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公开(公告)号：US20230011696A1
公开(公告)日：2023-01-12
申请号：US17932379
申请日：2022-09-15
Applicant: SEIKO EPSON CORPORATION
Inventor： Manabu WATANABE , Toshimitsu HIRAI , Akihiko TSUNOYA , Kaoru MOMOSE
IPC: B29C64/314 , B29C64/165 , B29C64/209 , B29C64/386
Abstract: A three-dimensional shaped article production apparatus includes a shaping table, a layer forming section that forms a powder layer, a head that ejects a liquid containing a binder to a shaping region of a three-dimensional shaped article, a liquid supply system that supplies the liquid to the head, and a moving system that relatively moves the head with respect to the shaping table, wherein the head includes a nozzle that ejects the liquid, a pressure chamber that communicates with the nozzle, a supply flow channel that communicates with the pressure chamber upstream in a supply direction of the liquid, and a circulation flow channel that communicates with the pressure chamber downstream in the supply direction, the circulation flow channel includes a first filter, and a pore diameter of the first filter is larger than a particle diameter of a powder for forming the powder layer.
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Patent Agency Ranking
公开(公告)号：US20220024138A1
公开(公告)日：2022-01-27
申请号：US17381748
申请日：2021-07-21
Applicant: Seiko Epson Corporation
Inventor： Akihiko TSUNOYA , Toshimitsu HIRAI , Kaoru MOMOSE
IPC: B29C64/393 , B29C64/245 , B29C64/209 , B29C64/165 , B33Y30/00 , B33Y50/02
Abstract: A three-dimensional shaping device includes: a shaping table; a layer forming unit configured to form a powder layer on the shaping table; a head configured to eject a liquid containing a binder from a nozzle to a shaping region; and a control unit configured to control movement of the head with respect to the shaping table and driving of the head by applying a voltage. The control unit changes an execution condition of a flushing operation depending on whether an idle running time during which the head is moved without ejecting the liquid is less than a threshold value or equal to or greater than the threshold value.
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公开(公告)号：US20220032378A1
公开(公告)日：2022-02-03
申请号：US17387712
申请日：2021-07-28
Applicant: Seiko Epson Corporation
Inventor： Akihiko TSUNOYA , Toshimitsu HIRAI , Kaoru MOMOSE
Abstract: A three-dimensional shaping apparatus includes a shaping table, a layer forming section that forms a powder layer at the shaping table, a first head that ejects a liquid containing a binder to a shaping region from a first nozzle, a second head that ejects a liquid containing ceramic particles to a boundary region with respect to the shaping region from a second nozzle, and a control unit that controls movement of the first head and the second head with respect to the shaping table and driving of the first head and the second head by applying a voltage, wherein the control unit performs control so as to cause the first head to execute a first flushing operation and to cause the second head to execute a second flushing operation under a flushing condition different from that for the first flushing operation.
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公开(公告)号：US20220024137A1
公开(公告)日：2022-01-27
申请号：US17381742
申请日：2021-07-21
Applicant: Seiko Epson Corporation
Inventor： Akihiko TSUNOYA , Toshimitsu HIRAI , Kaoru MOMOSE
IPC: B29C64/393 , B33Y30/00 , B33Y50/02 , B28B1/00 , B28B17/00 , B29C64/209 , B22F10/85 , B22F12/53
Abstract: A three-dimensional shaping device includes: a shaping table; a layer forming unit configured to form a powder layer on the shaping table; a head configured to eject a liquid containing a binder from a nozzle to a shaping region; and a control unit configured to control movement of the head with respect to the shaping table and driving of the head by applying a voltage. The control unit executes a first flushing operation when an area of the shaping region is equal to or greater than the threshold value, and executes a second flushing operation when the area of the shaping region is less than the threshold value.
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公开(公告)号：US20220024133A1
公开(公告)日：2022-01-27
申请号：US17443039
申请日：2021-07-20
Applicant: SEIKO EPSON CORPORATION
Inventor： Akihiko TSUNOYA , Kaoru MOMOSE , Toshimitsu HIRAI
IPC: B29C64/35 , B29C64/165 , B29C64/227 , B29C64/209
Abstract: A three-dimensional shaping device includes: a shaping table; a layer forming unit configured to form a powder layer on the shaping table; a head configured to eject a liquid containing a binder from a nozzle to a shaping region; and a control unit configured to control movement of the head with respect to the shaping table and driving of the head by applying a voltage. The control unit executes a first flushing operation when a distance between the shaping region and the flushing position is less than a threshold value, and executes a second flushing operation when the distance between the shaping region and the flushing position is equal to or greater than the threshold value.
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公开(公告)号：US20210362418A1
公开(公告)日：2021-11-25
申请号：US17324530
申请日：2021-05-19
Applicant: SEIKO EPSON CORPORATION
Inventor： Manabu WATANABE , Toshimitsu HIRAI , Akihiko TSUNOYA , Kaoru MOMOSE
IPC: B29C64/314 , B29C64/165 , B29C64/209 , B29C64/386
Abstract: A three-dimensional shaped article production apparatus includes a shaping table, a layer forming section that forms a powder layer, a head that ejects a liquid containing a binder to a shaping region of a three-dimensional shaped article, a liquid supply system that supplies the liquid to the head, and a moving system that relatively moves the head with respect to the shaping table, wherein the head includes a nozzle that ejects the liquid, a pressure chamber that communicates with the nozzle, a supply flow channel that communicates with the pressure chamber upstream in a supply direction of the liquid, and a circulation flow channel that communicates with the pressure chamber downstream in the supply direction, the circulation flow channel includes a first filter, and a pore diameter of the first filter is larger than a particle diameter of a powder for forming the powder layer.
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