Chasing-Cutting Mechanism With Post-Cut Acceleration for Electrode Tape
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Solution Overview
Problem
Existing cutting technologies in lithium cell manufacturing face challenges such as low cutting precision, slow efficiency, material blockage, and high short-circuit detection rejection rates due to the need to stop or slow down the material tape for accurate cutting, and the instability of the linear chasing-cutting method.
Innovation Solution
A cutting device with a linear chasing-cutting mechanism, acceleration driving mechanism, and deviation rectification mechanism, which includes a feeding mechanism, electrode guide plate, and dust adsorption system to improve precision, efficiency, and stability by controlling the speed and acceleration of the material tape during cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the material tape is stopped or slowed down during cutting to ensure cutting accuracy, then the cutting precision is improved, but the lamination preparation efficiency is reduced
Solution Approach 1:
The acceleration driving mechanism performs preliminary action by accelerating the material tape before it enters the cutting zone. This ensures that the material tape reaches the required speed for high-speed chasing-cutting before the cutting operation begins, eliminating the need to slow down or stop the material tape during cutting while maintaining cutting precision.
Solution Approach 2:
The system dynamically adjusts the speed of the material tape through the acceleration driving mechanism and the chasing-cutting mechanism. Both the material tape and the cutting blade are driven at synchronized variable speeds, allowing high-speed cutting without compromising precision. The dynamic speed matching enables the cutting blade to chase the material tape at the same speed, achieving both high efficiency and high precision.
2Productivity
If the linear chasing-cutting method is used with large movement speed and acceleration of the linear motor, then the cutting efficiency is improved, but the cutting accuracy and mechanism stability become difficult to guarantee
Solution Approach 1:
The acceleration driving mechanism acts as an intermediary between the material supply and the cutting operation. It provides controlled acceleration to the material tape, ensuring smooth speed transitions and reducing mechanical shocks. This intermediary mechanism enables high-speed cutting while maintaining stability and accuracy by mediating the speed and acceleration profiles.
Solution Approach 2:
The system changes the speed and acceleration parameters dynamically during operation. The acceleration driving mechanism and chasing-cutting mechanism adjust their speed and acceleration parameters in real-time to match each other, enabling high cutting efficiency while maintaining cutting accuracy. The parameters are optimized to balance speed, acceleration, and stability.
3Speed
If the linear chasing-cutting method is used with large acceleration, then the cutting speed is improved, but the mechanism stability is difficult to guarantee
Solution Approach 1:
The acceleration driving mechanism performs preliminary acceleration of the material tape before it reaches the cutting zone. This preliminary action allows the system to build up speed gradually with controlled acceleration, reducing sudden mechanical shocks and vibrations that would compromise stability. The chasing-cutting mechanism then maintains synchronized speed, ensuring stable high-speed operation.
4Productivity
If the material tape is conveyed over long distances by roller feeding, then the production capacity is maintained, but material blockage occurs easily
Solution Approach 1:
The feeding mechanism is segmented into multiple roller groups arranged in sequence. Each roller group handles a specific section of the material tape conveyance, reducing the burden on any single roller and minimizing the risk of blockage. The segmented structure allows for better control and easier maintenance, improving overall reliability while maintaining production capacity.
Data Source
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AI summary
The embodiment of the present disclosure provides a high-speed cutting device, which relates to the technical field of lithium battery manufacturing, the high-speed cutting device includes a mounting frame, a feeding mechanism, a linear chasing-cutting mechanism, an electrode guide plate, and an acceleration driving mechanism, the acceleration driving mechanism is provided on the discharging side of the electrode guide plate, and configured to perform acceleration driving on a material tape. In the present disclosure, the acceleration driving mechanism is provided behind the linear chasing-cutting mechanism to realize the acceleration driving of the material tape, so that the feeding speed of the material tape reaches a preset value, this arrangement method enables not too high speed and acceleration of the linear chasing-cutting mechanism during linear chasing-cutting, so that the linear chasing-cutting is completed at a relatively low speed, which can improve the precision and efficiency of the preparing piece, and simultaneously, also improve the stability of the mechanism better.