A battery cover plate flanging positioning device

Abstract

This utility model relates to the field of battery manufacturing, and more particularly to a battery cover flange positioning device. The battery cover flange positioning device includes: a base; a transmission box is fixedly connected to the center of the upper surface of the base; a cover body is located on the top of the transmission box; first positioning plates are slidably connected to both ends of the transmission box along its long axis via sliding rods; second positioning plates are slidably connected to both ends of the transmission box along its short axis via sliding rods; the first and second positioning plates are used to limit the horizontal position of the cover body; an adjustment assembly is installed inside the transmission box; a flange box is fixedly connected to the opposite sides of the two second positioning plates via connecting blocks; a flange assembly is installed inside the flange box. The battery cover flange positioning device provided by this utility model has the advantages of adapting to multiple cover sizes, preventing the cover from warping during flange turning, high automation, and high processing precision.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing, and in particular to a battery cover flange positioning device. Background Technology

[0002] The battery cover flange positioning device is a specialized tooling equipment used in battery manufacturing. Its core function is to precisely limit the horizontal position and fix the vertical direction of the cover body during the battery cover processing. Simultaneously, it completes the flange forming operation of the cover edge through a matching flange assembly. This device is widely applicable to the cover processing of various battery products such as power batteries and energy storage batteries. The flange process, as a key step in battery cover production, directly affects the assembly accuracy, sealing performance, and structural stability of the cover and battery casing, thereby ensuring the overall safety, waterproofing, and lifespan of the battery. It is an important guarantee for achieving standardized production of battery products. In existing technologies, battery cover flanging positioning devices still have many shortcomings that require improvement, severely restricting the efficiency and quality of battery cover processing. Firstly, existing devices lack adaptability. Most adopt an integrated fixed structure design, with limited or no adjustable positioning components, only suitable for battery covers of specific sizes. Even for cover products with the same aspect ratio but different dimensions, the entire positioning device must be replaced or custom-made tooling must be created, resulting in poor equipment versatility, increased equipment investment costs, and frequent equipment changes extending production cycles and reducing batch production efficiency. Secondly, during the flanging process, when the flanging component applies a compressive force to the part of the cover to be flanged, the lack of an effective vertical anti-warping constraint structure in existing devices, or uneven contact force between the positioning component and the cover, easily leads to localized warping and displacement of the cover. This problem not only causes deviations in the flanging forming accuracy, resulting in defects such as inconsistent flanging height and edge wrinkles, but may also affect the subsequent assembly and sealing of the cover plate and battery casing, thereby causing safety hazards such as battery leakage and short circuits, and reducing the pass rate of battery products.

[0003] Therefore, it is necessary to provide a new battery cover flange positioning device to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a battery cover flange positioning device.

[0005] The battery cover flange positioning device provided by this utility model includes: a base, a transmission box fixedly connected to the middle of the upper surface of the base, and a cover body provided on the top of the transmission box; a first positioning plate is slidably connected to both ends of the transmission box in the long axis direction via a slide rod, and a second positioning plate is slidably connected to both ends of the transmission box in the short axis direction via a slide rod; the first and second positioning plates are used to limit the horizontal position of the cover body; an adjustment component is installed inside the transmission box, which is used to adjust the position of the first and second positioning plates; a flange box is fixedly connected to the opposite sides of the two second positioning plates via a connecting block, and a flange assembly is installed inside the flange box, which is used to limit the vertical position of the cover body and perform flange operation on the cover body.

[0006] Preferably, the adjusting assembly includes: a first bidirectional threaded rod, which is rotatably disposed in the middle of the transmission box, and its two ends are respectively threaded to two first positioning plates; a second bidirectional threaded rod is rotatably connected to the middle of the transmission box below the first bidirectional threaded rod, and its two ends are respectively threaded to two second positioning plates.

[0007] Preferably, a driving cone wheel is fixedly connected to the middle of the first bidirectional threaded rod, a driven cone wheel is fixedly connected to the middle of the second bidirectional threaded rod, and a transmission cone wheel is rotatably connected inside the transmission box, with the transmission cone wheel meshing with the driving cone wheel and the driven cone wheel.

[0008] Preferably, the flanging assembly includes: a pressure plate, which is slidably disposed on the side of the flanging box near the second positioning plate by two symmetrically arranged first sliders; a flanging plate is installed at the bottom of the pressure plate; the flanging plate is slidably connected to the flanging box by three second sliders; and multiple sets of springs are equidistantly arranged between the pressure plate and the flanging plate, with the two ends of the springs being fixedly connected to the pressure plate and the flanging plate respectively.

[0009] Preferably, an electric push rod is fixedly connected to the middle of the flange box, and the output end of the electric push rod is fixedly connected to the upper surface of the middle second slider among the three second sliders.

[0010] Preferably, the top of the second positioning plate is fixedly connected to multiple sets of baffles, and the bottom surface of the pressure plate is provided with a groove that cooperates with the baffles.

[0011] Preferably, a drive box is fixedly connected to the top of the base, and a motor is fixedly connected inside the drive box. The output end of the motor is fixedly connected to the first bidirectional threaded rod.

[0012] Compared with related technologies, the battery cover flange positioning device provided by this utility model has the following advantages: I. Improve the versatility of the device and adapt it to the processing of battery cover plates of various specifications. To address the shortcomings of existing devices that are "integrated designs and only compatible with cover plates of specific sizes," this invention achieves flexible adaptation of positioning dimensions through an adjustment structure consisting of a "motor + bidirectional threaded rod + conical wheel drive." The drive box at the top of the base has a built-in motor. The motor output directly drives the first bidirectional threaded rod to rotate. At the same time, through the meshing transmission of "active cone wheel - transmission cone wheel - driven cone wheel", it synchronously drives the second bidirectional threaded rod to rotate. The first bidirectional threaded rod and the second bidirectional threaded rod are threadedly connected to the first positioning plate and the second positioning plate, respectively. The positioning plate is restricted from rotation by the slide rod and can only be translated along the axial direction of the transmission box. The positioning plates can be flexibly adjusted by the forward and reverse rotation of the motor to drive them to slide towards each other or away from each other. This design can not only adapt to cover plate products with the same aspect ratio but different specific dimensions, but also eliminates the need to replace the entire set of tooling, significantly reducing the company's equipment investment costs, while reducing equipment changeover time and improving mass production efficiency. 2. Enhance the stability of the cover plate and prevent it from tilting or shifting during the flanging process. To address the drawback of existing devices where the cover plate easily lifts due to pressure during flange flipping, this invention utilizes a composite fixing structure of "pressure plate + spring + baffle" to achieve dual stability constraint of the cover plate in both the vertical and horizontal directions. The baffle at the top of the second positioning plate fits against the short axis side edge of the cover plate, initially limiting the lateral displacement of the cover plate; the bottom surface of the pressure plate has a groove that matches the baffle, which can wrap around the baffle and fit tightly against the upper surface of the cover plate when it moves down, and together with the lower support at the top of the transmission box, it forms a vertical fixing effect of "upper pressure and lower support". Multiple springs between the flange plate and the pressure plate, when the electric push rod drives the flange plate to move down, first drive the pressure plate to press down and fix the cover plate synchronously through the elastic force. After the pressure plate is in contact with the cover plate, the spring can maintain the pressure of the pressure plate on the cover plate through continuous elastic force. Even if the flange plate continues to move down and press the edge of the cover plate, it can prevent the cover plate from lifting up locally. This design effectively eliminates the problem of cover plate misalignment during the flanging process, ensures consistent flanging height and wrinkle-free edges, significantly improves the flanging forming accuracy of the cover plate, reduces the sealing risks in subsequent battery assembly, and improves the battery product qualification rate. Attached Figure Description Figure 1 This is a schematic diagram of the battery cover flange positioning device provided by this utility model. Figure 2 for Figure 1 The diagram shows the structure of the second positioning plate. Figure 3 for Figure 2 The diagram shows the structure of part A. Figure 4 for Figure 2 One of the schematic diagrams of the cross-sectional structure of the transmission box shown; Figure 5 for Figure 4 The second schematic diagram of the cross-sectional structure of the transmission box shown; Figure 6 for Figure 5 A schematic diagram of the structure at the intersection of the first and second bidirectional threaded rods is shown. Figure 7 for Figure 1 A schematic diagram of the cross-sectional structure of the flanged box shown; Figure 8 for Figure 7 The diagram shows the structure of the pressure plate. Figure 9 for Figure 1 The diagram shows the structure of the cover plate body.

[0013] The following are the labels in the diagram: 1. Base; 2. Transmission box; 3. Cover plate body; 4. Slide rod; 5. First positioning plate; 6. Second positioning plate; 7. Flanged box; 8. First bidirectional threaded rod; 9. Second bidirectional threaded rod; 10. Driving cone wheel; 11. Driven cone wheel; 12. Transmission cone wheel; 13. Pressure plate; 14. First slider; 15. Flanged plate; 16. Second slider; 17. Spring; 18. Electric push rod; 19. Baffle; 20. Groove; 21. Drive box; 22. Motor. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0015] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0016] Please see Figures 1 to 9A battery cover flange positioning device is disclosed, comprising: a base 1, a transmission box 2 fixedly connected to the middle of the upper surface of the base 1, and a cover body 3 provided on the top of the transmission box 2; a first positioning plate 5 slidably connected to both ends of the transmission box 2 in the long axis direction via a slide rod 4, and a second positioning plate 6 slidably connected to both ends of the transmission box 2 in the short axis direction via a slide rod 4; the first positioning plate 5 and the second positioning plate 6 are used to limit the horizontal position of the cover body 3; an adjustment component is installed inside the transmission box 2 to adjust the position of the first positioning plate 5 and the second positioning plate 6; a flange box 7 is fixedly connected to the opposite sides of the two second positioning plates 6 via a connecting block, and a flange assembly is installed inside the flange box 7 to limit the vertical position of the cover body 3 and to perform a flange operation on the cover body 3. The adjustment assembly includes: a first bidirectional threaded rod 8, rotatably mounted in the middle of the transmission box 2, with both ends of the first bidirectional threaded rod 8 threadedly connected to two first positioning plates 5 respectively; a second bidirectional threaded rod 9, rotatably connected to the middle of the transmission box 2 below the first bidirectional threaded rod 8, with both ends of the second bidirectional threaded rod 9 threadedly connected to two second positioning plates 6 respectively. A driving conical wheel 10 is fixedly connected to the middle of the first bidirectional threaded rod 8, and a driven conical wheel 11 is fixedly connected to the middle of the second bidirectional threaded rod 9. A transmission conical wheel 12 is rotatably connected inside the transmission box 2, meshing with the driving conical wheel 10 and the driven conical wheel 11. A drive box 21 is fixedly connected to the top of the base 1, and a motor 22 is fixedly connected inside the drive box 21, with the output end of the motor 22 fixedly connected to the first bidirectional threaded rod 8.

[0017] It should be noted that the slide bar 4 restricts the rotation of the first positioning plate 5 and the second positioning plate 6, and only allows them to translate along the short axis of the transmission box 2. In conjunction with the rotation of the first bidirectional threaded rod 8 and the second bidirectional threaded rod 9, the adjustment of the first positioning plate 5 and the second positioning plate 6 can be achieved.

[0018] Please see Figure 1 , Figure 7 , Figure 8 The flanging assembly includes: a pressure plate 13, which is slidably disposed on the side of the flanging box 7 near the second positioning plate 6 via two symmetrically arranged first sliders 14; a flanging plate 15 is mounted on the bottom of the pressure plate 13, and the flanging plate 15 is slidably connected to the flanging box 7 via three second sliders 16; multiple sets of springs 17 are equidistantly arranged between the pressure plate 13 and the flanging plate 15, and the two ends of the springs 17 are fixedly connected to the pressure plate 13 and the flanging plate 15 respectively; an electric push rod 18 is fixedly connected to the middle of the flanging box 7, and the output end of the electric push rod 18 is fixedly connected to the upper surface of the middle second slider 16 among the three second sliders 16; multiple sets of baffles 19 are fixedly connected to the top of the second positioning plate 6, and a groove 20 that mates with the baffle 19 is opened on the bottom surface of the pressure plate 13.

[0019] It should be noted that the first slider 14 restricts the rotation of the pressure plate 13 and only allows it to move in the vertical direction along the flange box 7; The electric push rod 18 drives the second slider 16, which is fixedly connected to it, to move downward, thereby causing the flange plate 15 to move downward. The flange plate 15 drives the pressure plate 13 to move downward through the spring 17 until the pressure plate 13 and the second positioning plate 6 press the cover plate body 3 together. The electric push rod 18 continues to drive the flange plate 15 to move downward. The pressure plate 13 cannot move downward, and the spring 17 is stretched. Under the tension of the spring 17, the pressure plate 13 presses tightly against the edge of the cover plate body 3 to prevent the edge of the cover plate from warping and deforming during the flange process.

[0020] The working principle of the battery cover flange positioning device provided by this utility model is as follows: 1. Positioning Adjustment: Adapting to the cover plate size (horizontal position calibration driven by motor 22) Before starting the device, the positions of the first positioning plate 5 and the second positioning plate 6 need to be adjusted according to the specifications and dimensions of the cover plate body 3 to be processed, through the power transmission path of "drive box 21 - motor 22 - adjustment assembly", to ensure that they match the horizontal contour of the cover plate body 3. A drive box 21 is fixedly connected to the top of the base 1. A motor 22 is fixedly connected inside the drive box 21. After the motor 22 is started, the output end of the motor 22 drives the first bidirectional threaded rod 8 fixedly connected to it to rotate. The first bidirectional threaded rod 8 is rotatably located in the middle of the long axis of the transmission box 2 and rotates synchronously with the output end of the motor 22. The first bidirectional threaded rod 8 is fixedly connected to the middle of the driving cone wheel 10. Therefore, when the first bidirectional threaded rod 8 rotates, it will synchronously drive the driving cone wheel 10 to rotate. The transmission box 2 is rotatably connected to the transmission cone wheel 12, and the transmission cone wheel 12 meshes with the driving cone wheel 10 and the driven cone wheel 11 at the same time. Therefore, the rotation of the driving cone wheel 10 will drive the transmission cone wheel 12 to rotate, and then the transmission cone wheel 12 will drive the driven cone wheel 11 to rotate in the opposite direction. Driven cone wheel 11 is fixedly connected to the middle of the second bidirectional threaded rod 9. The second bidirectional threaded rod 9 is rotatably disposed in the middle of the transmission box 2 and located below the first bidirectional threaded rod 8. Therefore, when driven cone wheel 11 rotates, it will synchronously drive the second bidirectional threaded rod 9 to rotate at the installation position in the short axis direction of the transmission box 2. The two ends of the first bidirectional threaded rod 8 are respectively threaded to the two first positioning plates 5, and the first positioning plates 5 are slidably connected to the transmission box 2 through the slide rod 4 (the slide rod 4 restricts the rotation of the first positioning plates 5 and only allows them to translate along the long axis of the transmission box 2). Therefore, the rotation of the first bidirectional threaded rod 8 will drive the two first positioning plates 5 to slide towards or away from each other along the slide rod 4 until the distance between the two first positioning plates 5 is consistent with the long axis dimension of the cover plate body 3. The two ends of the second bidirectional threaded rod 9 are respectively threaded to the two second positioning plates 6, and the second positioning plates 6 are slidably connected to the transmission box 2 through the slide rod 4 (the slide rod 4 restricts the rotation of the second positioning plates 6 and only allows them to translate along the short axis of the transmission box 2). Therefore, the rotation of the second bidirectional threaded rod 9 will drive the two second positioning plates 6 to slide towards or away from each other along the slide rod 4 until the distance between the two second positioning plates 6 is consistent with the short axis dimension of the cover plate body 3. After adjustment, the first positioning plate 5 (along the long axis of the transmission box 2) and the second positioning plate 6 (along the short axis of the transmission box 2) form a closed horizontal limiting space, laying the foundation for the subsequent horizontal positioning of the cover plate body 3.

[0021] II. Cover Plate Placement: Preliminary Positioning and Horizontal Constraints Place the cover plate body 3 to be processed stably on the top end face of the transmission box 2. At this time: The top of the second positioning plate 6 is fixedly connected to a baffle 19, which will fit against the short axis side edge of the cover plate body 3. The physical blocking of the baffle 19 will achieve the initial positioning of the cover plate body 3 and prevent the cover plate body 3 from shifting laterally on the top of the transmission box 2. The long axis edge of the cover plate body 3 is attached to the inner wall of the two first positioning plates 5, and the short axis edge is attached to the inner wall of the two second positioning plates 6. The first positioning plates 5 and the second positioning plates 6 together form a horizontal limiting structure, which completely restricts the horizontal displacement of the cover plate body 3. III. Flanging Operation: Vertical Fixing and Edge Shaping After horizontal positioning is completed, the cover plate body 3 is vertically fixed and its edges are flanged using the flange assembly. The specific process is as follows: The two second positioning plates 6 are fixedly connected to the flange box 7 on opposite sides by connecting blocks. When the electric push rod 18 fixedly installed in the middle of the flange box 7 is activated, the output end of the electric push rod 18 extends downward, driving the "second slider 16 in the middle of the three second sliders 16" fixedly connected to it to slide downward along the vertical slide rail of the flange box 7. All three second sliders 16 are fixedly connected to the flange plate 15. Therefore, the downward movement of the middle second slider 16 will synchronously drive the flange plate 15 to move downward along the vertical direction of the flange box 7. Multiple sets of springs 17 are equidistantly arranged between the flange plate 15 and the pressure plate 13. The two ends of the springs 17 are fixedly connected to the flange plate 15 and the pressure plate 13 respectively. Therefore, when the flange plate 15 moves down, the spring force of the springs 17 will drive the pressure plate 13 to move down synchronously. At the same time, the pressure plate 13 is slidably connected to the flange box 7 through two symmetrically arranged first sliders 14 (the first sliders 14 restrict the rotation of the pressure plate 13 and only allow it to move horizontally along the vertical direction of the flange box 7), ensuring that the downward movement of the pressure plate 13 is smooth. During the downward movement of the pressure plate 13, the groove 20 on its bottom surface will precisely match the baffle 19 on the top of the second positioning plate 6 (the groove 20 wraps around the outside of the baffle 19) until the bottom surface of the pressure plate 13 is tightly attached to the upper surface of the cover plate body 3; at this time, the top of the transmission box 2 provides lower support for the cover plate body 3, and the pressure plate 13 and the second positioning plate 6 together apply vertical squeezing force to the cover plate body 3, completely restricting the vertical displacement of the cover plate body 3 and preventing the cover plate from lifting up when it is flipped later; As the electric push rod 18 continues to extend downward, since the cover plate body 3 is fixed by the pressure plate 13 (the pressure plate 13 cannot move further downward), the flange plate 15 will overcome the elastic force of the spring 17 and continue to move downward, and the spring 17 will gradually stretch; the bottom of the flange plate 15 contacts the edge to be flanged of the cover plate body 3 and applies a downward squeezing force to the edge, causing the edge of the cover plate body 3 to undergo plastic deformation along the forming surface of the flange plate 15, thus completing the flange forming; During the flanging process, the spring 17 is always in a stretched state. Its elasticity ensures that the vertical pressure of the pressure plate 13 on the cover plate body 3 is continuous, effectively preventing the cover plate body 3 from locally lifting or shifting due to the flanging extrusion force, and ensuring the flanging accuracy. IV. Reset and Retrieval: Device Reset and Finished Product Retrieval After the flanging process is completed, the device is reset by reversing the motor 22 and retracting the electric push rod 18. The specific steps are as follows: The output end of the electric push rod 18 inside the control flange box 7 retracts upward, driving the second slider 16 and the flange plate 15 in the middle to move upward synchronously; when the flange plate 15 moves upward, the compression state of the spring 17 is gradually released, and the pressure plate 13 is driven to move upward synchronously through the restoring force of the spring 17 until the pressure plate 13 separates from the upper surface of the cover plate body 3. The motor 22 inside the control drive box 21 reverses, and the output end of the motor 22 drives the first bidirectional threaded rod 8 to rotate in the opposite direction. Then, through the meshing transmission of "driving cone wheel 10 - transmission cone wheel 12 - driven cone wheel 11", it drives the second bidirectional threaded rod 9 to rotate in the opposite direction. When the first bidirectional threaded rod 8 rotates in the opposite direction, it causes the two first positioning plates 5 to slide in opposite directions along the slide rod 4; when the second bidirectional threaded rod 9 rotates in the opposite direction, it causes the two second positioning plates 6 to slide in opposite directions along the slide rod 4, thus releasing the horizontal limit on the cover plate body 3. The operator removes the flanged cover plate body 3 from the top of the transmission box 2, completing a single flanging process; then the above steps of "positioning adjustment - cover plate fixing - flanging - resetting and taking out" can be repeated to perform the flanging operation of the next cover plate body 3.

[0022] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A device for positioning and flanging the edge of a battery cover, characterized in that, include: A base (1) is fixedly connected to a transmission box (2) at the middle of the upper surface of the base (1). A cover plate body (3) is provided on the top of the transmission box (2). Both ends of the transmission box (2) in the long axis direction are slidably connected to a first positioning plate (5) via a slide rod (4). Both ends of the transmission box (2) in the short axis direction are slidably connected to a second positioning plate (6) via a slide rod (4). The first positioning plate (5) and the second positioning plate (6) are used to limit the horizontal position of the cover plate body (3). An adjustment component is installed inside the transmission box (2). The adjustment component is used to adjust the position of the first positioning plate (5) and the second positioning plate (6). A flange box (7) is fixedly connected to the opposite side of the two second positioning plates (6) via a connecting block. A flange component is installed inside the flange box (7). The flange component is used to limit the vertical position of the cover plate body (3) and to perform flange operation on the cover plate body (3).

2. The battery cover flange positioning device according to claim 1, characterized in that, The adjustment assembly includes: a first bidirectional threaded rod (8), which is rotatably disposed in the middle of the transmission box (2), and the two ends of the first bidirectional threaded rod (8) are respectively threaded to the two first positioning plates (5); a second bidirectional threaded rod (9) is rotatably connected to the middle of the transmission box (2) below the first bidirectional threaded rod (8), and the two ends of the second bidirectional threaded rod (9) are respectively threaded to the two second positioning plates (6).

3. The battery cover flange positioning device according to claim 2, characterized in that, The first bidirectional threaded rod (8) is fixedly connected to the middle of the driving cone wheel (10), the second bidirectional threaded rod (9) is fixedly connected to the middle of the driven cone wheel (11), and the transmission box (2) is rotatably connected to the transmission cone wheel (12). The transmission cone wheel (12) meshes with the driving cone wheel (10) and the driven cone wheel (11).

4. The battery cover flange positioning device according to claim 1, characterized in that, The flange assembly includes: a pressure plate (13), which is slidably disposed on the side of the flange box (7) near the second positioning plate (6) by two symmetrically arranged first sliders (14). A flange plate (15) is installed at the bottom of the pressure plate (13). The flange plate (15) is slidably connected to the flange box (7) by three second sliders (16). Multiple sets of springs (17) are equidistantly arranged between the pressure plate (13) and the flange plate (15). The two ends of the springs (17) are fixedly connected to the pressure plate (13) and the flange plate (15) respectively.

5. The battery cover flange positioning device according to claim 4, characterized in that, An electric push rod (18) is fixedly connected to the middle of the flange box (7). The output end of the electric push rod (18) is fixedly connected to the upper surface of the middle second slider (16) among the three second sliders (16).

6. The battery cover flange positioning device according to claim 4, characterized in that, The top of the second positioning plate (6) is fixedly connected to multiple sets of baffles (19), and the bottom surface of the pressure plate (13) is provided with a groove (20) that cooperates with the baffles (19).

7. The battery cover flange positioning device according to claim 3, characterized in that, A drive box (21) is fixedly connected to the top of the base (1), and a motor (22) is fixedly connected inside the drive box (21). The output end of the motor (22) is fixedly connected to the first bidirectional threaded rod (8).

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