Title:
PROGRESSIVE DIE AND PROCESSING METHOD WITH USE THEREOF
Document Type and Number:
Japanese Patent JP2023157821
Kind Code:
A
Abstract:
To control or adjust displacement of a belt-like thin steel plate due to a self-weight regardless of a width size of the belt-like thin steel plate in a progressive die.SOLUTION: A progressive die 1 comprises an upper die 3 and a lower die 4, and one stage for processing a belt-like thin steel plate F includes side guides 61A, 61B which guide a side part on one side of the belt-like thin steel plate F in a transportation direction, and lifters 63A, 63B which is located corresponding to each of the side guides 61A, 61B and lifts the belt-like thin steel plate F. The lifters 63A, 63B respectively have pressing parts 79A, 79B which press an undersurface of the belt-like thin steel plate F. The side guides 61A, 61B respectively have contact parts 70A, 70B contacting a top face of the belt-like thin steel plate, and the contact parts 70A, 70B are so located as to sandwich the pressing parts 79A, 79B in the transportation direction, and are positioned below an advance position of the corresponding pressing parts 79A, 79B.SELECTED DRAWING: Figure 4
Inventors:
FU TAO
YOSHIDA TATSUHIRO
ICHIKAWA TAKASHI
YOSHIDA TATSUHIRO
ICHIKAWA TAKASHI
Application Number:
JP2022132505A
Publication Date:
October 26, 2023
Filing Date:
August 23, 2022
Export Citation:
Assignee:
KURODA PRECISION IND LTD
International Classes:
B21D37/00; B21D28/02; B21D43/00; H02K15/02
Attorney, Agent or Firm:
Oshima Patent Office