Title:
PUNCHING DEVICE, BAG MAKING MACHINE HAVING PUNCHING DEVICE, AND MANUFACTURING METHOD FOR BAG
Document Type and Number:
Japanese Patent JP2002200595
Kind Code:
A
Abstract:
To provide a punching device capable of preventing damage on a punching blade and securely punching a sheet.
The punching device has a die roll 4 having a flexible die 5, with a punching blade 6 for punching a supply sheet projected from a surface, wound around a peripheral surface of a rotatable roll 3, and a presser member 8 having a linear contact part 7 for pressing and contacting the supply sheet to the punching blade 6 on a surface of the die roll 4. The presser member 8 is arranged so as to incline to a rotation center axis L of the roll 3, and when the die roll 4 is rotated, the linear contact part 7 of the presser member 8 linearly contacts with a rotation locus surface formed by a tip end part 6a of the punching blade 6.
Inventors:
YOSHIKAWA KENSUKE
NAGAOKA KATSUTOSHI
YONEDA NAOYOSHI
TOMINAGA YUKA
NAGAOKA KATSUTOSHI
YONEDA NAOYOSHI
TOMINAGA YUKA
Application Number:
JP2000400957A
Publication Date:
July 16, 2002
Filing Date:
December 28, 2000
Export Citation:
Assignee:
IMURA ENVELOPE CO INC
International Classes:
B26D1/40; B26F1/38; B31B21/14; (IPC1-7): B26F1/38; B26D1/40; B31B21/20
Attorney, Agent or Firm:
Noboru Fujimoto (1 person outside)
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