Fin manufacturing apparatus
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United States of America Patent
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Jun 12, 2018
Issued Date -
N/A
app pub date -
Nov 19, 2014
filing date -
Dec 25, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A fin manufacturing apparatus includes an inter-row slit processing device having upper and lower blades with blade edges extending in a feed direction of a thin metal plate that serves as a material of a fin. The upper and lower blades are engaged with each other to form a perforated slit between rows on the fin. Each blade has a recess where the blade edge is partially recessed toward a ridge. Recess depth dimensions are smaller than a lapping amount of the blades when the blades are engaged with each other. At least one of the blades is slidable in a longitudinal direction of the blade edge to allow the recesses to be moved from overlapping positions to adjacent positions as viewed along a direction orthogonal to the longitudinal direction of the blade edges when the blades are engaged with each other over the lapping amount.
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