System and method of detecting failed bed adhesion for a three-dimensional printer
US11345093B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2020 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Sep 16, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y50/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A three-dimensional printer includes an enclosure defining a chamber and a print surface disposed within the chamber. The printer further includes a nozzle displaceable relative to the print surface for melting and dispensing a filament on the print surface to form a dielectric part during a printing process. The printer further includes a filament drive system for supplying the filament to the nozzle, and one or more capacitance sensors coupled to the print surface. The printer further includes a controller electrically coupled to the capacitance sensors for measuring a capacitance, with the controller generating an error signal in response to the controller determining a change of capacitance when the dielectric part is displaced relative to the print surface during the printing process. The printer further includes a display device electrically coupled to the controller and displaying an error message in response to the display device receiving the error signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.