Rotating Table Stacking Apparatus for Lithium Cell Electrodes
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Solution Overview
Problem
There is a need for a system to efficiently stack anode sheets, cathode sheets, and separators in lithium cells with a simple, precise, and high-speed mechanism, as existing methods lack efficiency and productivity.
Innovation Solution
A stacking apparatus with a first rotating table and two turning units, each equipped with arms that overlap and rotate to position anode and cathode sheets with separators at specific angles, allowing for efficient stacking and unloading while maintaining a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple sheets are stacked simultaneously at multiple positions, then productivity is improved, but device complexity increases
Solution Approach 1:
The stacking apparatus is divided into multiple independent turning units, each responsible for a specific stacking position. Each turning unit includes separate arms for picking up different sheets (anode, cathode, separator), allowing simultaneous operation at multiple positions while maintaining modular, manageable complexity
Solution Approach 2:
Multiple turning units share a common rotating table and coordinate their operations through centralized control. The arms of different turning units work in concert to stack multiple sheets simultaneously at different positions on the rotating table, combining individual actions into a unified high-speed stacking process
2Manufacturing precision
If pickup positions are dispersed around the rotating table, then stacking precision is improved, but movement distance increases
Solution Approach 1:
The arms are configured to move in vertical and radial directions rather than only along the circumferential direction. This multi-dimensional movement allows the arms to reach dispersed pickup positions on the rotating table while minimizing the total travel distance compared to purely circumferential movement
3Area of stationary object
If turning units overlap the rotating table, then space efficiency is improved, but mechanical interference risk increases
Solution Approach 1:
The turning units are designed with dynamic, movable arms that can adjust their positions and trajectories in real-time. This dynamic configuration allows the arms to navigate around the rotating table components, avoiding fixed obstructions and preventing mechanical interference while maintaining a compact footprint
Solution Approach 2:
The rotating table serves as an intermediary platform that coordinates the movements of multiple turning units. By providing a centralized rotation mechanism, it synchronizes the positions of different stacking regions with the pickup positions, ensuring that arms from different turning units do not collide while maintaining compact spatial arrangement
Data Source
AI summary
A stacking apparatus includes a first rotating table that is equipped with a plurality of stacking regions and intermittently rotates the plurality of stacking regions respectively to a plurality of work positions, a first turning unit; and a second turning unit. The first turning unit includes a first arm that turns between the first stacking position and a first pickup position where an anode sheet is picked up and a second arm that turns in concert with movement of the first arm between the first stacking position and a second pickup position where a separator is picked up. The second turning unit includes a third arm that picks up a cathode sheet and a fourth arm that turns in concert with movement of the third arm and picks up a separator.