Pole lug shaping device for pre-unloading pole group into groove

Abstract

The pole lug shaping device comprises a conveying belt, a pole group clamp and a clamping jaw mechanism, the clamping jaw mechanism comprises a translation lifting assembly, a bearing plate is horizontally arranged at the driving end of the translation lifting assembly, and a pole group clamping part and a pole lug shaping part are arranged on the bearing plate; the tab shaping part is provided with two clamping plates and a driving piece, the clamping plates are provided with straightening strip openings matched with the row number of tabs of a pole group, and when the driving piece enables the two clamping plates to be located at a first relative position, the corresponding straightening strip openings in the two clamping plates form a penetrating tab shaping opening; and when the driving piece enables the two clamping plates to move towards the second relative position, the width of the tab shaping opening is gradually reduced, and straightening constraint on the tab is formed. According to the invention, the tabs can be shaped when the plate group is pre-fed into the slot, so that the tabs in the same row can be kept on the same straight line, the problems caused by skew of the tabs during slot feeding are reduced, and the slot feeding stability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and particularly relates to an ear shaping device for pre-lowering a battery plate group into a slot. Background Art

[0002] During the processing of a battery, first, electrode plates are processed. From the assembly of the electrode plates to the process before being finally loaded into the battery case for cast welding, the processing is carried out in units of plate groups (i.e., battery plate groups) configured in series according to capacity. A battery plate group is composed of several positive and negative electrode plates and separators between the positive and negative electrode plates. Each electrode plate has an ear. In each battery plate group, the ears of all the positive electrode plates are arranged in a row on one side of the top surface of the battery plate group to form a positive ear row, and the ears of all the negative electrode plates are arranged in a row on the other side of the top surface of the battery plate group to form a negative ear row. The ears of the same polarity are connected in series by cast welding, and then the battery plate group is loaded into the battery case for cast welding.

[0003] During the production of a battery, after the battery plate group inside the battery is wrapped, a plurality of battery plate groups on the conveyor belt are placed into the battery plate group fixture of the pre-lowering slot machine through a translation and lifting assembly. The plurality of battery plate groups (battery plate group sets) are extruded to a specified thickness by the battery plate group fixture, and finally, the battery plate group set is pre-lowered into the slot of the battery plastic case through a thimble to complete the pre-lowering slot operation. However, during the wrapping or plate loading and extrusion process, the ears may be slightly skewed, and the ears in the same row cannot be kept in a straight line, resulting in problems such as easy damage to the battery plate group during the slotting process, deformation of the ears, or damage to the battery plastic case, seriously affecting the production quality and production effect of the battery. Summary of the Invention

[0004] The purpose of the present invention is to provide an ear shaping device for pre-lowering a battery plate group into a slot, which can shape the ears when the battery plate group is pre-lowered into the slot, so that the ears in the same row can be kept in the same straight line, reduce problems occurring during the slotting process due to ear skew, and improve the stability of the slotting.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: an ear shaping device for pre-lowering a battery plate group into a slot, including a conveyor belt, a battery plate group fixture, and a jaw mechanism. The jaw mechanism includes a translation and lifting assembly. A bearing plate is horizontally arranged on the driving end of the translation and lifting assembly. A battery plate group clamping part and an ear shaping part are arranged on the bearing plate. It is characterized in that: two clamping plates are arranged in parallel up and down on the ear shaping part, and a driving part for driving their relative displacement in the horizontal plane is provided. Straightening strip openings matching the number of rows of ears of the battery plate group are arranged on the clamping plates. When the driving part makes the two clamping plates in a first relative position, the corresponding straightening strip openings on the two clamping plates form a penetrating ear shaping opening; when the driving part makes the two clamping plates move to a second relative position, the width of the ear shaping opening gradually decreases and forms a straightening constraint on the ears.

[0006] A further improvement of the present invention is that the two clamping plates are arranged in a staggered manner, and limit blocks are provided at the ends of their opposite surfaces that are far away from each other. A guiding strip block is horizontally provided at the upper end of the limit block. A constraint gap is formed between the lower end surface of the guiding strip block and the upper end surface of the clamping plate where it is located. One end of each clamping plate is slidably connected within the constraint gap of the other clamping plate.

[0007] A further improvement of the present invention is that a tab shaping component is further provided on the tab shaping part. The tab shaping component includes a first telescopic cylinder arranged on one side of the two clamping plates. The telescopic end of the first telescopic cylinder is arranged along the length direction of the electrode group, and a second telescopic cylinder with a vertically downward telescopic end is provided thereon. A connecting plate is provided at the end of the second telescopic cylinder, and shaping rods that are in clearance fit with the tab row are arranged at intervals on the connecting plate.

[0008] A further improvement of the present invention is that the shaping rod is rotatably connected to the connecting plate, and its cross-section is oval. A steering component for driving all the shaping rods on it to rotate synchronously is provided on the connecting plate.

[0009] A further improvement of the present invention is that the steering component includes a connecting column provided at one end of the shaping rod. The connecting column is rotatably connected to the connecting plate. A gear is coaxially provided on the connecting column. A rack that meshes with all the gears is slidably connected to the connecting plate. A second driving part for driving its movement is provided at one end of the rack.

[0010] A further improvement of the present invention is that there are two first telescopic cylinders, symmetrically arranged on both sides of the two clamping plates. The shaping rods on the two first telescopic cylinders correspond to each other during shaping.

[0011] A further improvement of the present invention is that the second driving part includes a motor provided on the connecting plate. A driving gear is coaxially provided on the output shaft of the motor. The driving gear meshes with the rack.

[0012] A further improvement of the present invention is that the second telescopic cylinder is a rotary telescopic cylinder.

[0013] The beneficial effects of the present invention are as follows: Through the cooperation of the horizontally adjustable double clamping plates and the straightening slot opening, the present invention gradually reduces the width of the straightening slot opening through the horizontal relative movement of the clamping plates, can effectively correct the offset in the direction of the tab row (transverse), can shape the tabs during the pre-lowering of the electrode group, enables the tabs in the same row to be kept on the same straight line, reduces problems during lowering due to skewed tabs, and improves the stability of lowering.

[0014] In the present invention, by providing offset clamping plates, one end of each clamping plate is slidably connected within the restraint gap of another clamping plate to limit the movement trajectory of the clamping plate. The guide bar block can support one end of the clamping plate, improving the stability of the clamping plate.

[0015] In the present invention, by providing an ear tab column shaping assembly, the shaping rod is inserted into the ear tab column gap, and then the upper ear tabs are corrected by raising the shaping rod so that a spacing is maintained between the ear tabs, thereby achieving shaping in the direction (longitudinal direction) of the ear tab column.

[0016] In the present invention, by rotating the shaping rod with an elliptical cross-section, before inserting into the ear tab column gap, the major axis of the elliptical cross-section is kept vertical to reduce the width for easier insertion into the ear tab column gap. After insertion, the ear tab column spacing can be initially adjusted by rotating the shaping rod, and then the ear tab column spacing is further corrected by raising.

[0017] The second telescopic cylinder of the present invention is a rotary telescopic cylinder, having two rotary positioning states: a working position and an avoidance position, capable of adjusting the orientation of the shaping rod. When not in use, the shaping rod originally along the length direction of the electrode group can be adjusted to face the width direction of the electrode group, reducing the space occupation in the width direction of the production line and making the structure more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view schematic diagram of the structure of the present invention.

[0019] Figure 2 It is a front view sectional schematic diagram of the clamping plate of the present invention.

[0020] Figure 3 It is a bottom view structure schematic diagram of the clamping plate of the invention (the upper clamping plate of the two clamping plates).

[0021] Figure 4 It is a schematic diagram of the rack structure of the present invention.

[0022] In the figure, 1 - conveyor belt, 2 - electrode group fixture, 3 - translation and lifting assembly, 4 - carrier plate, 5 - electrode group clamping part, 6 - clamping plate, 7 - driving member, 8 - straightening strip opening, 9 - limiting block, 10 - guide bar block, 12 - first telescopic cylinder, 13 - second telescopic cylinder, 14 - connecting plate, 15 - shaping rod, 16 - connecting column, 17 - gear, 18 - rack, 19 - second driving member, 20 - driving gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further clarifies the present invention in conjunction with the accompanying drawings and specific embodiments.

[0024] Embodiment 1: In combination with Figures 1 to 4It can be seen that an ear shaping device for a pre-lower slot of a battery plate group includes a conveyor belt 1, a battery plate group fixture 2, and a jaw mechanism. The jaw mechanism includes a translation and lifting assembly 3. A bearing plate 4 is horizontally arranged on the driving end of the translation and lifting assembly 3. A battery plate group clamping part 5 and an ear shaping part are arranged on the bearing plate 4. Two clamping plates 6 arranged parallel up and down are provided on the ear shaping part, and a driving part 7 for driving the relative displacement of the two in the horizontal plane is provided. Straightening strip openings 8 matching the number of rows of the ears of the battery plate group are arranged on the clamping plates 6. When the driving part 7 makes the two clamping plates 6 in the first relative position, the corresponding straightening strip openings 8 on the two clamping plates 6 form a penetrating ear shaping opening; when the driving part 7 makes the two clamping plates 6 move towards the second relative position, the width of the ear shaping opening gradually decreases and forms a straightening constraint on the ears.

[0025] The conveyor belt 1, the battery plate group fixture 2, the translation and lifting assembly 3, and the battery plate group clamping part 5 are conventional mechanisms in the prior art for moving the battery plate group from the conveyor belt into the battery plate group fixture, and belong to the conventional automated equipment in the battery industry. Among them, the translation and lifting assembly 3 and the battery plate group clamping part 5 can refer to Chinese Patent CN201822158216.7, with the patent name "An Equipment for Battery Plate Group Entering Fixture", and the battery plate group fixture 2 can refer to Chinese Patent CN202421227403.5, with the patent name "A Double-Station Fixture for Battery Plate Group Entering Slot".

[0026] The battery plate group fixture can arrange multiple battery plate groups as required (such as 6 battery plate groups in two rows and three columns) and extrude them to a specified thickness. Preferably, it can extrude in the length direction and width direction of the battery plate group; the translation and lifting assembly 3 includes a translatable translation seat and a lifting rod arranged on one side of the translation seat; two pneumatic jaws are arranged on the battery plate group clamping part 5, and two battery plate groups can be clamped at a time (for example, for a battery with 6 battery plate groups in two rows and three columns, 2 are clamped by two pneumatic jaws each time, and only 3 synchronous clamping operations are required to complete the clamping and placing of a group).

[0027] In the present invention, the two clamping plates 6 are arranged in a staggered manner, and limit blocks 9 are provided at the ends (far ends) of the opposite surfaces of the two that are away from each other. A guiding strip block 10 is horizontally arranged at the upper end of the limit block 9. A constraint gap is formed between the lower end surface of the guiding strip block 10 and the upper end surface of the clamping plate 6 where it is located. One end of each clamping plate 6 is slidably connected in the constraint gap of the other clamping plate.

[0028] Preferably, the driving part 7 is a double-rod cylinder. Piston rods extend from both ends of the double-rod cylinder, and the two clamping plates 6 can be connected through a connecting block. When the piston moves, the two clamping plates 6 move synchronously and in opposite directions along with the piston rods.

[0029] The two clamping plates 6 include a clamping plate located at the top (referred to as the upper clamping plate) and a clamping plate located at the bottom (referred to as the lower clamping plate). One end of the upper clamping plate is driven by a driving member 7, and the other end is supported by a constraint gap formed by the lower clamping plate and the guide strip 10 on the lower clamping plate, ensuring that the clamping plate 6 moves only along a set horizontal track, and the lower clamping plate is similar. Preferably, the opposing surfaces of the two clamping plates 6 are in sliding contact.

[0030] The length of the straightening strip 8 is greater than the width of the pole group, and the width is greater than the length of the pole ear. The existing pole group clamp 2 can first perform preliminary extrusion on the inserted pole group to make it within a specified range, and then the clamp of the present invention straightens the pole ear of the pole group. After straightening, the pole group clamp 2 further extrudes the pole group to a specified thickness.

[0031] The pole ear shaping part is also provided with a pole ear row shaping assembly, which includes a first telescopic cylinder 12 arranged on one side of the two clamping plates 6, the telescopic end of the first telescopic cylinder 12 is arranged along the length direction of the pole group and a second telescopic cylinder 13 with a telescopic end vertically downward is arranged thereon, and a connecting plate 14 is provided at the end of the second telescopic cylinder 13, and a shaping rod 15 that matches the gap of the pole ear row is arranged on the connecting plate 14. Preferably, the second telescopic cylinder 13 is a rotary telescopic cylinder.

[0032] Preferably, the shaping rod 15 is rotatably connected to the connecting plate 14, and its cross section is an ellipse, and its long axis length is adapted to the spacing between the pole lugs. The connecting plate 14 is provided with a steering assembly that drives all the shaping rods 15 thereon to rotate synchronously. When inserting the adjacent pole lugs, the long axis of the ellipse is turned vertically by the rack 18, and then gradually rotated after insertion to make the long axis horizontal, and the long axis horizontally expands the gap between the pole lugs that is smaller than the standard spacing, thereby adapting to the smaller gap between the adjacent pole lugs that may be caused by skewness, and ensuring that the shaping rod 15 can be inserted.

[0033] The steering assembly includes a connecting column 16 disposed at one end of the shaping rod 15, the connecting column 16 is rotatably connected to the connecting plate 14, a gear 17 is coaxially provided on the connecting column 16, a rack 18 meshing with all the gears 17 is slidably connected to the connecting plate 14, and a second driving member 19 is provided at one end of the rack 18 to drive it to move. Preferably, two first telescopic cylinders 12 are provided, symmetrically arranged on both sides of the two clamping plates 6, and the shaping rods 15 on the two first telescopic cylinders 12 correspond to each other during shaping. Compared with only one, the length of a single shaping rod can be reduced and the stability of the shaping rod can be improved.

[0034] The pole group clamping part includes two symmetrically arranged pneumatic clamps, which are used to clamp and place the pole group. One of the first telescopic cylinders 12 of the present invention can be located between the two pneumatic clamps to improve the space utilization in the width direction of the production line.

[0035] Preferably, the second driving member 19 includes a motor disposed on the connecting plate. A driving gear 20 is coaxially provided on the output shaft of the motor. The driving gear 20 meshes with the rack 18. The connecting column 16 is rotatably connected to one side of the connecting plate 14. The motor is disposed on the other side of the connecting plate 14. The connecting plate 14 is provided with a through hole facilitating the penetration of the output shaft of the battery. The length direction of the output shaft of the motor is consistent with the length direction of the shaping rod 15. The motor drives the driving gear 20 to rotate, thereby driving the rack 18 to move along the length direction of the connecting plate 14, further driving the gear 18 to rotate, driving the connecting column 16 to rotate, and further driving the shaping rod 15 to rotate.

[0036] The working principle of the ear shaping device for pre-lowering the electrode group provided by the invention is as follows: The translation and lifting assembly 3 drives the carrier plate 4 to drive the electrode group clamping portion 5 to clamp the electrode group, and transfer it from the conveyor belt 1 to the electrode group fixture 2. When the electrode group fixture 2 is full, the electrode group fixture 2 is activated to perform a preliminary extrusion on the electrode group. Through the translation and lifting assembly 3, the straightening strip openings 8 of the two clamping plates 6 are matched with each row of ear tabs, and the ear tabs are inserted into the penetrating ear shaping openings. The upper and lower clamping plates 6 are driven by the driving member 7 to move horizontally towards each other, so that the width of the shaping opening formed by the straightening strip openings 8 gradually becomes narrower from wide, applying a lateral extrusion force to the direction of the ear tab row to eliminate the lateral misalignment; Subsequently, the second telescopic cylinders 13 on both sides extend, and the first telescopic cylinder 12 extends, pushing the shaping rod 15 into the gap between the ear tab columns. After the second driving member 19 drives the elliptical cross-section shaping rod 15 to rotate 90° (when inserting into the adjacent row of ear tabs, the long axis of the ellipse is rotated to the vertical by the rack 18, and then gradually rotated after insertion to make the long axis horizontal), the shaping rod 15 is lifted by the translation and lifting assembly 3, and the ear tab column spacing is expanded by the long axis of the ellipse to correct the longitudinal offset. After straightening, the electrode group fixture 2 secondarily extrudes the electrode group to the target thickness.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, is similarly included in the patent protection scope of the present invention.

Claims

1. A pole ear shaping device for pole group pre-slotting, comprising a conveyor belt (1), a pole group clamp (2) and a clamping claw mechanism, wherein the clamping claw mechanism comprises a translation lifting assembly (3), a bearing plate (4) is horizontally arranged on the driving end of the translation lifting assembly (3), and a pole group clamping portion (5) and a pole ear shaping portion are arranged on the bearing plate (4), characterized in that: The pole lug shaping portion is provided with two clamping plates (6) arranged in parallel up and down, and a driving member (7) for driving the relative displacement of the two clamping plates in a horizontal plane; the clamping plates (6) are provided with straightening strips (8) matching the number of pole lug rows of the pole group; when the driving member (7) causes the two clamping plates (6) to be in a first relative position, the corresponding straightening strips (8) on the two clamping plates (6) form a penetrating pole lug shaping opening; when the driving member (7) causes the two clamping plates (6) to move to a second relative position, the width of the pole lug shaping opening gradually decreases and forms a straightening constraint on the pole lug.

2. The pole ear shaping device for pole group pre-slot according to claim 1, characterized in that: The two clamping plates (6) are staggered, and a limit block (9) is provided at one end of the opposite surface of the two plates that is away from each other. A guide strip (10) is horizontally provided at the upper end of the limit block (9). A constraint gap is formed between the lower end surface of the guide strip (10) and the upper end surface of the clamping plate (6) where it is located, and one end of each clamping plate (6) is slidably connected in the constraint gap of the other clamping plate.

3. A pole ear shaping device for pole group pre-slot according to claim 1 or 2, characterized in that: The pole lug shaping portion is also provided with a pole lug row shaping assembly, the pole lug row shaping assembly comprising a first telescopic cylinder (12) arranged on one side of two clamping plates (6), the telescopic end of the first telescopic cylinder (12) being arranged along the length direction of the pole group and a second telescopic cylinder (13) being arranged thereon with the telescopic end pointing vertically downward, a connecting plate (14) being provided at the end of the second telescopic cylinder (13), and shaping rods (15) being arranged at intervals on the connecting plate (14) to match the gap of the pole lug row.

4. The pole ear shaping device for pole group pre-slot according to claim 3, characterized in that: The shaping rod (15) is rotatably connected to the connecting plate (14) and has an elliptical cross section. The connecting plate (14) is provided with a steering assembly for driving all the shaping rods (15) thereon to rotate synchronously.

5. The pole ear shaping device for pole group pre-slot according to claim 4, characterized in that: The steering assembly comprises a connecting column (16) arranged at one end of the shaping rod (15), the connecting column (16) being rotatably connected to the connecting plate (14), a gear (17) being coaxially arranged on the connecting column (16), a rack (18) meshing with all the gears (17) being slidably connected to the connecting plate (14), and a second driving member (19) for driving the rack (18) to move being arranged at one end.

6. The pole ear shaping device for pole group pre-slot according to claim 3, characterized in that: Two of the first telescopic cylinders (12) are symmetrically arranged on both sides of the two clamping plates (6), and the shaping rods (15) on the two first telescopic cylinders (12) correspond to each other one by one during shaping.

7. The pole ear shaping device for pole group pre-slot according to claim 5, characterized in that: The second driving member (19) comprises a motor arranged on the connecting plate, a driving gear (20) being coaxially arranged on the output shaft of the motor, and the driving gear (20) being meshed with the rack (18).

8. The pole ear shaping device for pole group pre-slot according to claim 3, characterized in that: The second telescopic cylinder (13) is a rotary telescopic cylinder.

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