Open-Side Electrode Plate Blanking for Continuous Substrate Cutting
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Solution Overview
Problem
Existing methods for manufacturing secondary battery electrode plates are inefficient and result in waste due to the need for continuous substrate transfer and the inability to blank substrates without leaving extra space.
Innovation Solution
A blanking device with a first mold having a die and a first stripper with an open side portion, and a second mold with a punch and a second stripper, allowing for continuous substrate processing and efficient cutting of electrode plates without leaving extra space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If continuous substrate transfer is performed in existing methods, then substrate processing can be maintained, but productivity is reduced and waste is generated due to inability to blank without leaving extra space
Solution Approach 1:
The die is divided into multiple sections with different structures: a first section with a first open side for substrate insertion, a second section with a second open side for electrode plate ejection, and a third section for cutting. This segmentation allows different operations to occur simultaneously in different sections, enabling continuous processing without waste
Solution Approach 2:
The patent implements continuous blanking by having the substrate continuously fed through the first open side while the cutting action occurs in the third section and the finished electrode plates are ejected from the second open side. This eliminates idle time between operations and maintains continuous useful action throughout the blanking process
2Manufacturing precision
If existing blanking methods are used, then electrode plates can be manufactured, but extra space is left around cutting lines reducing material utilization
Solution Approach 1:
Instead of having a traditional closed die structure that leaves extra space, the patent inverts the approach by creating open sides in the die structure. This allows the substrate to be inserted and cut precisely along the desired electrode plate boundaries without generating extra space or waste material
3Stability of the object's composition
If traditional closed die structures are used, then structural integrity is maintained, but continuous processing and substrate insertion are hindered
Solution Approach 1:
The die is segmented into multiple functional sections (first section for insertion, second section for ejection, third section for cutting) connected in sequence. This segmentation maintains the overall structural integrity of the die while enabling continuous processing operations in each section
Solution Approach 2:
The die structure incorporates dynamic elements with movable sections that can open and close. The first and second open sides allow the die to dynamically adapt its structure for substrate insertion and electrode plate ejection while maintaining stability during the cutting operation in the third section
Data Source
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AI summary
The invention comprises a blanking device (100) for a secondary battery electrode plate, the blanking device (100) comprising: a first mold (110) including a die (116) and a first stripper (118), the die (116) surrounding the first stripper (118) and having a structure with one open side portion, and the first stripper (118) having a structure with one open side portion aligned with the one open side portion of the die (116); and a second mold (120) facing the first mold (110), the second mold (120) including a punch (126) and a second stripper (128), and the first mold (110) being moveable toward the second mold (120), and a method of manufacturing an electrode plate for a secondary battery, the method comprising: aligning a substrate (980) between a first mold (110) and a second mold (120) of a blanking device (100), the first mold (110) having one open side portion in a direction in which the substrate (980) is pulled out; lowering the first mold (110) toward the second mold (120) to fix the substrate (980); making the electrode plate (982) by blanking the substrate (980); and transferring the electrode plate (982) to a subsequent process by an electrode plate transfer device (970), the electrode plate transfer device (970) entering the one open side portion of the first mold (110).