Tab bending device for large cylindrical lithium battery winding machine

Abstract

The utility model provides a pole lug bending device for a large cylindrical lithium battery coiler, which relates to the technical field of battery processing and comprises a processing frame and a pole lug bending mechanism, the pole lug bending mechanism is mounted on the upper side of the processing frame, and the pole lug bending mechanism is mounted on the upper side of the processing frame. The laser range finder can detect the feeding amount of tab metal sheets through the laser probe, the problem that the tab metal sheets cannot be used subsequently due to the fact that the tab metal sheets are too long or too short is avoided, the electric heater can conduct heat into the metal heating extrusion table through the heat transfer sheet, and the metal heating extrusion table can heat the tab metal sheets through the heat transfer effect between metal. The tab piece is heated and softened, so that the machining process is easier, the tab is not affected, the folding effect is better, meanwhile, the telescopic pump can drive the metal heating and extruding table to move downwards through the telescopic rod, the metal heating and extruding table directly extrudes the tab piece, and therefore the tab piece is fixed; and meanwhile, the heating effect is better, and the efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of battery processing, in particular to an ear bending device for a large cylindrical lithium battery winding machine. Background Technique

[0002] The ear bending device for a large cylindrical lithium battery winding machine is a high-precision mechanical device, which is used to accurately bend the ears on the positive and negative electrode plates during the production process of cylindrical lithium-ion batteries, so as to facilitate subsequent welding and assembly processes. This device is usually integrated in the battery winding machine and controls the bending die through a hydraulic or pneumatic drive system to achieve rapid and accurate bending of the ears, ensuring the consistency and performance stability of the battery. It is a key technical equipment for improving the production efficiency and product quality of lithium batteries.

[0003] After retrieval, the text of the publication number "CN213340471U" mentions that "the utility model relates to a lithium battery winding machine, belonging to the field of lithium batteries, which includes a bracket. The bracket includes a first mounting plate, a circular mounting hole is opened on the first mounting plate, a first turntable is arranged in the circular mounting hole, a first mounting hole and a second mounting hole are opened on the first turntable, a first rotating shaft and a second rotating shaft are rotatably arranged in the first mounting hole and the second mounting hole respectively, and a first support plate and a second support plate are respectively arranged on the first rotating shaft and the second rotating shaft; a first support roller and a second support roller are also arranged on the first mounting plate; a first mounting roller and a second mounting roller are arranged corresponding to the first support roller and the second support roller on the first mounting plate, a first winding drum and a second winding drum are rotatably arranged on the first mounting roller and the second mounting roller, and diaphragm belts are wound on both the first winding drum and the second winding drum; a first guide plate and a second guide plate are also arranged on the first mounting plate". When in use, the winding efficiency of the utility model is high. However, during the ear processing of lithium batteries, since the ears are made of metal material, during the bending process, due to the relatively hard material of the metal, the bending effect is prone to be poor after bending, and at the same time, the shape after bending is also prone to not meet the qualified standard, resulting in a high scrap rate.

[0004] Therefore, we provide an ear bending device for a large cylindrical lithium battery winding machine to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an ear bending device for a large cylindrical lithium battery winding machine to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an ear bending device for a large cylindrical lithium battery winding machine, including a processing frame and an ear bending mechanism, and the ear bending mechanism is installed on the upper side of the processing frame;

[0007] The tab bending mechanism includes a length measurement component, a bending assistance component, and a bending component. The length measurement component is arranged on the upper side of the processing frame. The bending assistance component is installed on the left side of the length measurement component, and the bending component is installed on the left side of the bending assistance component.

[0008] Preferably, the length measurement component includes a laser rangefinder and a laser probe. The laser rangefinders are installed on the upper side of the processing frame, and the laser probes are arranged inside the laser rangefinders.

[0009] Preferably, the bending assistance component includes an electric heater, a telescopic pump, a telescopic rod, a force-receiving table, a heat transfer sheet, and a metal heating and extrusion table. The electric heater is installed on the left side of the laser rangefinder, the telescopic pump is installed on the left side of the electric heater, the telescopic rods are installed on the upper side of the telescopic pump, the force-receiving table is arranged in the middle of the telescopic rods, the heat transfer sheet is installed on the lower side of the force-receiving table, and the metal heating and extrusion table is installed on the lower side of the heat transfer sheet.

[0010] Preferably, the connection between the telescopic pump and the telescopic rod is a card slot connection, and the telescopic pump and the telescopic rod correspond to each other one by one.

[0011] Preferably, the bending component includes a bending piece, an outer elastic shaft, an outer spring group, a retracting hydraulic pump, a limiting block, a moving groove, and a hydraulic pushing pump. The bending piece is arranged on the left side of the metal heating and extrusion table, the outer elastic shafts are arranged on the outer side of the bending piece, the outer spring groups are connected to the outer elastic shafts by card slots, and the retracting hydraulic pumps are installed on the lower side of the outer spring groups.

[0012] Preferably, the connection between the retracting hydraulic pump and the outer spring group is a welding connection, and the connection between the retracting hydraulic pump and the limiting block is a card slot connection.

[0013] Preferably, the limiting blocks are arranged on the lower side of the retracting hydraulic pumps, the moving grooves are arranged on the lower side of the limiting blocks, and the hydraulic pushing pumps are arranged on the left side of the limiting blocks.

[0014] Preferably, a feeding component is installed on the right side of the laser rangefinder. The feeding component includes a rotating motor and a rubber wheel. The rotating motors are arranged on the right side of the laser rangefinders, and the rubber wheels are installed inside the rotating motors.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. Through the setting of the tab bending mechanism, when in use, the laser rangefinder will detect the feeding amount of the tab metal sheet through the laser probe, avoiding the problem that the length of the tab sheet is too long or too short, resulting in subsequent inoperability. The electric heater will transfer heat to the metal heating and extrusion table through the heat transfer sheet, and the metal heating and extrusion table will soften the tab sheet through the heat transfer effect between metals, making the processing process easier and not affecting the tab, and the folding effect will also be better. At the same time, the telescopic pump will drive the metal heating and extrusion table downward through the telescopic rod, so that the metal heating and extrusion table directly presses on the tab sheet, thereby fixing the tab sheet and making the heating effect better and the efficiency higher.

[0017] 2. Through the setting of the tab bending mechanism, the outer spring group will always extend the bending piece outward through the outer spring shaft. In this way, when bending, when the hydraulic push pump pushes the bending piece inward, the outer spring group will slowly bend the bending piece towards the vertical direction through the outer spring shaft to achieve the bending effect of the tab. After completion, the outer spring group will open the bending piece again through the outer spring shaft. The retractable hydraulic pump will provide support for the height change when the bending piece is bent, thus avoiding damage caused by hard pulling. Finally, the limit block will move left and right along the moving groove, and at the same time, the hydraulic push pump will provide power for the movement of the limit block, so that the bending piece can receive sufficient extrusion force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall external structure of the present invention;

[0019] Figure 2 is a schematic diagram of the bending assistance component structure of the present invention;

[0020] Figure 3 is a schematic diagram of the bending component structure of the present invention;

[0021] Figure 4 is a schematic diagram of the overall side structure of the present invention.

[0022] Reference numerals in the figure: 1, processing frame; 2, tab bending mechanism; 21, length measurement component; 211, laser rangefinder; 212, laser probe; 22, bending assistance component; 221, electric heater; 222, telescopic pump; 223, telescopic rod; 224, force-receiving table; 225, heat transfer sheet; 226, metal heating and extrusion table; 23, bending component; 231, bending piece; 232, outer spring shaft; 233, outer spring group; 234, retractable hydraulic pump; 235, limit block; 236, moving groove; 237, hydraulic push pump; 3, feeding component; 31, rotating motor; 32, rubber wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1

[0025] Please refer to Figures 1-4 As shown, the present invention provides a technical solution: a lug bending device for a large cylindrical lithium battery winding machine, including a processing frame 1 and a lug bending mechanism 2. The lug bending mechanism 2 is installed on the upper side of the processing frame 1;

[0026] The lug bending mechanism 2 includes a length measurement component 21, a bending assistance component 22, and a bending component 23. The length measurement component 21 is arranged on the upper side of the processing frame 1. The bending assistance component 22 is installed on the left side of the length measurement component 21, and the bending component 23 is installed on the left side of the bending assistance component 22.

[0027] Further, the length measurement component 21 includes a laser rangefinder 211 and a laser probe 212. The laser rangefinders 211 are installed on the upper side of the processing frame 1, and the laser probes 212 are arranged inside the laser rangefinders 211. When in use, the laser rangefinder 211 will detect the feeding amount of the lug metal sheet through the laser probe 212 to avoid the problem that the length of the lug sheet is too long or too short, resulting in subsequent unusability.

[0028] Further, the bending assistance component 22 includes an electric heater 221, a telescopic pump 222, a telescopic rod 223, a force-receiving table 224, a heat transfer sheet 225, and a metal heating and extrusion table 226. The electric heater 221 is installed on the left side of the laser rangefinder 211. The telescopic pump 222 is installed on the left side of the electric heater 221. The telescopic rods 223 are installed on the upper side of the telescopic pump 222. The force-receiving table 224 is arranged in the middle of the telescopic rods 223. The heat transfer sheet 225 is installed on the lower side of the force-receiving table 224, and the metal heating and extrusion table 226 is installed on the lower side of the heat transfer sheet 225. When in use, the electric heater 221 will transfer heat to the metal heating and extrusion table 226 through the heat transfer sheet 225, and the metal heating and extrusion table 226 will soften the lug sheet through the heat transfer effect between metals, making the processing process easier, without affecting the lugs, and the folding effect will be better.

[0029] Further, the telescopic pump 222 and the telescopic rod 223 are connected by a card slot, and the telescopic pump 222 and the telescopic rod 223 correspond to each other one by one. When in use, the telescopic pump 222 will drive the metal heating and extrusion table 226 downward through the telescopic rod 223, so that the metal heating and extrusion table 226 directly presses on the tab, thereby fixing the tab, and at the same time making the heating effect better and the efficiency higher.

[0030] Further, the bending assembly 23 includes a bending piece 231, an outer elastic shaft 232, an outer spring group 233, a retractable hydraulic pump 234, a limit block 235, a moving groove 236 and a hydraulic push pump 237. A bending piece 231 is arranged on the left side of the metal heating and extrusion table 226. Outer elastic shafts 232 are arranged on the outer sides of the bending piece 231. Outer spring groups 233 are connected to the outer sides of the outer elastic shafts 232 by card slots. Retractable hydraulic pumps 234 are installed on the lower sides of the outer spring groups 233. When in use, the outer spring group 233 will always extend the bending piece 231 outward through the outer elastic shaft 232. In this way, when bending, when the hydraulic push pump 237 pushes the bending piece 231 inward, the outer spring group 233 will slowly bend the bending piece 231 in the vertical direction through the outer elastic shaft 232, so as to achieve the bending effect on the tab. When it is over, the outer spring group 233 will open the bending piece 231 again through the outer elastic shaft 232.

[0031] Further, the retractable hydraulic pump 234 and the outer spring group 233 are welded, and the retractable hydraulic pump 234 and the limit block 235 are connected by a card slot. When in use, the retractable hydraulic pump 234 will provide support for the height change when the bending piece 231 is bent, so as to avoid damage caused by hard pulling.

[0032] Further, limit blocks 235 are arranged on the lower sides of the retractable hydraulic pumps 234. Moving grooves 236 are arranged on the lower sides of the limit blocks 235. Hydraulic push pumps 237 are arranged on the left sides of the limit blocks 235. When in use, the limit blocks 235 will move left and right along the moving grooves 236, and at the same time the hydraulic push pumps 237 will provide power for the movement of the limit blocks 235, so that the bending piece 231 can receive sufficient extrusion force.

[0033] Embodiment 2

[0034] Please refer to Figure 1 and Figure 4As shown, compared with the first comparative example, as another implementation mode of the present utility model, a feeding component 3 is installed on the right side of the laser rangefinder 211. The feeding component 3 includes a rotating motor 31 and a rubber wheel 32. The rotating motor 31 is arranged on the right side of the laser rangefinder 211, and the rubber wheel 32 is installed inside the rotating motor 31. When in use, the rotating motor 31 drives the rubber wheel 32 to rotate, so that the tab metal sheet can be evenly processed subsequently. The rubber wheel 32 can avoid the problem of insufficient processing length caused by slipping.

[0035] Working principle: Move a tab bending device for a large cylindrical lithium battery winding machine to the working position. When in use, in the first step, first move the processing frame 1 to the position where it is needed. Subsequently, the tab metal sheet is rotated by the rubber wheel 32 of the rotating motor 31 and first passes through the laser probe 212 under the laser rangefinder 211 to measure the length. After the measurement, in the second step, the telescopic pump 222 drives the metal heating and extrusion table 226 under the force receiving table 224 to press the tab through the telescopic rod 223. At the same time, the electric heater 221 heats the metal heating and extrusion table 226 through the heat transfer sheet 225, and the heat will be transferred to the tab. In the third step, the hydraulic push pump 237 pushes the limit block 235 to move along the moving groove 236, and the bending piece 231 directly abuts against the lower side of the tab. As the limit block 235 moves, the bending piece 231 will be slowly straightened under the extrusion of the outer elastic shaft 232 and the outer spring group 233, and the retraction hydraulic pump 234 provides height changes. In this way, the use process of a tab bending device for a large cylindrical lithium battery winding machine is completed.

[0036] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A tab bending device for a large cylindrical lithium battery winding machine, comprising a processing frame (1) and a tab bending mechanism (2), characterized in that: A tab bending mechanism (2) is installed on the upper side of the processing frame (1); The tab bending mechanism (2) comprises a length measuring component (21), a bending auxiliary component (22) and a bending component (23); the length measuring component (21) is arranged on the upper side of the processing frame (1); the bending auxiliary component (22) is installed on the left side of the length measuring component (21); and the bending component (23) is installed on the left side of the bending auxiliary component (22).

2. The lug bending device for a large cylindrical lithium battery winding machine according to claim 1, characterized in that: The length measurement component (21) comprises a laser rangefinder (211) and a laser probe (212); the laser rangefinder (211) is installed on the upper side of the processing frame (1); and the laser probe (212) is arranged on the inner side of the laser rangefinder (211).

3. The lug bending device for a large cylindrical lithium battery winding machine according to claim 2, characterized in that: The bending auxiliary component (22) comprises an electric heater (221), a telescopic pump (222), a telescopic rod (223), a force-bearing platform (224), a heat transfer plate (225) and a metal heating and extruding platform (226). The electric heater (221) is installed on the left side of the laser rangefinder (211), the telescopic pump (222) is installed on the left side of the electric heater (221), the telescopic rod (223) is installed on the upper side of the telescopic pump (222), the force-bearing platform (224) is arranged in the middle of the telescopic rod (223), the heat transfer plate (225) is installed on the lower side of the force-bearing platform (224), and the metal heating and extruding platform (226) is installed on the lower side of the heat transfer plate (225).

4. The lug bending device for a large cylindrical lithium battery winding machine according to claim 3, characterized in that: The telescopic pump (222) and the telescopic rod (223) are connected by a slot, and there is a one-to-one correspondence between the telescopic pump (222) and the telescopic rod (223).

5. The lug bending device for a large cylindrical lithium battery winding machine according to claim 3, characterized in that: The bending assembly (23) comprises a bending piece (231), an outer elastic shaft (232), an outer spring group (233), an inward hydraulic pump (234), a limit block (235), a movable groove (236) and a hydraulic push pump (237); a bending piece (231) is arranged on the left side of the metal heating and extrusion platform (226); an outer elastic shaft (232) is arranged on the outer side of the bending piece (231); an outer spring group (233) is connected to the outer side of the outer elastic shaft (232) by a slot; and an inward hydraulic pump (234) is installed on the lower side of the outer spring group (233).

6. The lug bending device for a large cylindrical lithium battery winding machine according to claim 5, characterized in that: The inward-retracting hydraulic pump (234) and the outer spring assembly (233) are welded, and the inward-retracting hydraulic pump (234) and the limit block (235) are connected by a slot.

7. The lug bending device for a large cylindrical lithium battery winding machine according to claim 5, characterized in that: A limit block (235) is provided on the lower side of the inward-retracting hydraulic pump (234), a moving groove (236) is provided on the lower side of the limit block (235), and a hydraulic push pump (237) is provided on the left side of the limit block (235).

8. The lug bending device for a large cylindrical lithium battery winding machine according to claim 2, characterized in that: A feeding assembly (3) is installed on the right side of the laser rangefinder (211), and the feeding assembly (3) comprises a rotating motor (31) and a rubber wheel (32). The rotating motor (31) is arranged on the right side of the laser rangefinder (211), and the rubber wheel (32) is installed on the inner side of the rotating motor (31).

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