Lead Tab Cutting With Integrated R-Corner Forming
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Solution Overview
Problem
Conventional methods for manufacturing lead tabs for secondary batteries fail to perform R-cutting of sharp corners within an automated facility, necessitating separate equipment and reducing production efficiency.
Innovation Solution
A cutting device installed in an automated facility that cuts a continuously supplied band-shaped metal lead strip to form metal terminals while simultaneously R-cutting both edges of the cut metal lead strips to achieve smooth curvature, utilizing a punch and die with integrated blades to form smooth cut surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional cutting methods are used to form metal terminals, then the cutting process is simple, but the corners remain sharp and cause scratches on electrodes
Solution Approach 1:
The cutting device is segmented into multiple blade systems: a first cutting blade for forming the metal terminal and second cutting blades for R-cutting the corners. This segmentation allows each blade to perform a specific function, achieving both terminal formation and corner rounding in one process while keeping the device structure manageable through functional division.
Solution Approach 2:
The invention merges the terminal cutting function and corner R-cutting function into a single integrated cutting device. The first cutting blade and second cutting blades are combined in one die structure, allowing both operations to be performed simultaneously during one punching cycle, thereby improving manufacturing precision without proportionally increasing device complexity.
2Manufacturing precision
If separate R-cutting equipment is used to process sharp corners, then edge smoothness is improved, but production efficiency decreases due to additional equipment and steps
Solution Approach 1:
The invention combines terminal cutting and corner R-cutting operations into a single integrated cutting device that performs both functions simultaneously during one punching cycle. This eliminates the need for separate R-cutting equipment and processing steps, thereby maintaining high corner curvature precision while preserving production efficiency.
Solution Approach 2:
The second cutting blades are pre-positioned on the die to perform R-cutting of the corners at the same time as the first cutting blade forms the terminal. This preliminary action ensures that corner curvature is achieved during the main cutting operation without requiring additional processing steps, thus maintaining productivity.
3Manufacturing precision
If multiple separate processes are used for terminal formation and R-cutting, then each process can be optimized independently, but the overall manufacturing time increases
Solution Approach 1:
The invention merges terminal formation and corner R-cutting into a single integrated cutting device with multiple blades that operate simultaneously during one punching cycle. This allows both cutting quality requirements to be met while eliminating the time loss associated with sequential processing, as both operations are completed in parallel during the same manufacturing cycle.
Solution Approach 2:
The integrated cutting device maintains continuous useful action by performing both terminal cutting and corner R-cutting in one uninterrupted motion. The first and second cutting blades work simultaneously without interruption, ensuring that no time is lost between operations and that both cutting quality standards are achieved in a single continuous process.
Data Source
AI summary
A cutting device for manufacturing lead tabs of a secondary battery disclosed herein cuts a band-shaped metal lead strip which is continuously supplied. The cutting device for manufacturing lead tabs of a secondary battery includes: a stud part; a punch having a blade tip integrated with the lower portion of the stud part; and a die having an upper surface, which is supplied with the metal lead strip, and a pocket, which the blade tip enters and exits when cutting the metal lead strip supplied to the upper surface. The punch and the die cut the metal lead strip to form metal terminals, and at the same time, cut the edges on both sides of the cut surface so that the edges have a smooth curvature.