Dual Gripper Electrode Sheet Cutting Device for High-Speed Stability
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Solution Overview
Problem
The existing cutting devices for electrode sheet laminates face challenges with high noise levels, increased abrasion, and reduced cutter lifespan at high feeding rates, limiting production efficiency.
Innovation Solution
A cutting device with dual transport grippers that alternately draw and transport the electrode sheet laminate, allowing the cutter to operate at a set position and maintain stability even at rapid feeding rates, thereby extending cutter replacement time and improving production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If continuous feeding manner is used with cutter moving back and forth, then production efficiency is improved at low feeding rates, but noise increases and cutter abrasion increases at high feeding rates
Solution Approach 1:
The transport function is segmented into multiple grippers (first transport gripper and second transport gripper) that operate alternately. While one gripper transports the electrode sheet laminate, the other returns to its initial position, enabling continuous operation without the cutter needing to move back and forth.
Solution Approach 2:
The system transitions from a static cutter position to a dynamic multi-gripper system where grippers alternately perform transport and return movements. This dynamic allocation of functions allows the cutter to remain stationary while maintaining high feeding rates without excessive noise or abrasion.
2Productivity
If cutter moves back and forth to cut electrode sheet laminate, then cutting is performed continuously, but cutter replacement time decreases at high feeding rates
Solution Approach 1:
The transport function is divided between multiple grippers, allowing the cutter to remain stationary at a fixed position. The first gripper transports the electrode sheet to the cutter while the second gripper returns to its starting position, creating a continuous cutting process without cutter movement and reducing wear.
Solution Approach 2:
Multiple transport grippers act as intermediaries between the electrode sheet laminate and the stationary cutter. These grippers handle the transport and positioning functions, allowing the cutter to focus solely on cutting at a fixed position, thereby extending its operational life.
3Device complexity
If single transport gripper is used, then device complexity is reduced, but production efficiency is limited at high feeding rates
Solution Approach 1:
The transport function is segmented into multiple grippers that operate in parallel with alternating cycles. The first transport gripper transports while the second returns, and vice versa, effectively doubling the transport capacity and enabling higher feeding rates without proportionally increasing system complexity.
Solution Approach 2:
The system ensures continuous useful action by having one gripper transport while another returns simultaneously. This overlapping operation eliminates idle time and maintains continuous feeding at high rates, maximizing productivity while keeping the added complexity manageable.
Data Source
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AI summary
Disclosed is a device for cutting an electrode sheet laminate wherein two or more continuous electrode sheets, in which an electrode active material is applied to one or both surfaces thereof, are laminated, to form a plurality of unit electrode laminates from the electrode sheet laminate, the device including a cutter to cut the electrode sheet laminate at a set position and thereby form unit electrode laminates, and two or more transport grippers arranged at the front of the cutter based on a feed direction of the electrode sheet laminate, the transport grippers drawing and transporting the electrode sheet laminate by one pitch, a size corresponding to the unit electrode laminate according to operation of the cutter, wherein while one of the transport grippers draws and transports the electrode sheet laminate, the remaining transport grippers move to a position for drawing.