Title:
PROTRUSION MOLDING DEVICE, PROTRUSION MOLDING METHOD, AND MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2017/006830
Kind Code:
A1
Abstract:
Provided are a protrusion molding device, a protrusion molding method, and a molded article, with which a height equal to or greater than the plate thickness is possible, the edges are sharp, and cracking can be prevented. This protrusion molding device (1) is characterized by being equipped with a die unit (12) provided with a die hole (12a), and a punch unit (40) having a large punch part (41) with a size such that this part cannot be inserted into the die hole (12a), and a small punch part (42) that protrudes from the large punch part (41) toward the die unit (12) and can be inserted into the die hole (12a), and characterized in that the workpiece (W) is deformed by pressing a portion of the workpiece arranged between the die unit (12) and the punch unit (40) toward the die unit (12) by means of the punch unit (40), thereby forming a protrusion (W1).
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Inventors:
NISHIJIMA SHINNOSUKE (JP)
TOMIMURA KOUKI (JP)
TOMIMURA KOUKI (JP)
Application Number:
PCT/JP2016/069332
Publication Date:
January 12, 2017
Filing Date:
June 29, 2016
Export Citation:
Assignee:
NISSHIN STEEL CO LTD (JP)
International Classes:
B21J5/02; B21D22/02
Foreign References:
| JPH02112845A | 1990-04-25 | |||
| JPS55122927U | 1980-09-01 |
Other References:
See also references of EP 3320997A4
Attorney, Agent or Firm:
HAYASHI, Kazuyoshi et al. (JP)
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