Open-Side Electrode Plate Blanking for Continuous Substrate Transfer

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Solution Overview

Problem

Existing blanking devices for manufacturing secondary battery electrode plates face challenges in efficiently cutting metal thin film substrates to precise standards, leading to inefficiencies and increased production time.

Innovation Solution

A blanking device with a first mold having one open side portion and a second mold with a punch and stripper, allowing for continuous substrate alignment, fixing, and cutting, facilitated by an electrode plate transfer device that enters through the open side portion of the first mold.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If a traditional closed blanking device is used, then cutting precision is maintained, but production time increases and efficiency decreases

Engineering Contradiction:

Improveproduction efficiencyVSAvoidproduction time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The blanking device is segmented into two separate molds: a first mold with an open side portion for substrate loading and transfer, and a second mold for cutting operations. This segmentation allows simultaneous substrate transfer and cutting operations, eliminating idle time and improving production efficiency without compromising cutting precision.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If the first mold is completely closed, then substrate handling is simplified, but transfer device access is blocked

Engineering Contradiction:

Improvesubstrate handlingVSAvoidmold structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The first mold is designed with an asymmetric structure featuring one open side portion while maintaining closed other sides. This asymmetric design allows the transfer device to access and remove substrates from the open side, while the closed sides provide sufficient constraint and handling stability during the blanking operation.

Inventive Principle:

Principle #4Asymmetry

3Productivity

If continuous substrate transfer is implemented, then productivity increases, but alignment precision may deteriorate

Engineering Contradiction:

Improvecontinuous operation capabilityVSAvoidsubstrate alignment precision

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The open side portion of the first mold acts as an intermediary interface between the transfer device and the cutting operation. This design allows the transfer device to continuously load and remove substrates through the open side while the closed structure maintains precise alignment and positioning during the actual cutting process, preventing precision deterioration.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20250128311A1Blanking device and method of manufacturing electrode plate for secondary battery using the same

Publication Date: 2025.04.24 SAMSUNG SDI CO LTD

AI summary

A blanking device for a secondary battery electrode plate, including a first mold including a die and a first stripper, the die surrounding the first stripper and having a structure with one open side portion, and the first stripper having a structure with one open side portion aligned with the one open side portion of the die, and a second mold facing the first mold, the second mold including a punch and a second stripper, and the first mold being moveable toward the second mold.