Offset Dimple Forming Along Cut Edges for Sheet Separation
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Solution Overview
Problem
Existing methods for stacking metal sheets fail to create a gap between sheets, making it difficult to separate them, as dimples formed along cut edges often nest and prevent easy handling.
Innovation Solution
A metal processing apparatus with two tool portions and a dimpler indexer that forms dimples in offset locations along the cut edges of metal sheets, ensuring an air gap is maintained between sheets when stacked.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If dimples are formed along cut edges of metal sheets to prevent tight stacking, then the sheets can be separated more easily, but the dimples may nest together and prevent gap formation
Solution Approach 1:
The patent applies asymmetry by intentionally offsetting the dimples formed in alternating sheets. Instead of forming dimples at the same location on each sheet, the dimpler is shifted by a predetermined distance (e.g., 0.5 to 2 inches) between sheets, creating an asymmetric pattern that prevents nesting and ensures gap formation when sheets are stacked.
2Ease of operation
If multiple dimples are formed along the cut edge to ensure gap maintenance, then handling is improved, but the complexity of the apparatus increases
Solution Approach 1:
The patent employs dynamics by making the dimpler position variable rather than fixed. The dimpler can be shifted between different positions along the cut edge using indexing mechanisms or adjustable positioning systems, allowing the same apparatus to create offset patterns across multiple sheets without requiring multiple separate dimpling stations.
3Manufacturing precision
If the dimpler is repositioned between sheets to create offset patterns, then nesting is prevented, but the processing time increases
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-setting the offset distances and positions before the stacking process begins. The offset distances are predetermined based on the specific metal sheet dimensions and stacking requirements, allowing the apparatus to quickly jump to predetermined positions without requiring complex real-time calculations or adjustments during the stacking process.
Data Source
AI summary
A metal processing apparatus comprising: (i) a first tool portion including a first carrier, a cutting surface, a first plurality of dimple forming elements; (ii) a second tool portion including a second carrier, in opposing relation to the first tool portion, the second tool portion having a blade or adapted to receive the blade which is adapted to contact the cutting surface for cutting an edge of a metal sheet to form a cut edge in the metal sheet, a second plurality of dimple forming elements; and (iii) a dimpler indexer to index the first plurality of dimple forming from a first pre-determined location to a second pre-determined location. The metal processing apparatus may find particular use in creating dimples along one or more cut edges of a metal sheet to allow for stacking of the metal sheets with an airgap therebetween.