Patent ID: 9079277
Filing Date: 2015-07-14
Classification: B21D,B23P,Y10T

Abstract:
1. A manufacturing apparatus for manufacturing flattened tube fins, each having a cutaway portion through which a heat exchanger flattened tube is inserted, formed from one side to the other side in a width direction, comprising: a press apparatus including a mold apparatus that forms the cutaway portions in an unmachined thin plate of metal to thereby produce a metal strip; an inter-row slit apparatus that cuts the metal strip in which the cutaway portions have been formed, into predetermined widths to thereby form a plurality of metal strips having a product width, being arranged in the width direction; a cutoff apparatus that cuts the metal strips having the product width into predetermined lengths; and a stacking apparatus for stacking flattened tube fins, each having a cutaway portion through which a heat exchanger flattened tube is inserted, formed from one side to the other side in a width direction, comprising: a stack pin to be inserted into the cutaway portion, wherein the stack pin has a swing-preventing structure, and in the swing-preventing structure, an end portion of a stack pin on an opening side of the cutaway portion of a flattened tube fin is formed in a taper so as to become gradually narrower from a bottom toward a tip thereof, and an end portion of a stack pin on an opposite side to the opening side of the cutaway portion of the flattened tube fin is formed as a vertical column that extends in a vertical direction, said stacking apparatus stacking the flattened tube fins cut into predetermined lengths by the cutoff apparatus.