Protrusion molding device, protrusion molding method, and molded article
US11224909B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2016 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | May 26, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21K23/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Provided are a protrusion forming device, a protrusion forming method, and a formed 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 forming device is characterized by being equipped with a die unit provided with a die hole, and a punch unit having a large punch part with a size such that this part cannot be inserted into the die hole, and a small punch part that protrudes from the large punch part toward the die unit and can be inserted into the die hole, and characterized in that the workpiece is deformed by pressing a portion of the workpiece arranged between the die unit and the punch unit toward the die unit by means of the punch unit, thereby forming a protrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.