Title:
MANUFACTURE OF DOOR OF REFRIGERATOR
Document Type and Number:
Japanese Patent JPS5885083
Kind Code:
A
Abstract:
A method for manufacturing a box-shaped door, which comprises the steps of cutting off the four corners of a rectangular metal blank in the square form to provide the four walls of a box body; vertically bending said cutoff four sides by a female die on whose inner wall there are provided in the stepped state an upper bending section and lower shaping section and a male die whose outer wall is shaped complementary to the inner wall of said female die; curvedly shaping the abutting edges of the corners of the four sides of the metal blank, said vertical bending and curved shaping being carried out at the same time; and welding said abutting edges to provide the box body of a box-shaped door.
Inventors:
KAWASAKI ISAMU
HAMAZAKI TAKAKAZU
HAMAZAKI TAKAKAZU
Application Number:
JP18260581A
Publication Date:
May 21, 1983
Filing Date:
November 13, 1981
Export Citation:
Assignee:
TOKYO SHIBAURA ELECTRIC CO
International Classes:
B21D51/16; B21D51/52; B21D53/00; F25D23/02; (IPC1-7): F25D23/02
Domestic Patent References:
| JPS503544U | 1975-01-14 |
Attorney, Agent or Firm:
Tsuyoshi Sato