Electrode Plate Tab Machining with Indent-Guided Burr Control
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Solution Overview
Problem
Conventional electrode plate production facilities face challenges in improving the quality of tab portions due to limitations in existing formation methods, leading to issues such as burrs, chipping, and accuracy problems during the formation process.
Innovation Solution
A machining apparatus and method that form an indent at the boundary between the tab portion and unneeded portion of an electrode plate, allowing for the detachment of the unneeded portion along the indent using a die roll with a convex portion and a grip part, reducing friction and flapping, and enhancing accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a die roll cutter is used to punch out tab portions from current collector plates, then the tab portions can be formed continuously, but edge burrs and chipping occur reducing the quality of electrode plates
Solution Approach 1:
The cutting process is divided into two distinct stages: first, an indent is formed at the boundary of the tab portion using a convex portion on the die roll; second, the unneeded portion is detached by applying force along the pre-formed indent. This segmentation allows the cutting edge to follow a predetermined path, preventing burrs and chipping while maintaining continuous production capability.
Solution Approach 2:
Before the actual detachment of the unneeded portion, the convex portion on the die roll first forms an indent along the boundary of the tab portion. This preliminary action creates a guide path that ensures the subsequent cutting force is applied precisely, eliminating edge burrs and chipping while enabling continuous operation.
2Ease of manufacture
If conventional punching methods are used to form tab portions, then the process is simple and fast, but accuracy and quality of the electrode plates deteriorate due to burrs and chipping
Solution Approach 1:
The manufacturing process is segmented into indent formation and detachment stages, maintaining operational simplicity while significantly improving boundary accuracy. The convex portion on the die roll forms the indent, and subsequent force application detaches the unneeded portion along this precise path, eliminating burrs and chipping.
Solution Approach 2:
The indent formed by the convex portion acts as an intermediary element between the cutting tool and the material. This intermediate step creates a predetermined separation path that guides the detachment process, ensuring high accuracy in tab portion boundaries while keeping the overall process straightforward.
3Productivity
If the unneeded portion is detached without forming an indent first, then the process is faster, but friction and flapping increase reducing quality
Solution Approach 1:
The convex portion on the die roll first forms an indent along the boundary of the tab portion before detachment occurs. This preliminary action creates a smooth separation path that reduces friction and prevents flapping during the subsequent detachment process, maintaining both speed and quality.
Solution Approach 2:
The harmful effects of friction and flapping are eliminated by extracting the material along a pre-formed indent path. The indent serves as a guide that allows the unneeded portion to be removed cleanly without generating excessive friction or flapping, thus maintaining high productivity while improving quality.
Data Source
AI summary
A machining apparatus for electrode plates includes: a machining part that forms an indent at the boundary between a tab portion and an unneeded portion in an area reserved for forming the tab portion of an electrode plate; and a removal part that detaches the unneeded portion from the electrode plate along the indent by applying force to the unneeded portion.