Method of manufacturing plate-like molded body having a plurality of thickened portions, and plate-like molded body having a plurality of thickened portions
US10464116B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2015 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Nov 2, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D35/006
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
[Object] To provide a method of manufacturing a plate-like molded body having a thickened portion in a region spaced apart from an edge in a substantially flat plate-like portion.[Solution] Provided is a method of manufacturing a plate-like molded body having a plurality of thickened portions, including at least a drawing step of obtaining by a drawing process a cylindrical drawn molded body including a flat plate portion and a cylindrical drawn portion that swells in such a manner as to project from the flat plate portion and has a circular top portion. The drawing step includes a first step of pressing a region spaced apart from an edge in a plate-like member having a flat plate shape, with a first mold and a second mold, to form a concave curved portion in the plate-like member, and a second step of holding an outer circumferential section of the plate-like member between a third mold and a fourth hold while a region containing the concave curved portion in the plate-like member is held between the first mold and the second mold, and moving the first mold and the second mold relative to the third mold and the fourth mold to cause the region containing the concave curved portion …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.