Patent ID: 9089935
Filing Date: 2015-07-28
Classification: B21D,B23P

Abstract:
1. A manufacturing apparatus for manufacturing flattened tube fins in which cutaway portions, into which flattened tubes for heat exchanging are inserted, are formed from one side toward the other side in a width direction, the manufacturing apparatus comprising: a press apparatus equipped with a mold apparatus that forms the cutaway portions in an unmachined thin plate of metal to produce a metal strip; an inter-row slit apparatus for cutting the metal strip, in which the cutaway portions have been formed, into predetermined widths to form a plurality of metal strips of a product width that are arranged in the width direction; a cutoff apparatus that cuts each of the plurality of metal strips of the product width into predetermined lengths to obtain flattened tube fins; and a metal strip guide which is disposed between the inter-row slit apparatus and the cutoff apparatus and supplies the respective metal strips of the product width that have been formed by the inter-row slit apparatus to the cutoff apparatus in a state where the metal strips are separated from one another, wherein the metal strip guide includes: paths that are formed on inclined surfaces provided with an apex on a side of the metal strips of the product width formed by the inter-row slit apparatus where the cutaway portions are formed and inclined downward from the apex in directions that are perpendicular to a supplying direction of the metal strips of the product width, the inclined surfaces being formed wider than the product width of the metal strips of the product width; and wall portions that extend from ends in a width direction of the paths.