A special-shaped interval string welding machine

Abstract

The utility model relates to a series welding machine technical field especially for a special-shaped interval series welding machine, including main frame, the front end of main frame is fixed with the vice frame, be provided with the discharge mechanism on the vice frame and be used for the discharge after battery piece processing, and the discharge mechanism includes: turnover subassembly, set up on the vice frame and be used for battery piece turnover, take and put subassembly, set up on the vice frame and be used for battery piece taking and putting, snatch subassembly, including setting on the turnover subassembly and taking and putting subassembly's base plate, a plurality of carriages are installed with the horizontal sliding of base plate, the lower end fixed mounting plate of carriage, mounting plate both ends all are installed with sucking disc, the surface rotation of carriage is installed with the guide pulley, the longitudinal sliding of base plate is installed with the guide plate, through the interval of all adsorption points'synchronous regulation, make sucking disc snatch can adapt to the complex layout of different specifications battery string, ensure every piece of battery alignment accurate, stress uniform in the turnover and removal process, thereby effectively avoid the collision and the hidden crack, greatly promote production flexibility and product yield.

Description

Technical Field

[0001] This utility model relates to the field of string welding machine technology, specifically a string welding machine with irregular spacing. Background Technology

[0002] With the continuous development of photovoltaic technology, various new battery technology routes aimed at improving module efficiency and power, such as shingled modules and busbar-less modules that use special overlapping cell arrangements, are constantly emerging and being promoted and applied. According to CN118492723B, a stringing machine for semiconductor cell processing is disclosed. This technology discloses a technical solution including "a stringing machine body and a welding platform; a welding head; a collection box located outside the welding head, with multiple connecting holes at the bottom of the collection box located outside the welding head; and a collection mechanism connected to the collection box. This stringing machine for semiconductor cell processing can extract air from the collection box through the collection mechanism, creating a negative pressure inside the collection box. This allows the air around the welding head to be drawn in through the connecting holes outside the welding head. At the same time, the collection mechanism also blows air onto the surface of the welding head each time the stringing machine body moves the welding head to its reset position, in order to clean the newly adhering oxides on the surface of the welding head. By blowing air to clean the surface of the welding head after each welding operation, the workload of the workers is reduced and the welding efficiency of the stringing machine body is improved." In the existing battery string grasping and handling process, since the spacing of the suction cups on the grasping mechanism is fixed, when it faces battery strings made of welded battery cells of different specifications or with special irregular arrangement design, its fixed suction cup layout cannot accurately match the actual position of each battery cell in the battery string. As a result, during the grasping, flipping and transfer process, some suction cups may not be accurately aligned or the applied force may be uneven, which can easily cause squeezing and scratching between battery cells, or local stress concentration inside the battery cells, ultimately leading to microcracks or damage to the battery cells. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a non-standard spacing string welding machine. By synchronously adjusting the spacing of all adsorption points, the suction cup can adapt to the complex layout of battery strings of different specifications. During the flipping and transfer process, it ensures that each battery is accurately aligned and subjected to uniform force, thereby effectively avoiding collisions and microcracks, and significantly improving production flexibility and product yield.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an irregularly spaced string welding machine, comprising a main frame, a sub-frame fixed to the front end of the main frame, and a discharge mechanism on the sub-frame for discharging the processed battery cells. The discharge mechanism includes: A flipping assembly, mounted on a sub-frame, is used for flipping the solar cells. A pick-and-place assembly is mounted on the sub-frame and used for picking up and placing battery cells. The gripping component includes a base plate mounted on the flipping component and the pick-and-place component. Several carriages are slidably mounted on the base plate. A mounting plate is fixed to the lower end of the carriage. Suction cups are mounted on both ends of the mounting plate. Guide wheels are rotatably mounted on the surface of the carriage. A guide plate is slidably mounted on the base plate. Several symmetrically arranged inclined grooves are opened on both the left and right sides inside the guide plate. The guide wheels are located inside the inclined grooves. A power component is provided on the base plate to drive the guide plate to move.

[0005] Preferably, the flipping assembly further includes bearing seats fixed at the left and right ends inside the sub-frame, a shaft frame rotatably mounted on the upper end of the bearing seat, a gripping assembly fixed on the shaft frame, a driven pulley fixed at the end of the shaft frame, a servo motor mounted on the bearing seat, a driving pulley fixed at the output end of the servo motor, and a belt installed between the driving pulley and the driven pulley.

[0006] Preferably, the picking and placing component includes a transverse linear module fixed inside the upper end of the sub-frame, a longitudinal linear module mounted on the sliding part of the transverse linear module, and a gripping component fixed on the sliding part of the longitudinal linear module.

[0007] Preferably, the discharge mechanism further includes a first conveyor belt fixed at both ends inside the sub-frame, and a second conveyor belt fixed in the middle inside the sub-frame.

[0008] Preferably, a battery cell feeding mechanism is provided in the middle of the rear end of the main frame, a battery cell loading mechanism is provided in the middle of the main frame, welding conveying platforms are provided on both the left and right sides of the front end of the main frame, and welding mechanisms are provided on both the left and right sides of the front end of the main frame.

[0009] Preferably, welding strip unwinding mechanisms are provided on both the left and right sides of the rear end of the main frame, and welding strip traction and cutting mechanisms are provided on both the left and right sides of the rear end inside the main frame.

[0010] Beneficial effects This invention provides a non-standard spacing string welding machine. Compared with the prior art, it has the following advantages: 1. When the power component drives the guide plate to move longitudinally, the symmetrical inclined grooves arranged on both sides of the guide plate will move relative to the guide wheels installed on each carriage. Due to the inclined guiding effect of the inclined grooves, the movement of the guide wheels in the inclined grooves will force all carriages to slide laterally towards or away from each other on the base plate, thereby driving the lateral spacing of the mounting plate fixed at the lower end of the carriage and the suction cups at both ends. This enables the two suction cups on each mounting plate to be configured to independently adsorb one battery cell, which can simultaneously grasp battery strings welded from multiple battery cells. During the subsequent flipping process performed by the flipping component and the transfer process performed by the pick-and-place component, each suction cup is always precisely aligned with the specific battery cell it adsorbs, avoiding unstable adsorption, local stress concentration, or mutual scratching between battery cells caused by differences in battery cell size or spacing. This improves the compatibility with diverse product formulations, the stability of the handling process, and the yield of the final product.

[0011] 2. After the servo motor starts, its output drives the active pulley to rotate, and transmits power to the driven pulley fixed at the end of the shaft frame through the belt. This drives the entire shaft frame, which is coaxially connected to the driven pulley, to rotate on the shaft seat, so that the gripping component fixed on the shaft frame and the battery string it adsorbs complete the flipping action. The horizontal linear module drives the vertical linear module on its sliding part and the gripping component fixed at the end of the module to move precisely to the predetermined position above the flipping component. Then, the vertical linear module is started, driving the gripping component at its end to descend, contact and adsorb the battery string carried by the gripping component that has been flipped and temporarily stored on the flipping component. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the material discharge mechanism in this utility model; Figure 3 This is a schematic diagram of the structure of the flipping component in this utility model; Figure 4 This is a schematic diagram of the gripping component in this utility model; Figure 5 This is a schematic diagram of the pick-and-place component in this utility model.

[0013] In the diagram: 1. Main frame; 2. Sub-frame; 3. Discharge mechanism; 31. Tilting assembly; 311. Shaft seat; 312. Shaft bracket; 313. Driven pulley; 314. Servo motor; 315. Drive pulley; 316. Belt; 32. Pick-and-place assembly; 321. Horizontal linear module; 322. Vertical linear module; 33. Gripping assembly; 331. Base plate; 332. Slide carriage; 333. Mounting plate; 334. Suction cup; 335. Guide wheel; 336. Guide plate; 337. Inclined groove; 338. Power component; 34. First transmission belt; 35. Second transmission belt; 4. Welding strip unwinding mechanism; 5. Welding strip traction and cutting mechanism; 6. Battery cell feeding mechanism; 7. Battery cell loading mechanism; 8. Welding conveyor platform; 9. Welding mechanism. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1 - Figure 5 This utility model provides a technical solution: an irregularly spaced string welding machine, including a main frame 1, a sub-frame 2 fixed to the front end of the main frame 1, and a discharge mechanism 3 provided on the sub-frame 2 for discharging the battery cells after processing. The discharge mechanism 3 includes: A flipping assembly 31 is mounted on the sub-frame 2 and is used for flipping the battery cells. The pick-and-place assembly 32 is mounted on the sub-frame 2 and is used for picking up and placing battery cells. The gripping component 33 includes a base plate 331 disposed on the flipping component 31 and the pick-and-place component 32. Several slides 332 are horizontally slidably mounted on the base plate 331. A mounting plate 333 is fixed to the lower end of the slides 332. Suction cups 334 are mounted on both ends of the mounting plate 333. Guide wheels 335 are rotatably mounted on the surface of the slides 332. A guide plate 336 is vertically slidably mounted on the base plate 331. Several symmetrically arranged inclined grooves 337 are opened on both the left and right sides of the guide plate 336, and the guide wheels 335 are located inside the inclined grooves 337. A power component 338 is disposed on the base plate 331 and is used to drive the guide plate 336 to move.

[0016] In this embodiment, when the power component 338 drives the guide plate 336 to move longitudinally, the symmetrical inclined grooves 337 arranged on both sides of the guide plate 336 will move relative to the guide wheels 335 mounted on each carriage 332. Due to the inclined guiding effect of the inclined grooves 337, the movement of the guide wheels 335 in the inclined grooves 337 will force all carriages 332 to slide laterally towards or away from each other on the base plate 331, thereby driving the lateral spacing of the mounting plate 333 fixed to the lower end of the carriage 332 and the suction cups 334 at both ends; realizing the lateral spacing of each mounting plate. The two suction cups 334 on 333 are configured to independently adsorb one battery cell each, enabling them to simultaneously grasp battery strings composed of multiple battery cells welded together. During the subsequent flipping process performed by the flipping component 31 and the transfer process performed by the pick-and-place component 32, each suction cup 334 is always precisely aligned with the specific battery cell it adsorbs. This avoids unstable adsorption, localized stress concentration, or mutual scratching between battery cells caused by differences in battery cell size or spacing, thereby improving compatibility with diverse product formulations, stability of the handling process, and the yield of the final product.

[0017] Specifically, the flipping assembly 31 also includes bearing seats 311 fixed at the left and right ends inside the sub-frame 2. A shaft frame 312 is rotatably mounted on the upper end of the bearing seat 311, and a gripping assembly 33 is fixed on the shaft frame 312. A driven pulley 313 is fixed at the end of the shaft frame 312. A servo motor 314 is mounted on the bearing seat 311. An active pulley 315 is fixed at the output end of the servo motor 314. A belt 316 is installed between the active pulley 315 and the driven pulley 313.

[0018] In this embodiment, after the servo motor 314 is started, its output end drives the active pulley 315 to rotate, and transmits the power to the driven pulley 313 fixed at the end of the shaft frame 312 through the belt 316, thereby driving the entire shaft frame 312, which is coaxially connected with the driven pulley 313, to rotate on the shaft seat 311, so that the gripping component 33 fixed on the shaft frame 312 and the battery string it adsorbs complete a 180-degree flipping action.

[0019] Specifically, the pick-and-place assembly 32 includes a transverse linear module 321 fixed inside the upper part of the sub-frame 2, a longitudinal linear module 322 mounted on the sliding part of the transverse linear module 321, and a gripping assembly 33 fixed on the sliding part of the longitudinal linear module 322.

[0020] In this embodiment, the horizontal linear module 321 drives the vertical linear module 322 on its slider and the gripping component 33 fixed at the end of the module to move precisely to a predetermined position above the flipping component 31; then the vertical linear module 322 is activated, driving the gripping component 33 at its end to descend, contact and adsorb the battery string carried by the gripping component 33 which has been flipped and temporarily stored on the flipping component 31.

[0021] Specifically, the discharge mechanism 3 also includes a first conveyor belt 34 fixed at both ends inside the sub-frame 2, and a second conveyor belt 35 fixed in the middle inside the sub-frame 2. After welding, the battery string is smoothly sent from the welding conveyor platform 8 to the first conveyor belt 34 to complete the initial positioning and transfer. The gripping component 33 on the flipping component 31 accurately descends and adsorbs and grips the battery string, and under the drive of the servo motor 314, the battery string is rotated 180 degrees through the shaft frame 312.

[0022] In this embodiment, after the flipping is completed, another gripping component 33 on the pick-and-place component 32 immediately intervenes, adsorbs and grabs it and moves it out of the flipping station; under the drive of the horizontal linear module 321 and the vertical linear module 322, the gripping component 33 places the battery string that has completed the attitude adjustment on the second conveyor belt 35, which then transports it to the next process.

[0023] Specifically, a battery cell feeding mechanism 6 is provided in the middle of the rear end of the main frame 1, a battery cell loading mechanism 7 is provided in the middle of the main frame 1, a welding conveying platform 8 is provided on both the left and right sides of the front end of the main frame 1, and a welding mechanism 9 is provided on both the left and right sides of the front end of the main frame 1.

[0024] In this embodiment, the cell feeding mechanism 6 is responsible for continuously supplying the original cells, and then the cell loading mechanism 7 receives the cells from the feeding mechanism 6, places them on the welding conveying platforms 8 on the left and right sides and arranges them, and then the welding mechanism 9 applies heat and pressure to the precisely positioned cells and welding strips to complete the electrical connection and form a complete battery string.

[0025] Specifically, welding strip unwinding mechanisms 4 are provided on both the left and right sides of the rear end of the main frame 1, and welding strip traction and cutting mechanisms 5 are provided on both the left and right sides of the rear end inside the main frame 1.

[0026] In this embodiment, the welding strip unwinding mechanism 4 is responsible for carrying the coiled welding strip material and providing controllable tension during the unwinding process. The welding strip is then pulled out from the unwinding mechanism 4 by the welding strip traction and cutting mechanism 5 and sent to the welding conveying platform 8.

[0027] The working principle and usage process of this utility model are as follows: First, the welding strip unwinding mechanism 4 located on both sides of the rear end of the main frame 1 continuously outputs welding strip, which is precisely pulled out and cut to a fixed length by the adjacent welding strip traction and cutting mechanism 5. Then, these welding strip segments are transported to the welding conveying platform 8 in front. At the same time, the battery cell feeding mechanism 6 located in the middle of the rear end of the main frame 1 outputs the battery cells in an orderly manner. The battery cell loading mechanism 7 accurately grabs and transfers them to the welding conveying platform 8, which has been laid with welding strip. The platform 8 is responsible for accurately positioning and arranging the battery cells and welding strip with a preset irregular spacing. Next, the welding mechanism 9, symmetrically arranged on both sides of the front end of the main frame 1, applies precise heat and pressure to the precisely positioned battery cells and welding strips to complete a reliable electrical connection and form a complete battery string. After welding, the battery string is transported to the first conveyor belt 34 on the sub-frame 2, and then gripped by the gripping component 33 on the flipping component 31. The gripping component 33, through its unique linkage mechanism consisting of a power component 338 driving a guide plate 336 and an inclined groove 337, adaptively adjusts the spacing of all suction cups 334 to perfectly match the irregular layout of the battery string, ensuring stable gripping. Subsequently, the servo motor 314 drives the drive shaft frame 312 via the belt 316 to drive the entire gripping component 33 and the battery string to rotate stably by 180 degrees, preparing for the next process. After the rotation is completed, another gripping component 33 on the pick-and-place component 32 moves to the top of the rotation station and descends under the drive of the horizontal linear module 321 and the vertical linear module 322, accurately gripping the rotated battery string, and then transferring and placing it on the second conveyor belt 35. Finally, the second conveyor belt 35 transports the battery string to subsequent packaging and other processes, thus completing the entire automated processing from raw materials to finished battery strings.

[0028] 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.

[0029] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-standard spacing string welding machine, comprising a main frame (1), with a sub-frame (2) fixed at the front end of the main frame (1), characterized in that: The subframe (2) is equipped with a discharge mechanism (3) for discharging the battery cells after processing. The discharge mechanism (3) includes: A flipping assembly (31) is mounted on the subframe (2) and used for flipping the battery cells; The pick-and-place assembly (32) is mounted on the sub-frame (2) and used for picking up and placing battery cells; The gripping component (33) includes a base plate (331) disposed on the flipping component (31) and the pick-and-place component (32). Several carriages (332) are horizontally slidably mounted on the base plate (331). A mounting plate (333) is fixed at the lower end of the carriage (332). Suction cups (334) are mounted on both ends of the mounting plate (333). Guide wheels (335) are rotatably mounted on the surface of the carriage (332). A guide plate (336) is vertically slidably mounted on the base plate (331). Several inclined grooves (337) are symmetrically arranged on both the left and right sides inside the guide plate (336). The guide wheels (335) are located inside the inclined grooves (337). A power component (338) is disposed on the base plate (331) and is used to drive the guide plate (336) to move.

2. The irregularly spaced string welding machine according to claim 1, characterized in that: The flipping assembly (31) also includes a bearing seat (311) fixed inside the left and right ends of the subframe (2). A shaft frame (312) is rotatably mounted on the upper end of the bearing seat (311), and a gripping assembly (33) is fixed on the shaft frame (312). A driven pulley (313) is fixed at the end of the shaft frame (312). A servo motor (314) is mounted on the bearing seat (311). An active pulley (315) is fixed at the output end of the servo motor (314). A belt (316) is installed between the active pulley (315) and the driven pulley (313).

3. The irregularly spaced string welding machine according to claim 1, characterized in that: The pick-and-place assembly (32) includes a transverse linear module (321) fixed inside the upper end of the subframe (2), a longitudinal linear module (322) is mounted on the sliding part of the transverse linear module (321), and a gripping assembly (33) is fixed on the sliding part of the longitudinal linear module (322).

4. The irregularly spaced string welding machine according to claim 1, characterized in that: The discharge mechanism (3) also includes a first conveyor belt (34) fixed at both ends inside the sub-frame (2), and a second conveyor belt (35) fixed in the middle inside the sub-frame (2).

5. The irregularly spaced string welding machine according to claim 1, characterized in that: The main frame (1) has a battery cell feeding mechanism (6) in the middle of the rear end, a battery cell loading mechanism (7) in the middle of the main frame (1), a welding conveying platform (8) in the left and right sides of the front end of the main frame (1), and a welding mechanism (9) in the left and right sides of the front end of the main frame (1).

6. The irregularly spaced string welding machine according to claim 1, characterized in that: The main frame (1) is provided with welding strip unwinding mechanism (4) on both the left and right sides of the rear end, and welding strip traction and cutting mechanism (5) is provided on both the left and right sides of the rear end inside the main frame (1).

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