Seiko Epson Corporation

Future Vision Inc.

Toshimitsu Hirai

Eiji Okamoto

Katsuyuki Moriya

Shinri Sakai

Masaya Ishida

Akihiko Tsunoya

Hironori Hasei

Kaoru Momose

Hiroshi Wada

Hayato Nakanishi

Masahiro Furusawa

Kohei Ishida

Mitsuru Kuribayashi

Atsushi Denda

Toshiaki Mikoshiba

Koji Higuchi

Masato Mitsuhashi

Hidemasa Kanada

Mitsuhiro Isobe

Hiroshi Kiguchi

Manabu Watanabe

Toshihiro Ushiyama

Yoichi Noda

Yoshikazu Yoshimoto

Daiki Tokushima

Jun Yamada

Junichi Sano

Minoru Koyama

Tsuyoshi Shintate

Seigo Momose

Yasushi Takano

Takayuki Yokoyama

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.

Three-dimensional shaping device with nozzle flushing operation

A method of manufacturing a three-dimensionally formed object includes: forming a layer using a flowable composition including constituent material particles of a three-dimensionally formed object and a flowable composition including support portion-forming particles for forming a support portion which supports the three-dimensionally formed object during the formation of the three-dimensionally formed object; and imparting energy to the constituent material particles and the support portion-forming particles, in which in the imparting of the energy, the energy is imparted such that a temperature of the constituent material particles and a temperature of the support portion-forming particles are equal to or higher than a sintering temperature of the constituent material particles and are lower than a sintering temperature of the support portion-forming particles.

Method of manufacturing three-dimensionally formed object and three-dimensionally formed object manufacturing apparatus

A three-dimensional shaped article production method for producing a three-dimensional shaped article by stacking layers to form a stacked body includes a constituent layer formation step of forming a constituent layer which corresponds to a constituent region of the three-dimensional shaped article, a support layer formation step of forming a support layer which is in contact with the constituent layer and supports the constituent layer, and a sintering step of sintering the constituent layer, wherein the support layer is configured such that as compared with the volume decrement accompanying the sintering step of a space surrounded by the constituent layer from at least two directions, the volume decrement accompanying the sintering step of the support layer which supports the constituent layer in the space is larger.

Three-dimensional shaped article production method

A three-dimensional shaping device includes: an ejection head including a nozzle configured to eject a binder containing water, a water-soluble resin, and a wetting agent, an individual liquid chamber communicating with the nozzle, an inflow path configured to flow the binder into the individual liquid chamber, and an outflow path configured to flow the binder out of the individual liquid chamber; and a circulation flow path configured to circulate the binder flowing out of the outflow path to the inflow path.

Three-dimensional shaping device

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.

A three-dimensional shaped article production method for producing a three-dimensional shaped article by stacking layers to form a stacked body includes a first layer formation step of forming a first layer on a support by supplying a first composition containing first particles and a binder, a second layer formation step of forming a second layer composed of one layer or a plurality of layers on the first layer by supplying a second composition containing second particles and a binder, and a separation step of separating the second layer from the support through the first layer, wherein after the separation step, a sintering step of sintering the second layer is performed.

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.

Three-dimensional shaping apparatus

A method of manufacturing a three-dimensionally formed object includes: forming a layer using a flowable composition including constituent material particles of a three-dimensionally formed object and a flowable composition including support portion-forming particles for forming a support portion which supports the three-dimensionally formed object during the formation of the three-dimensionally formed object; and imparting energy to the constituent material particles and the support portion-forming particles, in which in the imparting of the energy, the energy is imparted such that a temperature of the constituent material particles and a temperature of the support portion-forming particles are equal to or higher than a melting point of the constituent material particles and are lower than a melting point of the support portion-forming particles.

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.

Three-dimensional shaped article production apparatus

A metal shaped article production method includes a shaping data input step, a step of forming a constituent material layer using a constituent material, a step of forming a support material layer using a support material, a step of cutting a cut face in the constituent material layer of a stacked body formed by performing the constituent material layer forming step and the support material layer forming step, a step of degreasing a thermoplastic resin contained in the stacked body for which the cut face cutting step was performed, and a step of sintering metal particles by heating the stacked body, wherein in the support material layer forming step, the support material layer is formed so that a support face comes into contact with a face to be supported at an opposite side to the cut face at a position of the constituent material layer based on the shaping data.

Metal shaped article production method

A manufacturing method for a three-dimensional structure includes forming unit layers using at least one of a first flowable composition including first powder and a second flowable composition including second powder and solidifying at least one of the first flowable composition including the first powder and the second flowable composition including the second powder in the unit layers. In the forming the unit layers, both of the first flowable composition and the second flowable composition are caused to be present in plane directions crossing a thickness direction of the unit layers.

Manufacturing method for three-dimensional structure, manufacturing apparatus for three-dimensional structure, and control program for manufacturing apparatus

A method of manufacturing a three-dimensionally formed object in which the three-dimensionally formed object is manufactured by laminating layers to forma laminate, includes: forming a constituent layer corresponding to a constituent region of the three-dimensionally formed object; forming a support layer which is in contact with the constituent layer and supports the constituent layer by ejecting a flowable composition including a resin from an ejecting portion in the form of liquid drops; solidifying the support layer; and heating the laminate which is formed in the formation of the constituent layer, the formation of the support layer, and the solidification of the support layer.

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Chino, Japan

Toshimitsu Hirai