Title:
PUNCHING MACHINE AND PUNCHING METHOD
Document Type and Number:
Japanese Patent JP2009136891
Kind Code:
A
Abstract:
To efficiently form a continuous pattern consisting of symmetrical holes on a steel plate with a simple constitution.
A punching machine 1 forms the continuous pattern on the steel plate 61 by punching holes while the steel plate 61 is conveyed. The machine comprises: a plurality of punches 16a, 16b for punching holes 62 in the steel plate 61; first and second lifting blocks 15a, 15b for arranging the plurality of the punches 16a, 16b; and first and second lifting means 10a, 10b for separately moving up and down the first and second lifting blocks 15a, 15b. The punch 16a arranged on the first lifting block 15a and the punch 16b arranged on the second lifting block 15b are asymmetrically arranged with each other.
Inventors:
NAKAO KENTARO
IWASA MASAHIRO
IWASA MASAHIRO
Application Number:
JP2007314335A
Publication Date:
June 25, 2009
Filing Date:
December 05, 2007
Export Citation:
Assignee:
UCHINUKI CO LTD
International Classes:
B21D28/24
Attorney, Agent or Firm:
Hiroyuki Nakagawa
Yuji Oishi
Kei Iwata
Yuji Oishi
Kei Iwata
Previous Patent: PATTERN DEVICE FOR MOLDING CASTING MOLD
Next Patent: TRANSFER METHOD FOR MATERIAL TO BE TRANSFERRED
Next Patent: TRANSFER METHOD FOR MATERIAL TO BE TRANSFERRED