公开(公告)号：JPH1110436A

公开(公告)日：1999-01-19

申请号：JP16398197

申请日：1997-06-20

Applicant: MATSUSHITA REFRIGERATION

Inventor： KATO KAORU ,  ITO HIRONORI ,  MORIYAMA TSUGUNARI

IPC: B23D15/04 ,  F28F1/32

Abstract: PROBLEM TO BE SOLVED: To prevent a cutting surface and an erected piece of a plate of a plate-like fin from being deformed by providing a pressing member brought into contact with the upper surface of the plate-like fin before an upper blade reaches the upper surface of the plate-like fin to clamp the plate-like fin from both surfaces with a lower blade. SOLUTION: With lowering of an upper slitter block 18, a pressing member 19 is also lowered to come into contact with the plate-like fin 11 and simultaneously press the plate-like fin 11 by elastic force of a spring 20. With the plate- like fin 11 pressed by the pressing member 19, an upper blade 16 is brought into contact with the plate-like fin 11 to cut the plate-like fin 11 with a lower blade 15 by shearing force thereof. Thus, the plate-like fin 11 is pressed by the pressing member and cut, so that the cutting surface 14 of the plate-like fin 11 is kept from being deformed. Furthermore, an erected piece 13 of the plate will not be also deformed so that an opening part of the erected piece 13 of the plate is not blocked.