Electrode Notching Punch Stabilization With Wedge Block
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Solution Overview
Problem
The existing notching apparatuses for cutting electrode substrates in lithium secondary batteries face issues with punch shaking due to accumulated impact and vibration, leading to process failures and increased production costs from shortened punch and holder replacement periods.
Innovation Solution
A notching apparatus is designed with a wedge-shaped block inserted into the mounting groove to maintain close contact between the punch and the groove's inner surfaces, utilizing a higher friction force between the block and the groove's surfaces to prevent punch movement, and featuring a coupling hole with a female screw thread for easy block removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the punch is repeatedly used for notching, then productivity increases, but the punch shakes due to accumulated impact and vibration
Solution Approach 1:
A block is introduced as an intermediary component between the punch and the mounting groove. This block maintains constant contact with the punch and presses it against the inner surface of the mounting groove, preventing the punch from shaking while allowing continuous operation. The block acts as a mediator that absorbs and compensates for the cumulative impact and vibration effects.
2Manufacturing precision
If the mounting groove is designed to fit the punch, then positioning accuracy is improved, but the punch still shakes due to gap accumulation from impact
Solution Approach 1:
The block is pre-installed in the mounting groove to counteract the harmful effects of impact and vibration before they can cause gap accumulation. By continuously pressing the punch against the groove's inner surface, the block prevents the formation of operational gaps, thereby maintaining positioning accuracy throughout the punching process.
3Ease of manufacture
If the punch structure is simplified for easy manufacturing, then ease of manufacture is improved, but the punch becomes more susceptible to shaking
Solution Approach 1:
The system is divided into separate components: the punch, the block, and the mounting groove. This segmentation allows the punch to remain simple and easy to manufacture, while the block serves as a dedicated component to prevent shaking. The functions are separated such that the punch focuses on cutting while the block handles the stabilization function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively prevents punch shaking, ensuring accurate positioning and extending the replacement period of the punch and holder, thereby reducing production costs and improving process reliability.
Implementation Method 1
utilizing a higher friction force between the block and the groove's surfaces to prevent punch movement
Data Source
AI summary
A notching apparatus includes a punch that descends to notch an electrode, a holder having one surface in which a mounting groove is provided, the punch having one end inserted into the mounting groove, and a block inserted into the mounting groove together with the punch. When inserted into the mounting groove, the block presses the punch so that the punch comes into close contact with one of inner surfaces of the mounting groove.