Device for manufacturing fins and method for manufacturing fins

A fin manufacturing method for manufacturing fins for attachment to a tube provided with a refrigerant flow path, the fin manufacturing method comprising:

• forming, by forming in a plate body having thermal conductivity a plurality of openings for tube-insertion and a plurality of slits while leaving uncut portions, strips that each have openings of the plurality of openings along a longitudinal direction of the strips and are partially coupled to each other in a width direction wherein the plurality of slits extend in a longitudinal direction of the strips;
• conveying the plurality strips that are partially coupled to each other in the width direction in the longitudinal direction of the strips;
• separating, by cutting the uncut portions via which the strips are coupled to each other in the longitudinal direction of the strips, the strips such that each strip has a width of the fin;
• and
• cutting the separated strips that each have the width of the fin to a predetermined length.

A fin manufacturing apparatus for manufacturing fins for attachment to a tube provided with a refrigerant flow path, the fin manufacturing apparatus comprising:

• a first cutting device to form, by forming in a plate body having thermal conductivity a plurality of openings for tube-insertion and a plurality of slits while leaving uncut portions, strips that each have openings of the plurality of openings along a longitudinal direction of the strip and are partially coupled to each other in a width direction;
• a second cutting device to separate, by cutting the uncut portions via which the strips are coupled to each other, the strips such that each strip has a width of the fin;
• and
• a cutoff device to cut the separated strips that each have the width of the fin to a predetermined length, wherein the first cutting device includes roll-shaped cutting blades.

A fin manufacturing apparatus for manufacturing fins for attachment to a tube provided with a refrigerant flow path, the fin manufacturing apparatus comprising:

• a first cutting device to form, by forming in a plate body having thermal conductivity a plurality of openings for tube-insertion and a plurality of slits while leaving uncut portions, strips that each have openings of the plurality of openings along a longitudinal direction of the strip and are partially coupled to each other in a width direction;
• a second cutting device to separate, by cutting the uncut portions via which the strips are coupled to each other, the strips such that each strip has a width of the fin;
• a cutoff device to cut the separated strips that each have the width of the fin to a predetermined length;
• and
• a guiding device disposed between the first cutting device and the second cutting device to guide and supply, to the second cutting device, the strips that are partially coupled to each other in the width direction, are arranged in the width direction, and are conveyed in the longitudinal direction.