公开(公告)号：US11938682B2

公开(公告)日：2024-03-26

申请号：US17291295

申请日：2019-10-25

Applicant: dp polar GmbH

Inventor： Hans Mathea

IPC: B29C64/40 ,  B29C64/336 ,  B29C64/35 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/10 ,  B29K29/00 ,  B29K33/00 ,  B29K63/00 ,  B29K86/00

CPC classification number: B29C64/40 ,  B29C64/336 ,  B29C64/35 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/10 ,  B29K2029/00 ,  B29K2033/08 ,  B29K2063/00 ,  B29K2086/00

Abstract: In a method for producing a three-dimensional mold and a three-dimensional shaped object by means of layer-by-layer material application, geometry data for the shaped object, a support part having a base surface for holding the three-dimensional shaped object, and a first and a second material that can be solidified are made available. In the solidified state, the second material includes at least one main component that can be cross-linked by means of treatment with energy, and a latent hardener that can be thermally activated, by means of which chemical cross-linking of the main component can be triggered by means of the effect of heat. To form a negative-shape layer, the first material is applied to the base surface and/or to a solidified material layer of the three-dimensional shaped object situated on this surface, in accordance with the geometry data, in such a manner that the negative-shape layer has at least one cavity that has a negative shape of a material layer of the shaped object to be produced. The negative-shape layer is solidified. To form a shaped-object layer, the cavity is filled with the second material, and afterward its main component is partially cross-linked by means of treatment with energy, and solidified. Regions of the solidified negative-shape layer and/or shaped-object layer that project beyond a plane arranged at a distance from the base surface are removed by means of material removal. The steps mentioned above are repeated at least once. The main component is further cross-linked by means of a heat treatment, and solidified in such a manner that the second material has a greater strength than the solidified first material and the second material after partial cross-linking. The negative-shape layers are removed from the shaped object.

公开(公告)号：US20230166443A1

公开(公告)日：2023-06-01

申请号：US18095895

申请日：2023-01-11

Applicant: dp polar GmbH ,  ALTANA AG

Inventor： Hans Mathea ,  Martin Bohn

IPC: B29C64/112 ,  B29C64/264 ,  B29C64/245 ,  B29C64/255 ,  B29C64/209 ,  B29C64/393 ,  B29C64/10 ,  B29C64/218

CPC classification number: B29C64/112 ,  B29C64/264 ,  B29C64/245 ,  B29C64/255 ,  B29C64/209 ,  B29C64/393 ,  B29C64/10 ,  B29C64/218 ,  B33Y10/00

Abstract: A device for producing a three-dimensional shaped object, including a substrate part having a base surface for holding the shaped object, a first reservoir for holding a flowable first material, a second reservoir for holding a flowable second material, a dispensing mechanism for dispensing material portions of the first material, a material application mechanism including an application roll and a coating mechanism for applying a second material layer of the second material, and a fixation mechanism for solidifying the material layers composed of the first material and the second material. The transfer body rotates about an axis of rotation disposed parallel to the base surface, the dispensing mechanism and the application roll r relative to the substrate part about an axis disposed normal to the base surface, the application roll is conical, and an axis of rotation of the application roll intersects the axis disposed normal to the base surface.

公开(公告)号：US20220194004A1

公开(公告)日：2022-06-23

申请号：US17604212

申请日：2020-04-16

Applicant: dp polar GmbH

Inventor： Hans Mathea

IPC: B29C64/277 ,  B33Y10/00 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/241 ,  B33Y30/00

Abstract: In a method for producing a solid-body layer, an emitter array is provided. A support is rotationally positioned relative to the emitter array, about an axis of rotation, and material portions of a material that passes through the nozzles are applied to the support and solidified. The center point of the emitter farthest away from the axis of rotation has a first radial distance, and the emitter arranged closest to the axis of rotation has a second radial distance from the axis of rotation. A trigger signal is generated, which defines trigger points. A material dispensing signal is generated and temporarily stored, in each instance, for the individual emitters, as a function of geometry data and/or as a function of the position in which the emitter in question is arranged relative to the support, when the emitter is positioned at the corresponding trigger point. The emitters are controlled at the trigger points in such a manner that only those emitters in which the material dispensing signal is set dispense material. The angle between trigger points that are adjacent to one another corresponds to the angle that a first and a second radial line enclose between them. The first radial line runs from the axis of rotation to the intersection point between a first emitter column and a reference circle line that is concentric to the axis of rotation. The second radial line runs from the axis of rotation to the intersection point between a second emitter column and the reference circle line. The radius of the reference circle line is less than the sum of 90% of the first and 10% of the second distance. The radius is greater than the sum of 10% of the first and 90% of the second distance.

公开(公告)号：US12042982B2

公开(公告)日：2024-07-23

申请号：US17267054

申请日：2019-08-12

Applicant: dp polar GmbH

Inventor： Hans Mathea

IPC: B29C64/112 ,  B29C64/188 ,  B29C64/209 ,  B29C64/214 ,  B29C64/268 ,  B29C64/314 ,  B29C64/336 ,  B29C64/343 ,  B29K101/12 ,  B29K105/00 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00

CPC classification number: B29C64/112 ,  B29C64/188 ,  B29C64/209 ,  B29C64/214 ,  B29C64/268 ,  B29C64/314 ,  B29C64/336 ,  B29C64/343 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00 ,  B29K2101/12 ,  B29K2105/007 ,  B29K2105/0094

Abstract: In a method for producing a three-dimensional mold and a three-dimensional shaped object (1) by means of layer-by-layer material application, geometry data for the shaped object (1), a support part (2) having a base surface (3) for holding the three-dimensional shaped object (1), and a first and a second material (4, 5) that can be solidified are made available. In the solidified state, the second material (5) has a greater strength than the solidified first material (4). The solidified first material (4) can dissolve in the solvent. To form a negative-shape layer (12), material portions of the flowable first material (4) are applied to the base surface (3) and/or to a solidified material layer of the three-dimensional shaped object (1) situated on this surface, in accordance with the geometry data, in such a manner that the negative-shape layer (12) has at least one cavity (13) that has a negative shape of a material layer of the shaped object (1) to be produced. The negative-shape layer (12) is solidified. To form a shaped-object layer (16), the cavity (13) is filled with the second material (5), and afterward the second material (5) is solidified. Regions of the solidified negative-shape layer (12) and/or shaped-object layer (16) that project beyond a plane arranged at a predetermined distance from the base surface (3) are removed by means of machining material removal. The steps mentioned above are repeated at least once. The negative-shape layers (12) are brought into contact with the solvent in such a manner that the solidified first material (4) dissolves in a solvent.

公开(公告)号：US20210299944A1

公开(公告)日：2021-09-30

申请号：US17267054

申请日：2019-08-12

Applicant: dp polar GmbH

Inventor： Hans Mathea

IPC: B29C64/112 ,  B29C64/188 ,  B29C64/214 ,  B29C64/268 ,  B29C64/343 ,  B29C64/314 ,  B29C64/209 ,  B29C64/336 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00

Abstract: In a method for producing a three-dimensional mold and a three-dimensional shaped object (1) by means of layer-by-layer material application, geometry data for the shaped object (1), a support part (2) having a base surface (3) for holding the three-dimensional shaped object (1), and a first and a second material (4, 5) that can be solidified are made available. In the solidified state, the second material (5) has a greater strength than the solidified first material (4). The solidified first material (4) can dissolve in the solvent. To form a negative-shape layer (12), material portions of the flowable first material (4) are applied to the base surface (3) and/or to a solidified material layer of the three-dimensional shaped object (1) situated on this surface, in accordance with the geometry data, in such a manner that the negative-shape layer (12) has at least one cavity (13) that has a negative shape of a material layer of the shaped object (1) to be produced. The negative-shape layer (12) is solidified. To form a shaped-object layer (16), the cavity (13) is filled with the second material (5), and afterward the second material (5) is solidified. Regions of the solidified negative-shape layer (12) and/or shaped-object layer (16) that project beyond a plane arranged at a predetermined distance from the base surface (3) are removed by means of machining material removal. The steps mentioned above are repeated at least once. The negative-shape layers (12) are brought into contact with the solvent in such a manner that the solidified first material (4) dissolves in a solvent.

公开(公告)号：US12138854B2

公开(公告)日：2024-11-12

申请号：US17800751

申请日：2021-02-19

Applicant: dp polar GmbH

Inventor： Hans Mathea

IPC: B29C64/153 ,  B29C64/218 ,  B29C64/40 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00 ,  B29K101/12 ,  B29K105/00

Abstract: In the case of a method for producing a three-dimensional shaped object by means of layer-by-layer material application, a base surface for holding the three-dimensional shaped object, a liquid, flowable or powder-form first material that can solidify, a powder-form second material including thermoplastic powder particles, and a solvent are made available. From the first material, a negative mold layer having a cavity for a shaped-object layer to be produced is produced and solidified. The bottom of the cavity is charged to an electric potential having a first polarity, and the powder particles are charged to a potential having a second polarity. The powder particles are applied to a support surface that is positioned relative to the cavity in such a manner that the powder particles are transferred from the support surface into the cavity and form a shaped-object layer having a positive shape that matches the negative mold in this cavity. The shaped-object layer is sintered by means of the effect of heat. A planar surface is produced by means of material removal, which surface extends over the negative mold layer and the shaped-object layer. The above steps are repeated at least once. Afterward the negative mold layers are dissolved in the solvent.

公开(公告)号：US11565461B2

公开(公告)日：2023-01-31

申请号：US16484969

申请日：2018-02-09

Applicant: dp polar GmbH ,  ALTANA AG

Inventor： Hans Mathea ,  Martin Bohn

IPC: B29C64/112 ,  B29C64/209 ,  B29C64/264 ,  B29C64/245 ,  B29C64/255 ,  B29C64/393 ,  B29C64/10 ,  B29C64/218 ,  B33Y70/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02

Abstract: The invention relates to a method for producing a three-dimensional shaped object without height limitation by means of layer-by-layer material application, wherein geometric data for the shaped object, a substrate part having a base surface for holding the shaped object, flowable first and second material, and a transfer body are provided. Material portions of the flowable first material are applied to the base surface and/or to a solidified material layer of the three-dimensional shaped object located on the base surface in accordance with the geometric data in order to produce a material layer of the three-dimensional shaped object. The material layer consisting of the first material is solidified. A surface region of the transfer body is coated with a layer of the second material, and said layer is brought into contact with the surface of the topmost solidified material layer of the three-dimensional shaped object facing away from the base surface in such a way that the flowable second material is transferred from the transfer body to the surface of the topmost solidified material layer of the three-dimensional shaped object and forms the further material layer on the surface of the topmost solidified material layer of the three-dimensional shaped object, the structure of which further layer corresponds to the structure of the topmost solidified material layer of the three-dimensional shaped object. The further material layer is likewise solidified.

公开(公告)号：US11155036B2

公开(公告)日：2021-10-26

申请号：US15573355

申请日：2016-05-10

Applicant: dp polar GmbH

Inventor： Hans Mathea

IPC: B29C64/112 ,  B33Y30/00 ,  B29C64/393 ,  B33Y50/02 ,  B33Y10/00 ,  B29C64/245 ,  B29C64/209 ,  B29C64/241 ,  G05B19/4099 ,  G06K9/62

Abstract: The invention relates to a device for applying flowable material to a substratum (3), which can be rotated about an axis of rotation (4), in accordance with specified image data, which are stored as pixels or as vectors of a certain Cartesian coordinate grid in a first memory (18), has at least one printing head (13A, 13B), which has a plurality of nozzles arranged at a nozzle distance from each other for discharging material drops of the flowable material and is arranged at a vertical distance from the substratum, and a controller (8) for positioning the substratum (3) in relation to the at least one printing head (13A, 13B) and the discharge of the material drops. In a second memory (19), particular polar coordinate grid points (20A, 20B) of a certain polar coordinate grid are stored, which polar coordinate grid points are arranged on circular lines (R1, R2) having a predetermined circular-line distance from each other and are arranged on first rays (A1), which have a first angular distance from each other and are arranged in the direction of origin on further rays (A2) having an angular distance from each other that is greater than the first angular distance. A computer (15) is present, by means of which the particular polar coordinate grid points (20A, 20B) stored in the second memory (19) can be transformed into coordinates of the certain Cartesian coordinate system and the Cartesian grid points thus obtained are compared with the pixels of the image file.

公开(公告)号：US11745411B2

公开(公告)日：2023-09-05

申请号：US18095895

申请日：2023-01-11

Applicant: dp polar GmbH ,  ALTANA AG

Inventor： Hans Mathea ,  Martin Bohn

IPC: B29C64/218 ,  B29C64/112 ,  B29C64/264 ,  B29C64/245 ,  B29C64/255 ,  B29C64/209 ,  B29C64/393 ,  B29C64/10 ,  B29C64/188 ,  B33Y70/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02

CPC classification number: B29C64/112 ,  B29C64/10 ,  B29C64/188 ,  B29C64/209 ,  B29C64/218 ,  B29C64/245 ,  B29C64/255 ,  B29C64/264 ,  B29C64/393 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02

Abstract: A device for producing a three-dimensional shaped object, including a substrate part having a base surface for holding the shaped object, a first reservoir for holding a flowable first material, a second reservoir for holding a flowable second material, a dispensing mechanism for dispensing material portions of the first material, a material application mechanism including an application roll and a coating mechanism for applying a second material layer of the second material, and a fixation mechanism for solidifying the material layers composed of the first material and the second material. The transfer body rotates about an axis of rotation disposed parallel to the base surface, the dispensing mechanism and the application roll r relative to the substrate part about an axis disposed normal to the base surface, the application roll is conical, and an axis of rotation of the application roll intersects the axis disposed normal to the base surface.

公开(公告)号：US11602901B2

公开(公告)日：2023-03-14

申请号：US17410218

申请日：2021-08-24

Applicant: dp polar GmbH

Inventor： Hans Mathea

IPC: B29C64/112 ,  B33Y10/00 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  G06V10/75 ,  B29C64/245 ,  B29C64/209 ,  B29C64/241 ,  G05B19/4099

Abstract: A device for applying flowable material to a substratum rotated about an axis of rotation, in accordance with image data stored as pixels or vectors of a Cartesian coordinate grid in a first memory, has at least one printing head for discharging material drops of the flowable material, and is arranged above the substratum, and a controller for positioning the substratum in relation to the printing head and controlling the discharge of the material drops. In a second memory, special polar coordinate grid points arranged on circular lines and on first rays having a first angular distance and, in the direction of origin, on further rays having an angular distance from each other that is greater than the first angular distance are stored. The special polar coordinate grid points are transformed into coordinates of the Cartesian coordinate system, and are compared with the pixels of the image file.