公开(公告)号：US20240233364A1

公开(公告)日：2024-07-11

申请号：US18536656

申请日：2023-12-12

Applicant: SINTOKOGIO, LTD.

Inventor： Kazuya KOJIMA ,  Norihiro Asano

IPC: G06V10/98 ,  B28B17/00 ,  B29C64/393

CPC classification number: G06V10/993 ,  B28B17/0072 ,  B29C64/393 ,  B33Y50/02

Abstract: An abnormality determination device for an additive manufacturing apparatus for building a part having three-dimensional shape by repeatedly forming a membrane of raw material and forming a cured layer having two-dimensional shape, the membrane formed by a blade in a build area, the raw material including ceramic particles and photocurable resin, the cured layer formed by irradiating the membrane with light in the build area, the abnormality determination device includes a controller configured to perform abnormality determination based on an image captured by an image sensor, the controller is configured to acquire the image of the membrane captured by the image sensor, detect a linear abnormal portion appearing in the membrane as a line extending along a movement direction of the blade based on the acquired image of the membrane, and determine that layering fault has occurred in response to detection of the linear abnormal portion.

公开(公告)号：US20210086397A1

公开(公告)日：2021-03-25

申请号：US16970414

申请日：2019-01-18

Applicant: SINTOKOGIO, LTD.

Inventor： Norihiro ASANO ,  Norihito FUJIWARA ,  Kazuya KOJIMA

IPC: B28B1/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B28B11/24 ,  B33Y50/02 ,  B28B17/00 ,  B29C64/165 ,  B29C64/232 ,  B29C64/245 ,  B29C64/379 ,  B29C64/393

Abstract: A stage mechanism for use in an additive manufacturing device for forming a three-dimensional shaped object by stacking layers, which are formed by a layer forming unit, on a layer-by-layer basis, the stage mechanism including a porous plate configured to adhere a flexible sheet by vacuum suction and a base supporting the porous plate and having a space defined inside of the base, and an inlet port configured to connect the space and a decompression device, wherein the base moves up and down relative to the layer forming unit of the additive manufacturing device so that the shaped object is formed on the flexible sheet adhered, by vacuum suction, to the porous plate, and a pore diameter of the porous plate is less than the thickness of the flexible sheet.

公开(公告)号：US20200307079A1

公开(公告)日：2020-10-01

申请号：US16826930

申请日：2020-03-23

Applicant: SINTOKOGIO, LTD.

Inventor： Kouji KAJITA ,  Kazuya KOJIMA ,  Takaya NAKANE

IPC: B29C64/188 ,  B29C64/241 ,  B29C64/264 ,  B29C64/30 ,  B29C64/255

Abstract: An additive manufacturing apparatus includes a cylindrical rotating body, a rotation drive unit causing the rotating body to rotate around an axis of rotation, a supply unit provided above the rotating body and supplying slurry containing ultraviolet light curable resin to a top surface of the rotating body during rotation of the rotating body, a flattening unit provided above the rotating body, located downstream of the supply unit and flattening the slurry supplied to the top surface of the rotating body at an end portion thereof during rotation of the rotating body, a relative drive unit relatively moving the rotating body with respect to the supply unit and the flattening unit, and an irradiation unit provided above the rotating body, located downstream of the flattening unit in the rotating direction of the rotating body and performing spot-irradiation with ultraviolet light at an irradiation position during rotation of the rotating body.

公开(公告)号：US20220396029A1

公开(公告)日：2022-12-15

申请号：US17833991

申请日：2022-06-07

Applicant: SINTOKOGIO, LTD.

Inventor： Kouji KAJITA ,  Kazuya KOJIMA ,  Takaya NAKANE

IPC: B29C64/218 ,  B29C64/236 ,  B29C64/268 ,  B29C64/245 ,  B29C64/135 ,  B29C64/232

Abstract: An additive manufacturing apparatus configured to laminate a plurality of thin films to form a modeled object, the additive manufacturing apparatus including a stage; a roll coater, including a first roll and a second roll, configured to form each of the thin films, the thin film being made of a modeling material, the modeling material being a material of the modeled object; and a drive unit configured to move the roll coater on the stage, the roll coater: is arranged so that the second roll is located on the stage; passes the modeling material between a first roll surface of the first roll and a second roll surface of the second roll; and the drive unit moves the roll coater on the stage in a direction orthogonal to the second axis, and thereby laminates the thin film, formed on the second roll surface, onto the stage.

公开(公告)号：US20200307084A1

公开(公告)日：2020-10-01

申请号：US16825165

申请日：2020-03-20

Applicant: SINTOKOGIO, LTD.

Inventor： Kouji KAJITA ,  Kazuya KOJIMA ,  Takaya NAKANE

IPC: B29C64/241 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/135 ,  B29C64/268 ,  B29C64/245

Abstract: An additive manufacturing apparatus includes a rotating body including therein a space defined by an inner circumferential surface, a rotation drive unit causing the rotating body to rotate, a supply unit supplying slurry containing ultraviolet light curable resin to the inner circumferential surface, a first drive unit causing the supply unit to move in a radial direction of the rotating body, a flattening unit located downstream of the supply unit and flattening the slurry supplied to the inner circumferential surface of the rotating body at an end portion thereof during rotation of the rotating body to a thickness of one layer, a second drive unit causing the flattening unit to move along the radial direction of the rotating body, and an irradiation unit provided downstream of the flattening unit and spot-radiating ultraviolet light at an irradiation position determined based on a shape of the molded object.

公开(公告)号：US20200307078A1

公开(公告)日：2020-10-01

申请号：US16825440

申请日：2020-03-20

Applicant: SINTOKOGIO, LTD.

Inventor： Kouji KAJITA ,  Kazuya KOJIMA ,  Takaya NAKANE

IPC: B29C64/188 ,  B29C64/35 ,  B29C64/241 ,  B29C64/379

Abstract: An additive manufacturing system comprises an additive manufacturing apparatus forming a molded object by curing slurry which becomes a base material of the molded object and a removing apparatus removing slurry attached to the molded object, in which the removing apparatus comprises a container having an axis of rotation and a peripheral wall provided with a plurality of small holes, the container permitting the molded object to be fixed therein, and a drive unit driving the container to rotate around the axis of rotation.