Automatic folding and cutting system for soft package aluminum plastic shell of solid-state lithium battery

Abstract

The invention discloses an automatic folding and cutting system for a soft package aluminum-plastic shell of a solid-state lithium battery. The problems that a traditional aluminum-plastic shell is low in folding and cutting machining efficiency, poor in precision and inconvenient to maintain are solved. The system comprises a machine frame, a folding mechanism, an edge folding mechanism, an edge cutting mechanism and a plurality of high-precision feeding modules, wherein the folding mechanism, the edge folding mechanism and the edge cutting mechanism are installed on the machine frame, and safety maintenance modules corresponding to cutter assemblies are further integrated. The folding mechanism is provided with a separated servo folding rotating shaft to achieve accurate folding, the edge cutting mechanism comprises a top cutter assembly, a side cutter assembly and a rear cutter assembly which are independent, and all the mechanisms are driven by a servo module to be matched. According to the system, full-process automatic high-precision machining of folding and cutting of the aluminum-plastic shell is achieved, the modular design of the cutter assembly is adaptive to multi-specification machining, the safety maintenance module can rapidly change cutters and improve the operation safety, the folded edges of the machined aluminum-plastic shell are neat, the section is smooth, the packaging airtightness and the appearance quality are effectively improved, and the production continuity and the product yield are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of lithium battery manufacturing equipment technology, specifically to an automatic folding and cutting system for soft-pack aluminum-plastic shells of solid-state lithium batteries. Background Technology

[0002] The aluminum-plastic shell of soft-pack lithium batteries uses aluminum-plastic composite film as raw material. The molding process requires key steps such as folding, edge bending, and edge cutting. Solid-state lithium batteries have much higher requirements for the airtightness and structural precision of the packaging than traditional soft-pack batteries. The processing quality of the aluminum-plastic shell directly determines the reliability of the battery packaging.

[0003] In existing technologies, the bending and cutting of aluminum-plastic shells mostly relies on manual labor or semi-automatic equipment. This not only results in low production efficiency but also leads to problems such as uneven folds, burrs on cuts, and poor dimensional consistency due to the randomness of manual operation and insufficient equipment precision. These issues severely affect the appearance and packaging performance of the aluminum-plastic shells, making them unsuitable for the high-standard production requirements of solid-state lithium batteries. Furthermore, the tool maintenance process of traditional equipment is cumbersome and unsafe, easily causing production line downtime and further reducing production efficiency. Therefore, developing a fully automated, high-precision, and easy-to-maintain automatic bending and cutting system for aluminum-plastic shells has become an urgent need in the industry to improve the production quality and efficiency of solid-state lithium batteries. Summary of the Invention

[0004] To overcome the shortcomings of existing technical solutions, this invention provides an automatic folding and cutting system for soft-pack aluminum-plastic shells of solid-state lithium batteries, which can effectively solve the problems mentioned in the background art.

[0005] The technical solution adopted by this invention to solve its technical problem is:

[0006] An automatic folding and cutting system for solid-state lithium battery soft-pack aluminum-plastic shells includes:

[0007] frame;

[0008] The folding mechanism is mounted on the frame and includes an aluminum-plastic film folding fixture, an aluminum-plastic film folding fixture module that drives the aluminum-plastic film folding fixture to move, a separate servo folding shaft, and a folding shaft module that drives the separate servo folding shaft to perform the folding action.

[0009] The folding mechanism is mounted on the frame, and the folding mechanism includes a folding knife module and a folding knife module bracket for fixing the folding knife module;

[0010] And a top cutter safety maintenance module, a side cutter safety maintenance module, and a rear cutter safety maintenance module respectively provided for the top cutter assembly, the side cutter assembly, and the rear cutter assembly.

[0011] As a further description of the above technical solution, in the folding mechanism, the aluminum-plastic film folding fixture is slidably connected to the frame, and the aluminum-plastic film folding fixture module drives the aluminum-plastic film folding fixture to move in the horizontal direction;

[0012] The separate servo folding shaft is located on one side of the aluminum-plastic film folding fixture and is driven to rotate by the folding shaft module to perform a folding operation on the aluminum-plastic film positioned on the aluminum-plastic film folding fixture.

[0013] As a further description of the above technical solution, the top cutter assembly is located above the frame, and the top cutter assembly feed module drives the top cutter assembly to move in the vertical direction;

[0014] The side cutter assembly is located on the side of the frame, and the side cutter assembly feed module drives the side cutter assembly to move horizontally.

[0015] The rear cutter assembly is located at the rear of the frame, and the rear cutter assembly feed module drives the rear cutter assembly to move horizontally and longitudinally.

[0016] As a further description of the above technical solution, the top cutter safety maintenance module, the side cutter safety maintenance module and the rear cutter safety maintenance module all include a tool locking mechanism and a quick-release interface, which are used to lock the position of the corresponding tool components in the maintenance state and realize quick disassembly and assembly.

[0017] As a further description of the above technical solution, the top cutter safety maintenance module is integrated between the top cutter assembly feed module and the top cutter assembly;

[0018] The side cutter safety maintenance module is integrated between the side cutter assembly feed module and the side cutter assembly;

[0019] The rear cutter safety maintenance module is integrated between the rear cutter assembly feed module and the rear cutter assembly.

[0020] As a further description of the above technical solution, the top cutter assembly feed module, the rear cutter assembly feed module, and the folding shaft module are all servo motor driven linear modules or rotary modules.

[0021] As a further description of the above technical solution, the folding knife module is fixed on the folding knife module bracket, and the folding knife module bracket is fixedly connected to the machine frame.

[0022] As a further description of the above technical solution, the side-cutting blade assembly feed module is a linear drive module that is hidden inside the frame, and its output end is connected to the side-cutting blade assembly for transmission.

[0023] As a further description of the above technical solution, the folding blade module includes at least one set of folding blades, and the cutting edge direction of the folding blades is parallel to the folding axis of the split servo folding shaft.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] The present invention provides an automatic folding and cutting system for soft-pack aluminum-plastic shells of solid-state lithium batteries, which has at least one of the following beneficial effects during use:

[0026] This system achieves fully automated, high-precision processing of the aluminum-plastic shell for solid-state lithium batteries. Servo modules drive the actions of each mechanism, and a controller coordinates the timing, eliminating the need for manual intervention and ensuring consistent processing and high product yield. The cutting assembly and feed module feature a modular, independent design, allowing for individual control and adaptability to different aluminum-plastic shell specifications, offering high flexibility.

[0027] The separate servo-driven folding axis enhances flipping accuracy and stability. The folding blade edge is parallel to the folding axis, ensuring neat folds and smooth, burr-free cuts, significantly improving the airtightness and appearance quality of the aluminum-plastic shell packaging. Each cutter is equipped with a safety maintenance module featuring a locking mechanism and quick-release interface, integrated between the cutter and feed module. This allows for rapid cutter disassembly and maintenance, improving maintenance efficiency and safety, reducing downtime, ensuring production continuity, and optimizing the equipment's structural layout to further enhance overall production efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the first overall structure of an automatic folding and cutting system for a soft-pack aluminum-plastic shell of a solid-state lithium battery according to the present invention;

[0029] Figure 2 This is a schematic diagram of the second overall structure of an automatic folding and cutting system for a soft-pack aluminum-plastic shell of a solid-state lithium battery according to the present invention.

[0030] Numbering on the map:

[0031] 1. Folding blade module bracket; 3. Top cutting blade assembly feed module; 4. Aluminum-plastic film folding fixture; 5. Aluminum-plastic film folding fixture module; 6. Separate servo folding shaft; 7. Frame; 8. Folding shaft module; 9. Rear cutting blade assembly feed module; 10. Rear cutting blade assembly; 11. Rear cutting blade safety maintenance module; 12. Side cutting blade safety maintenance module; 13. Side cutting blade assembly; 14. Top cutting blade safety maintenance module; 15. Folding blade module; 16. Top cutting blade assembly. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figure 1-2 As shown, the present invention provides an automatic folding and cutting system for solid-state lithium battery soft-pack aluminum-plastic shells, comprising:

[0034] Rack 7;

[0035] This embodiment uses a controller to coordinate the timing of the folding, edge-folding, and edge-cutting mechanisms, along with the precise drive of each high-precision feed module and the auxiliary protection of the safety maintenance module, to achieve fully automated integrated processing of aluminum-plastic film from positioning, folding, edge-folding to edge-cutting.

[0036] The folding mechanism is installed on the frame 7. The folding mechanism includes an aluminum-plastic film folding fixture 4, an aluminum-plastic film folding fixture module 5 that drives the aluminum-plastic film folding fixture 4 to move, a separate servo folding shaft 6, and a folding shaft module 8 that drives the separate servo folding shaft 6 to perform folding actions.

[0037] The aluminum-plastic film to be processed is placed on the aluminum-plastic film folding fixture 4 for precise positioning and fixation. The aluminum-plastic film folding fixture module 5 drives the folding fixture to slide horizontally, transferring the aluminum-plastic film to the preset processing station to prepare for the subsequent folding process.

[0038] The separate servo folding shaft 6, located on one side of the aluminum-plastic film folding fixture 4, completes precise rotation under the drive of the folding shaft module 8, performing standardized folding operations on the aluminum-plastic film positioned on the fixture; the folding shaft module 8 is a servo motor driven rotation module, which can precisely control the rotation angle and speed to ensure the consistency of the folding action.

[0039] The folding mechanism is mounted on the frame 7. The folding mechanism includes a folding knife module 15 and a folding knife module bracket 1 for fixing the folding knife module 15.

[0040] After the folding process is completed, the folding knife module 15 fixed on the folding knife module bracket 1 is activated to perform folding processing on the folded aluminum-plastic film. The folding knife module 15 includes at least one set of folding knives, whose cutting edge direction is parallel to the folding axis of the split servo folding shaft 6, to ensure that the folding trajectory matches the folding direction and achieve neat folding.

[0041] The edge-cutting mechanism is mounted on the frame 7. The edge-cutting mechanism includes a top cutter assembly 16, a side cutter assembly 13, and a rear cutter assembly 10. The top cutter assembly 16, the side cutter assembly 13, and the rear cutter assembly 10 are independently arranged and are driven by the top cutter assembly feed module 3, the side cutter assembly feed module, and the rear cutter assembly 10 feed module 9, respectively.

[0042] After the folding is completed, the three independent cutting blade assemblies complete the cutting operation in sequence according to the controller's preset timing. Each assembly is driven by a dedicated high-precision feed module, and the feed direction is adapted to the processing position requirements.

[0043] And a top cutter safety maintenance module 14, a side cutter safety maintenance module 12, and a rear cutter safety maintenance module 11 are respectively provided for the top cutter assembly 16, the side cutter assembly 13, and the rear cutter assembly 10.

[0044] The top cutter assembly 16 is located above the frame 7 and is driven vertically by the top cutter assembly feed module 3 to complete the top edge trimming of the aluminum-plastic film. The side cutter assembly 13 is located on the side of the frame 7 and is driven horizontally by the side cutter assembly feed module, which is hidden inside the frame 7, to complete the side edge trimming. The rear cutter assembly 10 is located at the rear of the frame 7 and is driven vertically by the rear cutter assembly feed module 9 to complete the edge trimming.

[0045] When the cutting tool needs to be replaced, set, or repaired, the corresponding safety maintenance module (top cutter, side cutter, and rear cutter safety maintenance module 11) is activated. Its built-in tool locking mechanism can lock the position of the tool assembly in the maintenance state, and the quick-release interface enables quick disassembly and assembly of the tool. Each safety maintenance module is integrated between the corresponding cutting tool assembly and the feed module, without the need to disassemble other parts, which greatly simplifies the maintenance operation.

[0046] In this embodiment, the controller is electrically connected to each mechanism and feed module throughout the entire processing process, precisely coordinating the start, stop and speed matching of each action to achieve seamless connection between processes. No manual intervention is required throughout the process, achieving a fully automatic processing effect.

[0047] Furthermore, in the folding mechanism, the aluminum-plastic film folding fixture 4 is slidably connected to the frame 7, and the aluminum-plastic film folding fixture module 5 drives the aluminum-plastic film folding fixture 4 to move in the horizontal direction.

[0048] In the folding mechanism, the aluminum-plastic film folding fixture 4 and the frame 7 have a sliding fit structure. The aluminum-plastic film folding fixture module 5 serves as a power source, driving the folding fixture to move linearly in the horizontal direction, thereby realizing the delivery and initial precise positioning of the aluminum-plastic film to be processed.

[0049] The separate servo folding shaft 6 is located on one side of the aluminum-plastic film folding fixture 4 and is driven to rotate by the folding shaft module 8 to perform a folding operation on the aluminum-plastic film positioned on the aluminum-plastic film folding fixture 4.

[0050] The separate servo folding shaft 6 is mounted on one side of the aluminum-plastic film folding fixture 4, forming a matching layout with the positioning surface of the folding fixture. The folding shaft module 8 drives the separate servo folding shaft 6 to perform precise rotational motion. Using the rotational force of the shaft, the aluminum-plastic film that has been positioned and fixed on the folding fixture is folded in a standardized manner.

[0051] Furthermore, the top cutter assembly 16 is located above the frame 7, and the top cutter assembly feed module 3 drives the top cutter assembly 16 to move in the vertical direction;

[0052] The top cutter assembly 16 is arranged above the frame 7, corresponding to the top edge of the aluminum-plastic film. It is driven by the top cutter assembly feed module 3 to move up and down in the vertical direction to complete the cutting.

[0053] The side cutter assembly 13 is located on the side of the frame 7, and the side cutter assembly feed module drives the side cutter assembly 13 to move horizontally.

[0054] The side cutting blade assembly 13 is arranged on the side of the frame 7, corresponding to the side edge of the aluminum-plastic film. It is driven by the side cutting blade assembly feed module to move horizontally to complete the cutting.

[0055] The rear cutter assembly 10 is located at the rear of the frame 7, and the rear cutter assembly feed module 9 drives the rear cutter assembly 10 to move horizontally and longitudinally.

[0056] The rear cutter assembly 10 is located at the rear of the frame 7, corresponding to the rear edge of the aluminum-plastic film. It is driven by the rear cutter assembly feed module 9 to move horizontally and longitudinally to complete the cutting.

[0057] Furthermore, the top cutter safety maintenance module 14, the side cutter safety maintenance module 12, and the rear cutter safety maintenance module 11 all include a tool locking mechanism and a quick-release interface, which are used to lock the position of the corresponding tool components in the maintenance state and achieve quick disassembly and assembly.

[0058] The top cutter, side cutter, and rear cutter safety maintenance module 11 features a standardized structural design, with built-in tool locking mechanisms and quick-release interfaces. When the equipment enters maintenance mode (tool replacement, tool setting, or damage repair), the tool locking mechanism first rigidly locks the position of the corresponding cutter assembly, keeping it fixed in place. Then, the quick-release interface enables rapid connection and disconnection between the cutter assembly and the feed module, completing the tool maintenance operation.

[0059] Furthermore, the top cutter safety maintenance module 14 is integrated between the top cutter assembly feed module 3 and the top cutter assembly 16;

[0060] The side cutter safety maintenance module 12 is integrated between the side cutter assembly feed module and the side cutter assembly 13;

[0061] The rear cutter safety maintenance module 11 is integrated between the rear cutter assembly feed module 9 and the rear cutter assembly 10.

[0062] The top cutter, side cutter, and rear cutter safety maintenance module 11 all adopt an integrated assembly design, and are respectively integrated at the connection points between the top cutter assembly feed module 3 and the top cutter assembly 16, the side cutter assembly feed module and the side cutter assembly 13, and the rear cutter assembly feed module 9 and the rear cutter assembly 10, forming a functional connection structure between the feed module and the cutter assembly, realizing the integrated functions of power transmission, position locking, and quick assembly and disassembly.

[0063] Furthermore, the top cutter assembly feed module 3, the rear cutter assembly feed module 9, and the folding shaft module 8 are all servo motor driven linear or rotary modules.

[0064] The top cutter assembly feed module 3 and the rear cutter assembly feed module 9 are servo motor driven linear modules, which convert the rotational motion of the servo motor into precise linear feed motion, providing a stable and controllable linear driving force for the cutter assembly.

[0065] The folding shaft module 8 is a servo motor-driven rotary module, which directly provides precise rotational drive force to the separate servo folding shaft 6. The motion parameters (speed, stroke, rotation angle) of each module can be precisely controlled via electrical signals.

[0066] Furthermore, the folding blade module 15 is fixed on the folding blade module bracket 1, and the folding blade module bracket 1 is fixedly connected to the frame 7.

[0067] The folding die module 15 is rigidly fixed to the folding die module bracket 1 through a fastening structure. The folding die module bracket 1 is then integrally fixed to the frame 7, so that the folding die module 15 forms a fixed processing station layout on the equipment frame 7. When the aluminum-plastic film is transferred to the folding station, the folding die module 15 remains in place and the folding process is completed through the relative movement of the aluminum-plastic film.

[0068] Furthermore, the side-cutting blade assembly feed module is a linear drive module that is hidden inside the frame 7, and its output end is connected to the side-cutting blade assembly 13 for transmission.

[0069] The side-cutting blade assembly feed module adopts a hidden assembly design and is embedded in the internal cavity of the frame 7. Only the output end of the module extends out of the frame 7 and is connected to the side-cutting blade assembly 13 on the outside for transmission. Through the module drive inside the frame 7, the side-cutting blade assembly 13 on the outside is driven to complete the horizontal feed cutting action.

[0070] Furthermore, the folding blade module 15 includes at least one set of folding blades, the cutting edge direction of which is parallel to the folding axis of the split servo folding shaft 6.

[0071] The folding blade module 15 is equipped with at least one set of folding blades. Single or multiple sets of folding blades can be selected according to the folding width and number of layers of the aluminum-plastic film. The cutting edge direction of all folding blades is strictly parallel to the folding axis of the split servo folding shaft 6. The cutting edge trajectory of the folding blades forms a precise matching relationship with the folding trajectory of the aluminum-plastic film.

[0072] Furthermore, it also includes a controller, which is electrically connected to the aluminum-plastic film folding tooling module 5, the folding rotating shaft module 8, the top cutter assembly feed module 3, the side cutter assembly feed module, and the rear cutter assembly feed module 9, respectively, and is used to coordinate and control the action sequence of each mechanism.

[0073] The system is configured with an independent controller as the core control unit, which establishes signal transmission channels with the aluminum-plastic film folding tooling module 5, the folding shaft module 8, the top cutter assembly feed module 3, the side cutter assembly feed module, and the rear cutter assembly feed module 9 through electrical connection.

[0074] The controller stores pre-stored processing parameters and action timing logic. It sends action commands to each module by sending electrical signals, accurately coordinating the start, stop, speed, and stroke of each mechanism to achieve automated linkage of the entire process of folding, edge bending, and edge cutting.

[0075] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automatic folding and cutting system for solid-state lithium battery soft-pack aluminum-plastic shells, characterized in that, include: frame; The folding mechanism is mounted on the frame and includes an aluminum-plastic film folding fixture, an aluminum-plastic film folding fixture module that drives the aluminum-plastic film folding fixture to move, a separate servo folding shaft, and a folding shaft module that drives the separate servo folding shaft to perform the folding action. The folding mechanism is mounted on the frame, and the folding mechanism includes a folding knife module and a folding knife module bracket for fixing the folding knife module; And a top cutter safety maintenance module, a side cutter safety maintenance module, and a rear cutter safety maintenance module respectively provided for the top cutter assembly, the side cutter assembly, and the rear cutter assembly.

2. The automatic folding and cutting system for a solid-state lithium battery soft-pack aluminum-plastic shell according to claim 1, characterized in that: In the folding mechanism, the aluminum-plastic film folding fixture is slidably connected to the frame, and the aluminum-plastic film folding fixture module drives the aluminum-plastic film folding fixture to move in the horizontal direction; The separate servo folding shaft is located on one side of the aluminum-plastic film folding fixture and is driven to rotate by the folding shaft module to perform a folding operation on the aluminum-plastic film positioned on the aluminum-plastic film folding fixture.

3. The automatic folding and cutting system for a solid-state lithium battery soft-pack aluminum-plastic shell according to claim 1, characterized in that: The top cutter assembly is located above the frame, and the top cutter assembly feed module drives the top cutter assembly to move in the vertical direction; The side cutter assembly is located on the side of the frame, and the side cutter assembly feed module drives the side cutter assembly to move horizontally. The rear cutter assembly is located at the rear of the frame, and the rear cutter assembly feed module drives the rear cutter assembly to move horizontally and longitudinally.

4. The automatic folding and cutting system for a solid-state lithium battery soft-pack aluminum-plastic shell according to claim 1, characterized in that: The top cutter safety maintenance module, side cutter safety maintenance module, and rear cutter safety maintenance module all include a tool locking mechanism and a quick-release interface, which are used to lock the position of the corresponding tool components in the maintenance state and achieve quick disassembly and assembly.

5. The automatic folding and cutting system for a solid-state lithium battery soft-pack aluminum-plastic shell according to claim 1, characterized in that: The top cutter safety maintenance module is integrated between the top cutter assembly feed module and the top cutter assembly; The side cutter safety maintenance module is integrated between the side cutter assembly feed module and the side cutter assembly; The rear cutter safety maintenance module is integrated between the rear cutter assembly feed module and the rear cutter assembly.

6. The automatic folding and cutting system for a solid-state lithium battery soft-pack aluminum-plastic shell according to claim 1, characterized in that: The top cutter assembly feed module, the rear cutter assembly feed module, and the folding shaft module are all servo motor driven linear or rotary modules.

7. The automatic folding and cutting system for a solid-state lithium battery soft-pack aluminum-plastic shell according to claim 1, characterized in that: The folding blade module is fixed on the folding blade module bracket, and the folding blade module bracket is fixedly connected to the machine frame.

8. The automatic folding and cutting system for a solid-state lithium battery soft-pack aluminum-plastic shell according to claim 1, characterized in that: The side-cutting blade assembly feed module is a linear drive module that is hidden inside the frame, and its output end is connected to the side-cutting blade assembly for transmission.

9. The automatic folding and cutting system for a solid-state lithium battery soft-pack aluminum-plastic shell according to claim 1, characterized in that: The folding blade module includes at least one set of folding blades, and the cutting edge direction of the folding blades is parallel to the folding axis of the split servo folding shaft.

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