Additive manufacturing device with sliding plate and peeling film
US10086535B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 2015 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Mar 3, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2827/18
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Devices, systems and methods are disclosed which facilitate reduction of separation forces in additive manufacturing devices, thereby enabling creation of higher resolution parts. In an aspect, an additive manufacturing device utilizing a photopolymer comprises a vat holding photocurable resin, a build platform movable in a vertical direction and an image source which selectively projects part cross sections into the vat in order to polymerize the resin and form a part in a layer-wise fashion. The image area of the vat is formed by a transparent film, such as Teflon FEP film, stretched under tension. A horizontally slideable shutter is slideable between the film and the imager, providing support for the film when needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.