Title:
MANUFACTURING DEVICE FOR SQUARE ELBOW DUCT
Document Type and Number:
Japanese Patent JP2023029221
Kind Code:
A
Abstract:
To provide a manufacturing device for a square elbow duct, which can reduce a burden on an operator and appropriately bend the side edge end of a fan-shaped wide wall.SOLUTION: This manufacturing device comprises: a work table 2 on which a fan-shaped side wall constituting a square elbow duct square in section is placed; a holding plate 3 that holds the fan-shaped side wall with the work table 2 in a state where a bent part which is one end side of a circular-arc part of the fan-shaped side wall is protruded outside; and a pressing unit 4 that can move back and forth and advances to press and bend the bent part.SELECTED DRAWING: Figure 1
Inventors:
SHOJI TAKAHIRO
Application Number:
JP2022092307A
Publication Date:
March 03, 2023
Filing Date:
June 07, 2022
Export Citation:
Assignee:
VANTAGE KOGYO KK
WATANABE DUCT KOGYO CO LTD
WATANABE DUCT KOGYO CO LTD
International Classes:
B21D19/04
Attorney, Agent or Firm:
Narutokirou Harashima