circular groove (22). A spring (232) is fixed between one end of the conical column (231) and the inner wall of the circular groove (22). A rotating column (233) rotates inside one end of the conical column (231). A rotating wheel (234) is fixed at the upper end of the rotating column (233). A rubber ring (235) is fixedly sleeved on the surface of the rotating wheel (234).

5. The automatic welding apparatus for battery production as described in claim 4, characterized in that: A rotating rod (236) rotates inside the conical column (231). A sleeve (237) is fitted on the surface of the rotating rod (236), and one end of the sleeve (237) slides on the conical column (231). The other end of the sleeve (237) is fixed to the inner wall of the circular groove (22). A driving groove (238) is opened on the inner wall of the sleeve (237). A ball bearing (239) is embedded at one end of the rotating rod (236) located in the inner cavity of the sleeve (237). 239) Sliding in the drive groove (238), the other end of the rotating rod (236) is fixed with a bevel gear (2310), a bevel gear ring (2311) rotates in the cone column (231), and the bevel gear ring (2311) meshes with the bevel gear (2310). A torsion spring (2312) is sleeved on the surface of the rotating column (233), and the two ends of the torsion spring (2312) are respectively fixed to the surface of the rotating column (233) and the inner wall of the bevel gear ring (2311).

6. The automatic welding apparatus for battery production as described in claim 5, characterized in that: The cone (231) has a trigger groove (2313) that cooperates with the unlocking pusher (24). A slider (2314) is fixed on the surface of the cone (231). A sliding groove (2315) is provided on the inner wall of the circular groove (22), and the slider (2314) slides in the sliding groove (2315).

7. The automatic welding apparatus for battery production as described in claim 6, characterized in that: The unlocking pusher (24) includes a movable plate (241) that slides within the groove (21). The movable plate (241) has a guide groove 1 (242) and a guide groove 2 (243) respectively. A movable rod (244) slides within the placement rack (125). One end of the movable rod (244) is fixed with a guide post 1 (245), which slides within the guide groove 1 (242). The other end of the movable rod (244) has an unlocking block (246) fixed to its surface. Block (246) cooperates with trigger groove (2313), the moving rod (244) passes through trigger groove (2313) and slides on cone column (231), push rod (247) slides in the placement frame (125), one end of push rod (247) is fixed with guide post two (248), and guide post two (248) slides in guide groove two (243), and push block one (249) and push block two (2410) are fixed at the two ends of push rod (247) away from guide post two (248) respectively.

8. The automatic welding apparatus for battery production as described in claim 7, characterized in that: A drive plate (2411) slides on the placement rack (125). A guide hole (2412) is provided on the drive plate (2411). A guide post (2413) is fixed at one end of the moving plate (241), and the guide post (2413) slides in the guide hole (2412). A square hole (2414) is provided on the drive plate (2411) for it to move on the placement rack (125). A spring (2415) is fixed between the inner wall of the square hole (2414) and the surface of the placement rack (125). A limit block (2416) is fixed on one side of the drive plate (2411).

9. The automatic welding apparatus for battery production as described in claim 8, characterized in that: A connecting rod (251) slides on the drive plate (2411). A buckle (252) slides on one end of the connecting rod (251), and the buckle (252) cooperates with the locking block (1281). A spring piece (253) is fixed between the inner wall of the buckle (252) and the surface of the connecting rod (251). An unlocking groove (254) is provided on the buckle (252). An unlocking plate (255) slides on the inner wall of the unlocking groove (254), and one end of the unlocking plate (255) is fixed to the surface of the drive plate (2411). A block (256) is fixed to the other end of the connecting rod (251). A spring three (257) is sleeved on the surface of the connecting rod (251) near the block (256), and the two ends of the spring three (257) are respectively fixed to the surface of the block (256) and the surface of the drive plate (2411).

10. The automatic welding apparatus for battery production as described in claim 8, characterized in that: The anti-stick component (26) includes an air chamber (261) opened in the placement rack (125). A piston (262) slides on the inner wall of the air chamber (261), and the piston (262) cooperates with the moving rod (244). A spring (263) is fixed between the surface of the piston (262) and the inner wall of the air chamber (261). An air bag (264) is fixed on the placement rack (125). A connecting tube (265) is connected to the surface of the air bag (264). The connecting tube (265) passes through the placement rack (125) and communicates with the air chamber (261). One end of the moving rod (244) extends into the inner cavity of the air chamber (261).

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