Octagonal single positive and negative electrode top cover and welding equipment thereof

Abstract

The application discloses an eight-edge single-pass positive and negative electrode top cover and welding equipment thereof, relates to the field of batteries and welding equipment thereof, and solves the problem of low production efficiency of the existing single-pass positive and negative electrode top cover and welding equipment thereof and easy terminal tilting, collision and abrasion in the product welding conveying and unloading process, and comprises a shell, a conveying mechanism, a welding mechanism and a dust removal mechanism, the conveying mechanism comprises a fixing column, a rotating disc, a fixing ring and a turnover plate, the shell is fixed through the turnover plate and the fixing ring, the shell is conveyed through the rotating disc, the turnover plate at the bottom is gradually controlled to be unfolded after welding is completed, the shell after welding is output from below, the side of the terminal is ensured to be output towards the upper side, the shell and the negative electrode top cover sheet are welded and polished through the welding mechanism, and the turnover plate is drawn out from the bottom through the dust removal mechanism in the process of unfolding of the turnover plate.

Description

Technical Field

[0001] This invention relates to the field of battery and welding equipment technology, specifically to an octagonal single-pass positive and negative electrode top cover and its welding equipment. Background Technology

[0002] Currently, the most commonly used battery type in the power battery industry is the square aluminum-cased cell. The main components of a square aluminum-cased cell are the aluminum cell casing and the top cover assembly. The primary function of the aluminum cell casing is to provide a sealed space to house the electrode components and electrolyte. The internal electrode components achieve electrochemical reactions by connecting to the positive and negative terminals of the top cover assembly. Existing top cover casings are primarily circular or square, and are generally either dual-channel or single-channel. Dual-channel casings have terminals and posts on both the positive and negative electrodes, requiring welding at both ends of the casing; single-channel casings only require welding at one end.

[0003] The existing dual-channel battery has terminal posts on both the positive and negative top covers. During the connection process, it is necessary to first weld the terminal top cover of one end, then flip the battery casing, and then weld the terminal top cover of the other end. The operation is quite cumbersome. In addition, the unloading operation of the welded battery is also cumbersome during the automated welding and conveying process. If it is directly tilted, it is difficult to ensure that the terminal side is facing upward for stable unloading, which may lead to impact and wear of the terminals and affect product quality. Summary of the Invention

[0004] The purpose of this invention is to provide an octagonal single-pass positive and negative electrode top cover and its welding equipment that facilitates improved battery production efficiency and avoids terminal impact and wear during welding and transportation, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an octagonal single-channel positive and negative electrode top cover, comprising a shell, the cross-section of which is a regular octagon; a positive electrode top cover fixedly connected to the bottom of the shell; a negative electrode top cover fixedly connected to the upper end of the shell; a negative electrode lower plastic and an explosion-proof sheet fixedly connected to the bottom of the negative electrode top cover; a protective small piece, a positive electrode post, and a negative electrode post fixedly connected to the negative electrode top cover; a leak-stopping sealing ring fixedly connected to the bottom of each of the positive and negative electrode posts; a positive electrode upper plastic fixedly connected to the positive electrode post; a positive terminal fixedly connected to the upper side of the positive electrode upper plastic; and a negative electrode upper plastic fixedly connected to the negative electrode post; the negative terminal fixedly connected to the upper side of the negative electrode upper plastic. This design facilitates improved battery production efficiency and ease of use.

[0006] Another technical solution provided by this invention is:

[0007] A welding device for welding the aforementioned octagonal single-channel positive and negative electrode top cover includes a body, a conveying mechanism, a welding mechanism, and a dust removal mechanism. The conveying mechanism includes a fixed column fixedly mounted on the body. A rotating disk is rotatably connected to the upper side of the fixed column. Multiple sets of fixed rings are uniformly fixedly connected to the rotating disk. Two sets of flipping plates are respectively provided below each set of fixed rings. The flipping plates and the fixed rings are used to fix the shell and convey the shell through the rotating disk. After welding, the bottom flipping plate is gradually unfolded to output the welded shell from below, ensuring that the terminal side faces upwards during output. The welding mechanism is mounted on the fixed column and is used to perform welding and grinding operations on the shell and the negative electrode top cover. The dust removal mechanism is mounted on the body and is used to extract debris and dust from the bottom of the flipping plate during the unfolding process, so that the output shell is relatively clean after the flipping plate is fully unfolded, which helps to avoid terminal impact and wear during welding and conveying.

[0008] Preferably, the conveying mechanism further includes a rotating block fixedly installed on the upper side of the flip plate. The rotating block is rotatably connected to the bottom surface of the fixed ring via a spring-loaded shaft. A base plate is fixedly connected to the bottom of the flip plate. The inner wall cross-section of the columnar frame structure formed by two sets of adjacent flip plates is a regular octagon. The fixed column is provided with an opening and closing component for controlling the opening and closing state of the flip plate according to the position of the fixed ring. The flip plate is provided with a fixing component for stably clamping the octagonal shells of different sizes, which facilitates fixing the shells through the flip plate and the fixed ring, and conveying the shells through the rotating disk. After welding is completed, the bottom flip plate is gradually controlled to unfold, and the welded shells are output from below, ensuring that the terminal side faces upwards during output.

[0009] Preferably, the opening and closing component includes a sleeve tube that is slidably connected to the outer wall of the fixing ring in a vertical direction. The sleeve tube is slidably fitted to the outer wall of the flip plate. The outer wall of the fixing column is provided with a guide groove. A guide rod that is slidably fitted to the inner wall of the guide groove is fixedly connected to the side of the sleeve tube. The inner side of the bottom end of the sleeve tube is designed with an arc-shaped chamfer to facilitate control of the opening and closing state of the flip plate according to the position of the fixing ring.

[0010] Preferably, the fixing component includes three sets of elastic plates installed on the inner wall of the flip plate. The inner wall of the flip plate is provided with three sets of sliding grooves. Sliding plates are fixedly connected in the sliding grooves. The two ends of the elastic plates are respectively fixedly connected to two sets of sliding plates on the same straight line. A first spring fixedly connected to the sliding groove is fixedly connected to the side of the sliding plate, which facilitates stable clamping of octagonal shells of different sizes.

[0011] Preferably, the welding mechanism includes an electric telescopic rod fixedly installed in the fixed column, a lifting frame fixedly connected to the telescopic end of the electric telescopic rod, a sleeve fixedly connected to the bottom of the lifting frame, a drive disk rotatably connected inside the sleeve, and a welding head and a grinding head provided at the bottom of the drive disk to facilitate welding and grinding operations on the housing and the negative electrode top cover.

[0012] Preferably, the dust removal mechanism includes a collection box fixedly installed on the machine body. An external gear ring is rotatably connected to the upper side of the collection box. The bottom of the external gear ring is connected to the collection box. The upper side of the external gear ring is opposite to the bottom of the flip plate during the opening and closing process. A drive motor is fixedly connected to the machine body. A drive gear that meshes with the external gear ring is coaxially fixedly connected to the output end of the drive motor. Multiple sets of drive blades are fixedly connected to the inner wall of the external gear ring to facilitate the extraction of debris and dust from the bottom of the flip plate during the unfolding process, so that the output shell is relatively clean after the flip plate is fully unfolded.

[0013] Preferably, the conveying mechanism further includes a rotating cylinder rotatably connected to the fixed column. The outer wall of the top end of the rotating cylinder is fixedly connected to the rotating disk, and a worm gear is fixedly connected to the outer wall of the bottom end of the rotating cylinder. A worm gear meshing with the worm gear is rotatably connected to the machine body. A bevel gear is coaxially fixedly connected to one end of the worm gear, and a bevel gear ring meshing with the bevel gear is coaxially fixedly connected to the upper end of the external gear ring. This facilitates the intermittent and slow rotation of the rotating disk during the rotation of the drive motor.

[0014] Preferably, a second spring is fixedly connected to the base plate, and a buffer plate that is slidably connected to the inner wall of the flip plate is fixedly connected to the upper side of the second spring, so as to provide buffer support for the bottom of the shell.

[0015] Preferably, an exhaust filter screen is fixedly connected to the side of the collection box to facilitate the filtration and discharge of gas inside the collection box.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention provides an octagonal single-channel positive and negative electrode top cover and its welding equipment, which solves the problems of low production efficiency and easy tilting, impact and wear of terminals during the welding, conveying and unloading process of existing single-channel positive and negative electrode top covers and their welding equipment. The shell is fixed by a flip plate and a fixing ring, and the shell is conveyed by a rotating disk. After welding, the bottom flip plate is gradually unfolded, and the welded shell is output from the bottom, ensuring that the terminal side faces upwards. The welding mechanism performs welding and grinding operations on the shell and the negative electrode top cover. During the unfolding of the flip plate, the dust removal mechanism extracts the debris and dust from the bottom of the flip plate, so that the output shell is relatively clean after the flip plate is fully unfolded. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the single-pass positive and negative electrode top cover structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall structure of the welding equipment of the present invention;

[0020] Figure 3 This is a partial structural diagram of the welding mechanism of the present invention;

[0021] Figure 4 for Figure 3 Enlarged view of region A in the middle;

[0022] Figure 5 This is a partial structural diagram of the dust removal mechanism of the present invention;

[0023] Figure 6 for Figure 5 Enlarged view of region B in the middle;

[0024] Figure 7 This is a partial structural diagram of the conveying mechanism of the present invention;

[0025] Figure 8 This is a partial structural diagram of the opening and closing component of the present invention;

[0026] Figure 9 This is a partial structural cross-sectional view of the conveying mechanism of the present invention;

[0027] Figure 10 for Figure 9 Enlarged view of region C;

[0028] Figure 11 This is a partial structural diagram of the fastener of the present invention.

[0029] In the diagram: 1-Shell; 2-Positive electrode top cover; 3-Negative electrode lower plastic; 4-Negative electrode top cover plate; 5-Positive electrode terminal; 6-Positive electrode upper plastic; 7-Positive electrode post; 8-Leak-sealing ring; 9-Negative electrode terminal; 10-Negative electrode upper plastic; 11-Negative electrode post; 12-Protective small piece; 13-Explosion-proof piece; 14-Machine body; 15-Conveying mechanism; 16-Fixing column; 17-Rotating disk; 18-Fixing ring; 19-Tilting plate; 20-Welding mechanism; 21-Dust removal mechanism; 22-Rotating block; 23-Base plate; 24-Opening and closing part; 25-Fixing part; 2 6- Connecting pipe; 27- Guide groove; 28- Guide rod; 29- Elastic plate; 30- Sliding groove; 31- Sliding plate; 32- First spring; 33- Electric telescopic rod; 34- Lifting frame; 35- Connecting sleeve; 36- Drive disc; 37- Welding head; 38- Grinding head; 39- Collection box; 40- External gear ring; 41- Drive motor; 42- Drive gear; 43- Drive blade; 44- Rotating cylinder; 45- Worm gear; 46- Worm; 47- Bevel gear; 48- Bevel gear ring; 49- Second spring; 50- Buffer plate; 51- Exhaust filter. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figure 1 This invention provides a technical solution: an octagonal single-channel positive and negative electrode top cover, including a shell 1, the cross-section of the shell 1 being a regular octagon, a positive electrode top cover 2 fixedly connected to the bottom of the shell 1, a negative electrode top cover 4 fixedly connected to the upper end of the shell 1, a negative electrode lower plastic 3 and an explosion-proof sheet 13 fixedly connected to the bottom of the negative electrode top cover 4, a protective small piece 12, a positive electrode post 7 and a negative electrode post 11 fixedly connected to the negative electrode top cover 4, a leak-stopping sealing ring 8 fixedly connected to the bottom of both the positive electrode post 7 and the negative electrode post 11, a positive electrode upper plastic 6 fixedly connected to the positive electrode post 7, a positive terminal 5 fixedly connected to the upper side of the positive electrode upper plastic 6, a negative electrode upper plastic 10 fixedly connected to the negative electrode post 11, and a negative terminal 9 fixedly connected to the upper side of the negative electrode upper plastic 10.

[0032] Compared to the original dual-channel positive and negative electrode top cover, this structure has a simpler design process. The negative electrode top cover 4 can be manufactured through double riveting, and the positive electrode top cover 2 can be integrated with the housing 1 only during the stamping stage. In addition, considering the automated conveying and processing in the subsequent processing, this octagonal housing 1 and top cover are easier to identify and position, and are easier for the robot to grasp. At the same time, the octagonal housing 1 structure has stronger pressure resistance and is more stable than the traditional cylindrical structure. Only one side of the negative electrode top cover 4 needs to be welded, making the operation more convenient and efficient. For the same diameter circular housing, the octagonal housing has a larger internal space than the circular housing. Pack principle: In a pack consisting of the same number of cells, the connection gap between cells is reduced, and the space utilization rate is improved.

[0033] Please see Figures 2-11 Another aspect of the present invention provides a welding device for welding the aforementioned octagonal single-channel positive and negative electrode top cover, including a body 14, a conveying mechanism 15, a welding mechanism 20, and a dust removal mechanism 21. The conveying mechanism 15 includes a fixed column 16 fixedly mounted on the body 14, a rotating disk 17 rotatably connected to the upper side of the fixed column 16, and multiple sets of fixed rings 18 uniformly fixedly connected to the rotating disk 17. Below each set of fixed rings 18 are two sets of flipping plates 19, used to fix the housing 1 by means of the flipping plates 19 and the fixed rings 18. The housing 1 is conveyed by the rotating disk 17, and the bottom flip plate 19 is gradually unfolded after welding is completed, so that the welded housing 1 is output from below, ensuring that the terminal side faces upwards. The welding mechanism 20 is installed on the fixed column 16 and is used to weld and grind the housing 1 and the negative electrode top cover plate 4. The dust removal mechanism 21 is installed on the machine body 14 and is used to extract the debris and dust in the flip plate 19 from the bottom during the unfolding process of the flip plate 19, so that the output housing 1 is relatively clean after the flip plate 19 is fully unfolded.

[0034] The conveying mechanism 15 also includes a rotating block 22 fixedly installed on the upper side of the flip plate 19. The rotating block 22 is rotatably connected to the bottom surface of the fixed ring 18 through a spring shaft. The bottom of the flip plate 19 is fixedly connected to a base plate 23. The inner wall cross section of the columnar frame structure formed by two sets of adjacent flip plates 19 is a regular octagon. A second spring 49 is fixedly connected to the base plate 23. A buffer plate 50 that is slidably connected to the inner wall of the flip plate 19 is fixedly connected to the upper side of the second spring 49. An opening and closing member 24 is provided on the fixed column 16 for controlling the opening and closing state of the flip plate 19 according to the position of the fixed ring 18. A fixing member 25 is provided inside the flip plate 19 for stably clamping octagonal shells 1 of different sizes.

[0035] The opening and closing component 24 includes a sleeve 26 that is slidably connected to the outer wall of the fixing ring 18 in the vertical direction. The sleeve 26 is slidably attached to the outer wall of the flip plate 19. The outer wall of the fixing column 16 is provided with a guide groove 27. The side of the sleeve 26 is fixedly connected with a guide rod 28 that is slidably attached to the inner wall of the guide groove 27. The inner side of the bottom end of the sleeve 26 is designed with a rounded chamfer.

[0036] The fastener 25 includes three sets of elastic plates 29 installed on the inner wall of the flip plate 19. The inner wall of the flip plate 19 is provided with three sets of sliding grooves 30. Sliding plates 31 are fixedly connected in the sliding grooves 30. The two ends of the elastic plates 29 are respectively fixedly connected to two sets of sliding plates 31 on the same straight line. The side of the sliding plate 31 is fixedly connected to a first spring 32 that is fixedly connected to the sliding groove 30.

[0037] The welding mechanism 20 includes an electric telescopic rod 33 fixedly installed in the fixed column 16. The telescopic end of the electric telescopic rod 33 is fixedly connected to a lifting frame 34. The bottom of the lifting frame 34 is fixedly connected to a sleeve 35. A drive disk 36 is rotatably connected inside the sleeve 35. The bottom of the drive disk 36 is provided with a welding head 37 and a grinding head 38.

[0038] The dust removal mechanism 21 includes a collection box 39 fixedly installed on the body 14. An exhaust filter 51 is fixedly connected to the side of the collection box 39. An external gear ring 40 is rotatably connected to the upper side of the collection box 39. The bottom of the external gear ring 40 is connected to the collection box 39. The upper side of the external gear ring 40 is opposite to the bottom of the flip plate 19 during the opening and closing process. A drive motor 41 is fixedly connected to the body 14. The drive motor 41 is preferably a YYHS-40. The output end of the drive motor 41 is coaxially fixedly connected to a drive gear 42 that meshes with the external gear ring 40. Multiple sets of drive blades 43 are fixedly connected to the inner wall of the external gear ring 40.

[0039] The conveying mechanism 15 also includes a rotating cylinder 44 rotatably connected to the fixed column 16. The top outer wall of the rotating cylinder 44 is fixedly connected to the rotating disk 17. A worm gear 45 is fixedly connected to the bottom outer wall of the rotating cylinder 44. A worm 46 meshing with the worm gear 45 is rotatably connected to the machine body 14. A bevel gear 47 is coaxially fixedly connected to one end of the worm 46. A bevel gear ring 48 meshing with the bevel gear 47 is coaxially fixedly connected to the upper end of the external tooth ring 40.

[0040] In this embodiment, the shell 1 to be welded is placed between the closed flip plates 19. At this time, the inner cavity of the flip plate 19 is octagonal, which can fit the octagonal shell 1 for positioning. At the same time, the inner wall of the flip plate 19 is provided with three sets of elastic plates 29. Only the two sides parallel to the opening and closing direction are not provided with elastic plates 29, so as to avoid the elastic plates 29 on both sides continuously clamping the shell 1 during the opening and closing process, affecting the downward output of the shell 1. The remaining surfaces are provided with elastic plates 29, so that after the two flip plates 19 are closed, the elastic plates 29 on the six opposite surfaces can simultaneously clamp the six sides of the shell 1 symmetrically, improving the stability of the fixation.

[0041] It is worth noting that the middle part of the elastic plate 29 is convex, which can fit against the outer wall of the housing 1. When it is squeezed by the outer wall of the housing 1, it pushes the sliding plates 31 on both sides to slide and compress the first spring 32. At the same time, there is also a buffer plate 50 and a second spring 49 at the bottom of the housing 1, which makes the positioning of the housing 1 inside the fixing ring 18 more stable. When assembling, welding and grinding the terminal parts, it can always provide buffer support for the bottom of the housing 1, and increase the contact force between the welding head 37 and the grinding head 38.

[0042] The drive motor 41 is started, which drives the drive gear 42 to rotate, thereby causing the external gear ring 40 and the drive blade 43 to rotate. The external gear ring 40 drives the bevel gear ring 48 to rotate, which in turn causes the bevel gear 47 to drive the worm gear 46 to rotate. The worm gear 46 drives the worm wheel 45 to rotate the rotating cylinder 44. The rotating cylinder 44 drives the rotating disk 17 to drive the fixed tube to rotate, which in turn drives the housing 1 inside the flip plate 19 to rotate and transport. During the rotation of the sleeve 26, the guide rod 28 will slide in the guide groove 27. The guide groove 27 is lower on the side near the welding head 37 and is horizontal in one section. The side away from the welding head 37 is the highest. The guide groove is gradually inclined on both sides, so that during the rotation of the guide rod 28, the sleeve 26 will gradually move up to the highest point and then gradually move down to the lowest point, and then rotate half a circle at the lowest point.

[0043] As the sleeve 26 moves upward, it gradually releases its contact with the side wall of the flip plate 19. Driven by the spring shaft, the flip plate 19 flips to both sides. Due to the rounded chamfer design of the bottom inner wall of the sleeve 26, the flip plate 19 flips relatively slowly during the flipping process. After the sleeve 26 moves completely to the upper side of the flip plate 19, the flip plate 19 opens to the maximum opening angle. At this time, the inner housing 1 can output vertically downward, ensuring that the negative electrode top cover 4 and the terminal side face upward after welding, thus avoiding impact and wear on the terminal.

[0044] During the process of rotating and conveying the housing 1 by the rotating disk 17, the terminal structure needs to be assembled before reaching the position of the welding head 37. After reaching the bottom of the welding head 37, the electric telescopic rod 33 controls the lifting frame 34 to move down, and the sleeve 35 fits the top of the housing 1. The driving disk 36 drives the welding head 37 and the grinding head 38 to rotate. The welding head 37 welds and fixes the upper side of the housing 1 to the negative electrode top cover plate 4, while the grinding head 38 can simultaneously extend and retract to grind the edge welding position, improving the operation efficiency. The dust generated by grinding will fall directly into the two sets of flip plates 19 at the bottom for collection, reducing the spread of dust.

[0045] During the rotation of the outer toothed ring 40, the drive blade 43 will rotate and generate downward suction. The upper side of the drive blade 43 is directly opposite the bottom of the flip plate 19 during the opening and closing process. At this time, the housing 1 will not slide out from the bottom. The dust inside the flip plate 19 will be tilted down by the tilt plate 19 and the buffer plate 50. With the suction of the drive blade 43, it will be transported to the collection box 39. After being filtered by the exhaust filter 51, the dust will be collected in the collection box 39 for storage. The collection box 39 can be cleaned as needed.

[0046] It is worth noting that the rotation of the drive gear 42 driven by the drive motor 41 is intermittent, so that the housing 1 switches the set angle with the fixed ring 18 each time. Then, the welding head 37 can stably weld the housing 1. Due to the setting of the worm 46 and worm wheel 45, the rotation of the rotating disk 17 is slower, which also ensures the rotation speed of the drive blade 43 during the rotation process and improves the suction force. The worm wheel 45 needs to rotate many times to complete the required angle switch of the rotating disk 17. This switching process is exactly when the flip plate 19 opens to output dust into the collection box 39. The structure is simple and ingenious, effectively improving the welding and conveying efficiency between the housing 1 and the top cover.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding device for an octagonal single-channel positive and negative electrode top cover, characterized in that, The octagonal single-pass positive and negative electrode top cover includes: a shell, the cross-section of which is a regular octagon, and a negative electrode top cover plate fixedly connected to the upper end of the shell; Welding equipment includes the machine body; Also includes: The conveying mechanism includes a fixed column fixedly installed on the machine body. A rotating disk is rotatably connected to the upper side of the fixed column. Multiple sets of fixed rings are evenly fixedly connected to the rotating disk. Two sets of flipping plates are respectively provided below the multiple sets of fixed rings. The flipping plates and fixed rings are used to fix the shell and convey the shell through the rotating disk. After welding is completed, the bottom flipping plates are gradually controlled to unfold, and the welded shell is output from the bottom, ensuring that the terminal side faces upward when output. A welding mechanism, mounted on a fixed column, is used for welding and grinding the shell and the negative electrode top cover. The conveying mechanism also includes a rotating block fixedly mounted on the upper side of the tilting plate. The rotating block is rotatably connected to the bottom surface of the fixed ring via a spring-loaded shaft. A base plate is fixedly connected to the bottom of the tilting plate. The inner wall of the cylindrical frame structure formed by two adjacent tilting plates has a regular octagonal cross-section. The fixed column is equipped with an opening and closing mechanism for controlling the opening and closing state of the tilting plate according to the position of the fixed ring. The tilting plate contains a fixing mechanism for stably clamping octagonal shells of different sizes. The opening and closing mechanism includes... The outer wall of the fixing ring is slidably connected to the sleeve in the vertical direction. The sleeve slides and fits against the outer wall of the flip plate. The outer wall of the fixing column is provided with a guide groove. The side of the sleeve is fixedly connected with a guide rod that slides and fits against the inner wall of the guide groove. The inner side of the bottom end of the sleeve is designed with an arc-shaped chamfer. The fixing component includes three sets of elastic plates installed on the inner wall of the flip plate. The inner wall of the flip plate is provided with three sets of sliding grooves. Sliding plates are fixedly connected in the sliding grooves. The two ends of the elastic plates are fixedly connected to two sets of sliding plates on the same straight line. The side of the sliding plate is fixedly connected with a first spring that is fixedly connected to the sliding groove.

2. The welding equipment for an octagonal single-channel positive and negative electrode top cover according to claim 1, characterized in that: The welding mechanism includes an electric telescopic rod fixedly installed in a fixed column. The telescopic end of the electric telescopic rod is fixedly connected to a lifting frame. The bottom of the lifting frame is fixedly connected to a sleeve. A drive disc is rotatably connected inside the sleeve. The bottom of the drive disc is equipped with a welding head and a grinding head.

3. The welding equipment for an octagonal single-channel positive and negative electrode top cover according to claim 1, characterized in that: The welding equipment also includes a dust removal mechanism installed on the machine body. The dust removal mechanism includes a collection box fixedly installed on the machine body. An external gear ring is rotatably connected to the upper side of the collection box. The bottom of the external gear ring is connected to the collection box. The upper side of the external gear ring is opposite to the bottom of the flip plate during the opening and closing process. A drive motor is fixedly connected to the machine body. A drive gear that meshes with the external gear ring is coaxially fixedly connected to the output end of the drive motor. Multiple sets of drive blades are fixedly connected to the inner wall of the external gear ring.

4. The welding equipment for an octagonal single-channel positive and negative electrode top cover according to claim 3, characterized in that: The conveying mechanism also includes a rotating cylinder rotatably connected to a fixed column. The top outer wall of the rotating cylinder is fixedly connected to a rotating disk, and a worm gear is fixedly connected to the bottom outer wall of the rotating cylinder. A worm gear meshing with the worm gear is rotatably connected to the machine body. A bevel gear is coaxially fixedly connected to one end of the worm gear, and a bevel gear ring meshing with the bevel gear is coaxially fixedly connected to the upper end of the external gear ring.

5. The welding equipment for an octagonal single-channel positive and negative electrode top cover according to claim 1, characterized in that, The octagonal single-channel positive and negative electrode top cover also includes: a positive electrode top cover fixedly installed at the bottom of the housing; a negative electrode lower plastic and an explosion-proof sheet fixedly connected to the bottom of the negative electrode top cover; a protective small piece, a positive electrode post, and a negative electrode post fixedly connected to the negative electrode top cover; a leak-stopping sealing ring fixedly connected to the bottom of both the positive and negative electrode posts; a positive electrode upper plastic fixedly connected to the positive electrode post; a positive terminal fixedly connected to the upper side of the positive electrode upper plastic; a negative electrode upper plastic fixedly connected to the negative electrode post; and a negative terminal fixedly connected to the upper side of the negative electrode upper plastic.

6. The welding equipment for an octagonal single-pass positive and negative electrode top cover according to claim 1, characterized in that: A second spring is fixedly connected to the base plate, and a buffer plate that slides on the inner wall of the flip plate is fixedly connected to the upper side of the second spring.

7. The welding equipment for an octagonal single-channel positive and negative electrode top cover according to claim 3, characterized in that: An exhaust filter screen is fixedly connected to the side of the collection box.

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