Title:
プレス型及びプレス成形品
Document Type and Number:
Japanese Patent JP7399905
Kind Code:
B2
Abstract:
To restrain formation of wrinkles on a management surface without increasing press processing load during press-molding of a press molding having a management surface that requires molding accuracy, by providing a clearance for receiving an excess thickness that can cause wrinkles around a part forming the management surface.SOLUTION: Respective vertical wall molding parts 52, 63 of a die 50 and a flexure blade 62 respectively have management surface molding parts (52A, 63A) for molding a welding projection part that requires molding accuracy, and management surface outer molding parts 52B, 63B for molding management surface outer parts that does not requiring molding accuracy. A portion adjacent to the management surface molding part 52A of the management surface outer molding part 52B has an excess thickness receiving part 52C for receiving an excess thickness of a workpiece during press-molding. A clearance between the management surface molding parts is formed in a size of molding a plate material by sandwiching it in press-molding. A clearance C between the excess thickness receiving part 52C and the management surface outer molding part 63B is formed in a size exceeding a plate thickness T in the plate thickness direction of the plate material during press-molding of the plate material.SELECTED DRAWING: Figure 14
Inventors:
Hiroyasu Kosaka
Application Number:
JP2021060400A
Publication Date:
December 18, 2023
Filing Date:
March 31, 2021
Export Citation:
Assignee:
Toyota Iron Works Co., Ltd.
International Classes:
B21D22/20; B21D22/26; B21D24/00; B62D25/04
Domestic Patent References:
| JP20201653A | ||||
| JP2018202435A | ||||
| JP20162817A |
Foreign References:
| CN103569206A |
Attorney, Agent or Firm:
Patent Attorney Corporation Okada International Patent Office