IRONING PROCESSING DEVICE FOR HEAT-EXCHANGER FIN, HEAT EXCHANGER FIN, AND HEAT EXCHANGER

摘要

PROBLEM TO BE SOLVED: To enable a lubrication oil to be supplied to a longitudinal oil supply passage at the ironing punch shaft center when providing a height adjustment device that adjusts an ironing punch height projecting out of the top face of a lower die plate.SOLUTION: The lower end surface of an ironing punch 71 is supported by a height adjustment device 77 via an oil supply plate 76. An oil supply pipe arrangement space 87 where an oil supply pipe 75 is arranged is formed between a punch plate 72 on one lateral side of the oil supply plate 76 and a lower die set 52a to connect the oil supply pipe 75 to the oil supply plate 76. A lubrication oil supplied from the oil feed pipe 75 can be supplied to an oil supply passage 81 of the ironing punch 71. When a height of the upper end surface of the ironing punch 71 is to be adjusted by the height adjustment device 77, the ironing punch 71, the oil supply plate 76, and the oil supply pipe 75 are integrally moved up and down. At this time, a gap is formed above and below the oil supply pipe 75 to enable the vertical motion of the oil supply pipe 75 in the oil supply pipe arrangement space 87.