Die Apparatus for Laminated Iron Core Blanking with Adjacent Dies
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing complexity and size of laminated iron cores for electric motors lead to longer blanking or stamping layouts, resulting in enlarged die apparatuses with higher production costs and reduced blanking or stamping speeds, as well as potential rigidity issues and breakage during the process.
Innovation Solution
A die apparatus design where the first and second dies are held in direct contact with each other, with a die plate that has recessed parts and ejection parts to maintain rigidity and accuracy, and a thickness that balances between 1.1 to 2.5 times the thickness of the dies, allowing for a miniaturized structure and improved productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the blanking or stamping layout is extended to accommodate more complicated configurations and larger outside diameters, then the production capacity and versatility of the die apparatus is improved, but the device size and production cost increase
Solution Approach 1:
The patent combines multiple blanking processes (inner configuration blanking and outer configuration blanking) into a single integrated die apparatus. The inner configuration blanking die and outer configuration blanking die are arranged adjacently on the same die plate, allowing both operations to be performed simultaneously on the same press apparatus without requiring separate machines or extended layouts.
Solution Approach 2:
The patent transitions from a sequential linear arrangement of processes to a two-dimensional planar arrangement on the die plate. By positioning the inner configuration blanking die and outer configuration blanking die side-by-side in the horizontal plane rather than arranging them sequentially along the feed direction, the apparatus achieves higher versatility without increasing the feed direction length.
2Adaptability or versatility
If the die apparatus is enlarged to accommodate more processes, then the production capacity is improved, but the blanking or stamping speed decreases due to increased weight
Solution Approach 1:
The patent merges multiple blanking functions into a single compact die apparatus that can be mounted on one press apparatus. By integrating the inner configuration blanking die and outer configuration blanking die in close proximity on the same die plate, the total weight of moving parts is minimized while maintaining multi-functionality, thus preserving high blanking or stamping speed.
3Productivity
If the idle process is removed to shorten the blanking or stamping layout, then the device size and productivity are improved, but the rigidity of the die plate deteriorates
Solution Approach 1:
The patent applies local reinforcement to the die plate at critical locations where the inner configuration blanking die and outer configuration blanking die are positioned adjacently. By adding localized stiffening ribs or thickening the die plate in these specific areas, the overall rigidity is maintained even though the idle process space has been eliminated and the dies are positioned closer together.
4Length of stationary object
If the dies are positioned closer together to remove the idle process, then the device size is reduced, but the holding power and accuracy deteriorate
Solution Approach 1:
The patent implements localized reinforcement structures in the die plate at the positions where the inner configuration blanking die and outer configuration blanking die are adjacently mounted. This local thickening or addition of stiffening elements provides sufficient holding power and positional accuracy for both dies even though they are positioned closer together without the idle process space.
Solution Approach 2:
The patent divides the die plate into separate mounting regions for the inner configuration blanking die and outer configuration blanking die, with each region providing independent support and positioning features. This segmented approach allows each die to maintain its holding power and accuracy even in the reduced space created by eliminating the idle process.
Data Source
AI summary
A die apparatus includes a first die and a second die which are respectively used in adjacent working stations that sequentially blank or stamp out a progressively fed thin metal sheet. The first and second dies are held in a state where outer peripheral surfaces of the first and second dies directly contact each other.