Patent ID: 6591647
Filing Date: 2003-07-15
Classification: B21D,F28D,F28F

Abstract:
A method for manufacturing, from a flat product in sheet form, a corrugated fin for a plate-type heat exchanger comprising at least one corrugation (8),the corrugation (8) having corrugation legs (12) connecting corrugation crests (15) and corrugation troughs (16), the corrugation (8) having a series of perforations (20), the method comprising the steps of: positioning a perforating tool at a distance from a bending tool; making perforations using the perforating tool in the flat product to make a perforated product; passing the perforated product from the perforating tool (30) to the bending tool (40); forming a corrugation that includes the perforations; and after forming the corrugation, changing the relative position of the perforating tool and the bending tool in a direction of travel (Xâ€”X) of the perforated product, the step of changing the relative position comprising detecting a position of a perforation (20) on the corrugation (8), and adjusting the relative position of the perforating tool and the bending tool (30, 40) based on the detected position of the corrugation.