公开(公告)号：US11969942B2

公开(公告)日：2024-04-30

申请号：US17431456

申请日：2020-02-28

Applicant: DENTSPLY SIRONA inc. ,  SIRONA DENTAL SYSTEMS GMBH

Inventor： Christian Schmidt ,  Thomas Hasenzahl

IPC: B29C64/25 ,  B29C64/129 ,  B29C64/255 ,  B29C64/264 ,  B29C64/295 ,  B29C64/35 ,  B29C64/371 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20

CPC classification number: B29C64/25 ,  B29C64/129 ,  B29C64/255 ,  B29C64/264 ,  B29C64/295 ,  B29C64/35 ,  B29C64/371 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20

Abstract: Component carrier for an additive manufacturing device, wherein the component carrier comprises a construction surface, on which a component to be manufactured is disposed during the operation of the manufacturing device, wherein the component carrier comprises a sealing surface which radially surrounds the construction surface, and method for post-processing a component manufactured according to an additive manufacturing process using such a component carrier.

公开(公告)号：US11780157B2

公开(公告)日：2023-10-10

申请号：US17280292

申请日：2019-10-01

Applicant: DENTSPLY SIRONA inc.

Inventor： Thomas Michalica ,  Thomas Hasenzahl ,  Christian Schmidt ,  Christian Stahl

IPC: B29C64/124 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/264 ,  B29C64/232 ,  B29C64/245 ,  B29C64/255 ,  B29C64/295 ,  G01F22/02

CPC classification number: B29C64/124 ,  B29C64/232 ,  B29C64/245 ,  B29C64/255 ,  B29C64/264 ,  B29C64/295 ,  B33Y10/00 ,  B33Y30/00 ,  G01F22/02

Abstract: Device for a system for layer-by-layer construction of a body (K) from a substance (S) which can be hardened by radiation, comprising a vat having a vat base for receiving the substance (S) which can be hardened by radiation, comprising a building platform which is arranged above the vat base and which is height-adjustable in relation to the vat base and comprising a sensor cooperating with the vat base, wherein the vat base is configured to be at least partially flexible, wherein a chamber is provided wherein the chamber is delimited by an underside of the vat base, wherein the sensor is adapted to detect a volume change of the chamber and to provide a sensor signal from which a sign of the volume change can be determined.

公开(公告)号：US12064918B2

公开(公告)日：2024-08-20

申请号：US17435597

申请日：2020-03-11

Applicant: DENTSPLY SIRONA inc.

Inventor： Thomas Hasenzahl

IPC: B29C64/124 ,  B29C64/30 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

CPC classification number: B29C64/124 ,  B29C64/30 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

Abstract: A stereolithography apparatus for generating a three-dimensional object from a photocurable substance, that includes: a vat for storing the photocurable substance; and a platform for supporting the three-dimensional object, wherein the platform is movable relative to the vat; an optical unit for sequentially projecting layered images towards the photocurable substance for hardening the photocurable substance deposited between the three-dimensional object and the bottom of the vat; and further includes: an oscillation unit adapted to horizontally oscillate the vat concomitantly with the projection of the layered images with a substantially constant amplitude that is smaller than the pixel size of the layered images in the horizontal direction for preventing adhesion of the three-dimensional object to the bottom of the vat.

公开(公告)号：US11884017B2

公开(公告)日：2024-01-30

申请号：US17431239

申请日：2020-02-25

Applicant: SIRONA DENTAL SYSTEMS GMBH ,  DENTSPLY SIRONA inc.

Inventor： Christian Schmidt ,  Thomas Hasenzahl ,  Michael Schwaiger ,  Markus Kuhnle ,  Andreas Ries ,  Torsten Richter

IPC: B29C64/255 ,  B33Y30/00 ,  B33Y50/00 ,  B29C64/314 ,  B29C64/343 ,  B29C64/386 ,  B33Y40/10 ,  G01F23/263

CPC classification number: B29C64/255 ,  B29C64/314 ,  B29C64/343 ,  B29C64/386 ,  B33Y30/00 ,  B33Y40/10 ,  B33Y50/00 ,  G01F23/263

Abstract: Material unit for an additive manufacturing device (AM) having a resin vat, wherein the resin vat comprises a base which is transparent at least in sections, wherein the resin vat is connected to a holder for a reservoir, and wherein the holder is configured such that resin (R) emerging from an outlet of a reservoir held by said holder can flow into the resin vat.