A tablet pressing device for lithium battery production and manufacturing

Abstract

The utility model discloses a kind of tabletting device for lithium battery production and manufacture, including frame, stable down-pressing mechanism, module clamping mechanism and compacting mechanism, the stable down-pressing mechanism includes down-pressing frame and threaded block, the module clamping mechanism includes support pipe and clamping rod, the compacting mechanism includes threaded ring and elastic top pin, stable down-pressing mechanism ensures the uniformity and stability of down-pressing force in tableting process, thereby avoid the problem of uneven pressing of material due to inaccurate die position, by the sliding guide setting of guide rod and guide plate, further enhance the stability of down-pressing frame, ensure the high-precision operation of pressing process, realize the quick, accurate installation and replacement of die and bottom die, by the cooperation design of support pipe and clamping rod, the rotation of clamping pipe extends into wall attachment block and realizes the stable clamping of mold by the combination of compression spring and positioning groove, ensure the fixation and stability of mold in pressing process.

Description

Technical Field

[0001] This utility model relates to the field of tablet pressing technology, and more specifically, to a tablet pressing device for lithium battery manufacturing. Background Technology

[0002] Under current technological conditions, the tablet pressing equipment used in lithium battery manufacturing still has many shortcomings in practical applications, especially in the instability of the tablet pressing process and the inconvenience of installing or replacing the pressing mold and the bottom mold.

[0003] Firstly, during the tableting process, limitations in equipment structure design or control precision often lead to problems such as uneven pressure, misalignment, and mold misalignment, resulting in unsatisfactory tableting effects. This unstable compression state not only affects the thickness uniformity and density of lithium battery sheets but may also cause defects such as material deformation and cracks, thereby affecting the overall performance and lifespan of the battery. Especially in high-speed automated production, the instability of the compression process directly limits product consistency and production yield.

[0004] Secondly, the installation or replacement of the compression mold and bottom mold is usually cumbersome, involving complex operations, long processing times, and low positioning accuracy. Existing devices mostly use bolt fixing or manual adjustment to replace the molds, which not only increases the labor intensity of workers but also extends equipment downtime and reduces production efficiency. Furthermore, in scenarios involving switching between multiple battery models or frequent mold replacements due to wear and tear, the existing structure cannot meet the production requirements for rapid replacement and precise positioning, thus limiting the flexibility and adaptability of the equipment. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides a pressing device for lithium battery manufacturing, so as to solve the technical problems mentioned in the background art, such as instability during the pressing process and inconvenience in installing or replacing the pressing mold and the bottom mold.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a pressing device for lithium battery manufacturing, comprising a frame, a stabilizing pressing mechanism, a module clamping mechanism, and a pressing mechanism. The stabilizing pressing mechanism includes a pressing frame and a threaded block. The pressing frame is fixed to the frame and has a lead screw. The threaded block is located on the lead screw. A guide rod is fixed to the pressing frame, and a guide plate is located at the bottom of the pressing frame. The guide rod is slidably connected to the guide plate. The module clamping mechanism includes a support tube and a clamping rod. One end of the support tube has a clamping tube, and the clamping rod has a wall-adhering block. A counter-compression spring is symmetrically arranged on the wall-adhering block. An inner rotating frame is provided on the clamping tube, and a positioning groove is provided on the inner rotating frame. The inner rotating frame extends into the wall-adhering block, and the counter-compression spring extends into the positioning groove, so that the clamping rod and the clamping tube are relatively fixed. A top-load ring is provided at the bottom end of the clamping tube, and the lead screw is connected to a drive motor.

[0009] The present invention is further configured such that the clamping mechanism includes a threaded ring and a plurality of spring-loaded pins, the threaded ring is screwed to the retaining tube, the retaining tube is slidably connected to the directional ring, the threaded ring is used to push the directional ring to move longitudinally, the plurality of spring-loaded pins are provided on the directional ring, the bottom of the receiving ring is provided with a spring-loaded groove, the spring-loaded pins extend into the spring-loaded groove, so that the receiving ring stably drives the retaining tube to rotate, the directional ring moves further, so that the spring-loaded pins are fixedly embedded in the spring-loaded groove, so that the receiving ring is fixed on the support tube.

[0010] The present invention is further configured such that a base plate is provided at the bottom of the frame, and a mounting plate is provided at the top of the base plate. The bottom mold is placed on the mounting plate. The base plate provides a solid foundation for the device, which can withstand the load of each component and ensure the overall stability of the device.

[0011] The present invention is further configured such that a side plate is provided on the periphery of the mounting plate, the support tube is fixedly connected to the bottom of the base plate, and one end of the snap-fit ​​rod passes through the side plate to snap-fit ​​the support tube. The side plate enhances the structural stability of the device and, through its cooperation with the support tube, ensures the stability of the snap-fit ​​rod and its stability during operation.

[0012] The present invention is further configured such that one end of the guide rod is provided with a lower pressure frame, and the pressure mold is provided at the bottom of the lower pressure frame.

[0013] The present invention is further provided that the side wall of the support tube is provided with a connecting plate, the connecting plate being connected to the bottom of the base plate and the top of the lower pressure frame respectively. The connection plate facilitates the stable installation of the support tube.

[0014] The present invention is further configured such that a limiting block is provided at one end of the snap-fit ​​rod, and the limiting block abuts against the mounting plate.

[0015] The present invention is further configured such that the support tube is provided with an inner retaining ring, and the snap-fit ​​rod is provided with a push-out spring. The push-out spring abuts against the inner retaining ring, and the push-out spring provides necessary elastic support, avoiding excessive friction between the snap-fit ​​rod and the inner retaining ring, thus ensuring smooth operation of the equipment.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a pressing device for lithium battery manufacturing, which has the following advantages:

[0018] This invention features a stable pressing mechanism, including a pressing frame, a lead screw, and a threaded block working together to ensure uniform and stable pressing pressure during the pressing process. This avoids uneven material pressing caused by inaccurate die positioning. The sliding guide mechanism between the guide rod and the guide plate further enhances the stability of the pressing frame, ensuring high-precision operation during the pressing process. It reduces potential errors caused by unstable equipment structure, improves repeatability and consistency during the pressing process, effectively prevents material deformation and cracking, and improves the quality of lithium battery sheets.

[0019] This utility model features a modular snap-fit ​​mechanism that enables quick and accurate installation and replacement of the pressure mold and the bottom mold. Through the coordinated design of the support tube and the snap-fit ​​rod, the snap-fit ​​tube rotates into the wall block and securely snaps the mold together with the compression spring and the positioning groove, ensuring the mold's fixation and stability during the pressing process. In addition, the design of the top ring and spring pin at the bottom of the outer wall of the snap-fit ​​tube allows the module to stably drive the pressure mold and the bottom mold to rotate, improving the device's working efficiency and convenience, and reducing the frequency of manual adjustment operations.

[0020] This invention features a clamping mechanism that provides a stable and adjustable clamping force through the cooperation of a threaded ring, a directional ring, and a spring-loaded pin. The rotation of the threaded ring drives the directional ring to move longitudinally, which in turn drives the top ring to rotate, making the clamping process more stable and avoiding poor pressing due to uneven force or improper adjustment, thus ensuring the consistency of battery sheet quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0022] Figure 2 This is a schematic diagram of the stabilizing downward pressing mechanism in this utility model;

[0023] Figure 3 This is a schematic diagram of the overall structure of the device from the bottom view of this utility model;

[0024] Figure 4 This is a schematic diagram of the module latching mechanism and the clamping mechanism in this utility model;

[0025] Figure 5 This is a schematic diagram of the internal structure of the module locking mechanism and the clamping mechanism in this utility model.

[0026] In the diagram: 1. Frame; 2. Lower pressure frame; 3. Threaded block; 4. Lead screw; 5. Guide rod; 6. Guide plate; 7. Support tube; 8. Snap-fit ​​rod; 9. Snap-fit ​​tube; 10. Compression spring; 11. Inner rotating frame; 12. Positioning groove; 13. Top ring; 14. Threaded ring; 15. Spring-loaded pin; 16. Orienting ring; 17. Spring-loaded groove; 18. Base plate; 19. Mounting plate; 20. Side plate; 21. Lower pressure frame; 22. Connecting plate; 23. Restriction block; 24. Inner retaining ring; 25. Push-out spring; 101. Wall-attaching block. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5 A pressing device for lithium battery manufacturing includes a frame 1, a stabilizing pressing mechanism, a module clamping mechanism, and a pressing mechanism. The stabilizing pressing mechanism includes a pressing frame 2 and a threaded block 3. The pressing frame 2 is fixed on the frame 1 and has a lead screw 4. The threaded block 3 is located on the lead screw 4. A guide rod 5 is fixed on the pressing frame 2 and a guide plate 6 is located at the bottom of the pressing frame 2. The guide rod 5 is slidably connected to the guide plate 6. The module clamping mechanism includes a support tube 7 and a clamping rod 8. One end of the support tube 7 is provided with a clamping tube 9. The clamping rod 8 is provided with a wall-adhering block 101. A counter-compression spring 10 is symmetrically provided on the wall-adhering block 101. The clamping tube 9 is provided with an inner rotating frame 11 and a positioning groove 12. The inner rotating frame 11 can be rotatably extended into the wall-adhering block 101. The counter-compression spring 10 can be extended into the positioning groove 12 to fix the clamping rod 8 and the clamping tube 9 relatively. The bottom of the clamping tube 9 is provided with a top ring 13.

[0031] In this embodiment, the stabilizing pressing mechanism mainly achieves precise pressing of lithium batteries. During operation, the screw 4 is rotated, driving the threaded block 3 to move up and down. The guide rod 5 on the pressing frame 2 cooperates with the guide plate 6 to provide sliding guidance, ensuring vertical stability during the pressing process. When the screw 4 rotates, the threaded block 3 drives the pressing frame 21 and the pressing mold mounted on it to move downward, uniformly pressing the lithium battery material. Stable pressure is provided through the screw drive, and the guide structure ensures the accuracy of the pressing direction. The module snap-fit ​​mechanism is used for quick installation and disassembly of the pressing mold and the bottom mold. During operation, the snap-fit ​​rod 8 is inserted into the support tube 7 through the side plate 20. The wall-adhering block 101 and the pressure spring 10 on the outer wall of the snap-fit ​​rod 8 enter the snap-fit ​​tube 9. The inner rotating frame 11 inside the snap-fit ​​tube 9 is rotated, so that the inner rotating frame 11 extends into the wall-adhering block 101. At the same time, the pressure spring 10 extends into the positioning groove 12 on the inner rotating frame 11, thereby achieving relative fixation of the snap-fit ​​rod 8 and the snap-fit ​​tube 9. This makes mold replacement simple and efficient, greatly reducing production preparation time.

[0032] The clamping mechanism includes a threaded ring 14 and several spring pins 15. The threaded ring 14 is screwed to a retaining tube 9, which is slidably connected to a directional ring 16. The rotation of the threaded ring 14 is used to push the directional ring 16 to move longitudinally. Several spring pins 15 are provided on the directional ring 16. The bottom of the receiving ring 13 is provided with a spring groove 17. The spring pins 15 extend into the spring groove 17 in stages, so that the receiving ring 13 stably drives the retaining tube 9 to rotate. The directional ring 16 moves further, so that the spring pins 15 are fixedly embedded in the spring groove 17, and the receiving ring 13 is fixed on the support tube 7.

[0033] The clamping mechanism ensures the reliability of the snap-fit ​​connection. After the module is installed, the threaded ring 14 is rotated, and the threaded ring 14 pushes the directional ring 16 to move longitudinally along the snap-fit ​​tube 9. Multiple sets of spring-loaded pins 15 installed on the directional ring 16 extend into the spring-loaded groove 17 at the bottom of the receiving ring 13 in stages, initially enabling the receiving ring 13 to stably drive the snap-fit ​​tube 9 to rotate. As the directional ring 16 moves further, the spring-loaded pins 15 are completely embedded in the spring-loaded groove 17, fixing the receiving ring 13 on the support tube 7 and preventing loosening during operation.

[0034] Please see Figures 1-5As a supplementary embodiment of a lithium battery manufacturing pressing device for stabilizing the pressing mechanism, module clamping mechanism, and pressing mechanism: The bottom of the frame 1 is provided with a base plate 18, the top of the base plate 18 is provided with a mounting plate 19, the bottom mold is provided on the mounting plate 19, the periphery of the mounting plate 19 is provided with side plates 20, the support tube 7 is fixedly connected to the bottom of the base plate 18, one end of the clamping rod 8 passes through the side plate 20 and clamps the support tube 7, one end of the guide rod 5 is provided with a pressing frame 21, the pressing mold is provided at the bottom of the pressing frame 21, the side wall of the support tube 7 is provided with a connecting plate 22, the connecting plate 22 is connected to the bottom of the base plate 18 and the top of the pressing frame 21 respectively, one end of the clamping rod 8 is provided with a limiting block 23, the limiting block 23 abuts against the mounting plate 19, the support tube 7 is provided with an inner retaining ring 24, the clamping rod 8 is provided with a push-out spring 25, the push-out spring 25 abuts against the inner retaining ring 24.

[0035] More specifically, firstly, the bottom mold is installed on the mounting plate 19 via a module snap-fit ​​mechanism, and the pressing mold is also installed at the bottom of the lower pressing frame 21 via the same module snap-fit ​​mechanism. During installation, the snap-fit ​​rod 8 passes through the side plate 20 and engages with the support tube 7. The inner rotating frame 11 is rotated to achieve initial fixation. Then, the threaded ring 14 is rotated through the pressing mechanism to make the spring pin 15 embed into the spring groove 17, thus completing reliable fixation. Next, the lithium battery material is placed on the bottom mold, and the screw 4 is rotated to make the lower pressing frame 21 move the pressing mold downward. Under the guidance of the guide rod 5 and the guide plate 6, the pressing mold is precisely aligned with the bottom mold to uniformly press the lithium battery material. After pressing, the screw 4 is rotated in the opposite direction to lift the lower pressing frame 21 and the pressing mold, and the pressed lithium battery material is removed. In addition, the device is also designed with a limiting block 23 to prevent the snap-fit ​​rod 8 from being over-inserted, and an easy-to-disassemble ejection spring 25 structure to make the operation safer and more reliable.

[0036] In summary, during the use or operation of the overall equipment: when the stable pressing mechanism is required to operate, the stable pressing mechanism mainly achieves precise pressing of lithium batteries. During operation, by rotating the lead screw 4, the threaded block 3 is driven to move up and down. The guide rod 5 on the pressing frame 2 cooperates with the guide plate 6 to provide a sliding guide function, ensuring vertical stability during the pressing process. When the lead screw 4 rotates, the threaded block 3 drives the pressing frame 21 and the pressing die installed on it to move downward, uniformly pressing the lithium battery material. Stable pressure is provided through the screw drive, and the guide structure ensures the accuracy of the pressing direction.

[0037] When the modular snap-fit ​​mechanism is in operation, it is used to quickly install and disassemble the pressure mold and the bottom mold. During operation, the snap-fit ​​rod 8 is inserted into the support tube 7 through the side plate 20. The wall-adhering block 101 and the pressure spring 10 on the outer wall of the snap-fit ​​rod 8 enter the snap-fit ​​tube 9. The inner rotating frame 11 inside the snap-fit ​​tube 9 is rotated so that the inner rotating frame 11 extends into the wall-adhering block 101. At the same time, the pressure spring 10 extends into the positioning groove 12 on the inner rotating frame 11, thereby achieving relative fixation between the snap-fit ​​rod 8 and the snap-fit ​​tube 9. This makes mold replacement simple and efficient, and greatly reduces production preparation time.

[0038] When the clamping mechanism is in operation, it ensures the reliability of the snap-fit ​​connection. After the module is installed, the threaded ring 14 is rotated, and the threaded ring 14 pushes the directional ring 16 to move longitudinally along the snap-fit ​​tube 9. Multiple sets of spring-loaded pins 15 installed on the directional ring 16 extend into the spring-loaded groove 17 at the bottom of the receiving ring 13 in stages, initially enabling the receiving ring 13 to stably drive the snap-fit ​​tube 9 to rotate. As the directional ring 16 moves further, the spring-loaded pins 15 are completely embedded in the spring-loaded groove 17, fixing the receiving ring 13 on the support tube 7 and preventing loosening during operation.

[0039] First, the bottom mold is installed on the mounting plate 19 via a module snap-fit ​​mechanism. The pressing mold is also installed at the bottom of the lower pressing frame 21 via the same module snap-fit ​​mechanism. During installation, the snap-fit ​​rod 8 passes through the side plate 20 and engages with the support tube 7. The inner rotating frame 11 is rotated to achieve initial fixation. Then, the threaded ring 14 is rotated through the pressing mechanism to make the spring pin 15 embed into the spring groove 17, thus completing reliable fixation. Next, the lithium battery material is placed on the bottom mold. The screw 4 is rotated to make the lower pressing frame 21 move the pressing mold downward. Under the guidance of the guide rod 5 and the guide plate 6, the pressing mold is precisely aligned with the bottom mold and the lithium battery material is pressed evenly. After pressing, the screw 4 is rotated in the opposite direction to lift the lower pressing frame 21 and the pressing mold, and the pressed lithium battery material is removed. In addition, the device is also designed with a limiting block 23 to prevent the snap-fit ​​rod 8 from being over-inserted, and an easy-to-disassemble ejection spring 25 structure, making the operation safer and more reliable.

[0040] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

[0041] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise explicitly described, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their specific circuit structures will not be elaborated here. In all the solutions mentioned above, those involving motors can be used with a reducer if necessary. The connection structure and working principle between the motor and the reducer are existing, well-known technologies, and will not be elaborated here.

Claims

1. A pressing device for lithium battery manufacturing, comprising a frame, a stabilizing pressing mechanism, a module clamping mechanism, and a clamping mechanism, characterized in that: The stabilizing pressing mechanism includes a pressing frame and a threaded block. The pressing frame is fixed to the frame and has a lead screw. The threaded block is located on the lead screw. A guide rod is fixed to the pressing frame, and a guide plate is located at the bottom of the pressing frame. The guide rod is slidably connected to the guide plate. The module locking mechanism includes a support tube and a locking rod. One end of the support tube has a locking tube, and the locking rod has a wall-adhering block. A counter-compression spring is symmetrically arranged on the wall-adhering block. An inner rotating frame is provided on the locking tube, and a positioning groove is provided on the inner rotating frame. The inner rotating frame extends into the wall-adhering block, and the counter-compression spring extends into the positioning groove. A top-supporting ring is provided at the bottom of the locking tube.

2. The pressing apparatus for lithium battery manufacturing according to claim 1, characterized in that: The clamping mechanism includes a threaded ring and a plurality of spring-loaded pins. The threaded ring is screwed onto the retaining tube, and the retaining tube is slidably connected to the directional ring. The threaded ring is used to push the directional ring to move longitudinally. A plurality of spring-loaded pins are provided on the directional ring. The bottom of the retaining ring is provided with a spring-loaded groove, and the spring-loaded pins extend into the spring-loaded groove.

3. The pressing apparatus for lithium battery manufacturing according to claim 1, characterized in that: The frame has a base plate at the bottom and a mounting plate at the top of the base plate, with the bottom mold placed on the mounting plate.

4. The pressing apparatus for lithium battery manufacturing according to claim 3, characterized in that: The mounting plate has a side plate around its periphery, the support tube is fixedly connected to the bottom of the base plate, and one end of the snap-fit ​​rod passes through the side plate to snap the support tube.

5. The pressing apparatus for lithium battery manufacturing according to claim 3, characterized in that: One end of the guide rod is provided with a lower pressure frame, and the pressure mold is located at the bottom of the lower pressure frame.

6. The pressing apparatus for lithium battery manufacturing according to claim 5, characterized in that: The side wall of the support tube is provided with a connecting plate, which is connected to the bottom of the base plate and the top of the lower pressure frame respectively.

7. The pressing apparatus for lithium battery manufacturing according to claim 3, characterized in that: One end of the latching rod is provided with a limiting block, which abuts against the mounting plate.

8. The pressing apparatus for lithium battery manufacturing according to claim 1, characterized in that: The support tube is provided with an inner retaining ring, and the snap-fit ​​rod is provided with a push-out spring, which abuts against the inner retaining ring.

Images