Seiko Epson Corporation

Akihiko Tsunoya

Eiji Okamoto

Toshimitsu Hirai

Kaoru Momose

Masaya Ishida

Manabu Watanabe

Takeshi Miyashita

Naoyuki Toyoda

Hiroshi Wada

Naoko Shima

Koji Fujimori

Takayuki Yonemura

Keigo Sugai

Kazuhide Nakamura

Junichi Sano

Toshiyuki Kobayashi

Noboru Uehara

Yoshikazu Hama

Makoto Kato

Sachiko Endo

An injection-molded article of polymer piezoelectric material includes: a helical chiral polymer constituted by a polymer chain and having a unit cell with an a-axis, a b-axis, and a c-axis as crystal axes, wherein b-axis<a-axis<c-axis in terms of lengths of the crystal axes, the c-axis is parallel to a long chain direction of the polymer chain, the helical chiral polymer is a crystal in which the b-axis is uniaxially oriented, and the injection-molded article has piezoelectricity.

Injection-molded article of polymer piezoelectric material, piezoelectric element, apparatus for manufacturing injection-molded article of polymer piezoelectric material, and method for manufacturing injection-molded article of polymer piezoelectric material

A three-dimensional shaping device includes a stage having a shaping surface formed with a first, second, third, and fourth groove, a discharge unit configured to supply a shaping material to the shaping surface, a moving mechanism configured to relatively move the stage and the discharge unit, and a control unit configured to control the discharge unit and the moving mechanism. The control unit is configured to execute a control of forming a first shaping line in the first groove, a control of forming a second shaping line in the second groove, a control of forming a third shaping line in the third groove, a control of forming a fourth shaping line in the fourth groove, a control of forming a first floor layer that couples the first and second shaping lines, and a control of forming a second floor layer that couples the third and fourth shaping lines.

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 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.

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 production method for producing a product by joining a first part containing an inorganic powder and a binder to a second part containing an inorganic powder and a binder is provided. The production method includes a first step of forming the first part by a three-dimensional shaping apparatus, a second step of forming the second part, a third step of assembling the first part and the second part, thereby obtaining an assembly, a fourth step of heating the assembly at a first temperature, and a fifth step of heating the assembly at a second temperature higher than the first temperature after the fourth step, wherein the first part has a first region that comes in contact with the second part and a second region that does not come in contact with the second part, and a melting point of the binder contained in the first region is lower than a melting point of the binder contained in the second region.

Method for producing product

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 method for manufacturing a three-dimensional shaped object according to the present disclosure includes: a plasticizing step of plasticizing at least a part of a shaping material including a first fiber material and a thermoplastic resin to generate a plasticized material to be discharged from a nozzle opening for shaping a three-dimensional shaped object; a fiber introducing step including either a step of introducing a second fiber material longer than the first fiber material into the shaping material or the plasticized material before being discharged from the nozzle opening, or a step of introducing the second fiber material into the plasticized material after being discharged from the nozzle opening; and a shaping step of shaping the three-dimensional shaped object including the first fiber material and the second fiber material.

Method for manufacturing three-dimensional shaped object and three-dimensional shaping apparatus

A method for manufacturing a three-dimensional shaped object includes: a plasticizing step of plasticizing at least a part of a shaping material containing a thermoplastic resin to generate a plasticized material; a fiber introducing step including at least one of a step of introducing a covered fiber material, which is a fiber material covered with a covering material, into the plasticized material after being discharged from the nozzle opening, and a step of introducing the covered fiber material into the shaping material or the plasticized material before being discharged from the nozzle opening; and a shaping step of shaping a three-dimensional shaped object including the covered fiber material.

A three-dimensional shaping device includes: a stage whose shaping surface has a first groove and a second groove extending in a first direction; a discharge unit configured to supply a shaping material to the shaping surface; a movement mechanism configured to relatively move the stage and the discharge unit; and a control unit configured to control the discharge unit and the movement mechanism. The control unit is configured to control the movement mechanism and the discharge unit to: form a first girder layer by supplying the shaping material to the first groove while relatively moving the discharge unit in the first direction with respect to the stage, form a second girder layer by supplying the shaping material to the second groove while relatively moving the discharge unit in the first direction with respect to the stage, and form a first floor layer coupling the first girder layer and the second girder layer by supplying the shaping material to the shaping surface while relatively moving the discharge unit with respect to the stage.

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 three-dimensional shaping apparatus shapes a first shaped article by ejecting a material from an ejection section, forms a first portion of a second shaped article by adjusting an output of a temperature adjusting section while measuring a temperature of the first shaped article by a temperature sensor so that a viscosity of the first shaped article calculated based on the temperature of the first shaped article measured by the temperature sensor and first relational data representing a relationship between a temperature and a viscosity of the material becomes a predetermined viscosity or less, and ejecting the material from the ejection section, and forms a second portion that is a portion adjacent to the first portion of the second shaped article by ejecting the material from the ejection section while adjusting a temperature of the first portion by the temperature adjusting section with the adjusted output.

A three-dimensional shaped object manufacturing device includes a shaping table, layer forming portions configured to form a powder layer on the shaping table, a headconfigured to discharge, from a nozzle, a liquid containing a binder to a shaping region of a three-dimensional shaped object in the powder layer, and a control unit configured to control a movement of the head with respect to the shaping table and a drive of the head by applying a voltage, in which the control unit performs control to, after the liquid is discharged to the shaping region, execute a flushing operation of discharging the liquid from the nozzle to a flushing position different from the shaping region, and set an applied voltage during the flushing operation higher than an applied voltage when the liquid is discharged to the shaping region.

Three-dimensional shaped object manufacturing device

A method for manufacturing a three-dimensional shaped object includes a structure shaping step (step S) of shaping a structure with a shaping material including a metal powder or a ceramic powder, a support shaping step (step S) of shaping a support T that supports a structure S with a support material including a resin, and a deresining step (step S) of deresining the support T supporting the structure S.

Method for manufacturing three-dimensional shaped object

A three-dimensional shaped article production method is a three-dimensional shaped article production method for producing a three-dimensional shaped article by stacking layers and includes a first metal powder supply step of supplying a first metal powder having a first average particle diameter to a shaping table, a layer formation step of forming the layer by compressing the first metal powder supplied to the shaping table, a first liquid supply step of supplying a first liquid containing a binder and a second metal powder having a second average particle diameter that is an average particle diameter 1/10 or more and &#xbd; or less the first average particle diameter to at least a portion of a constituent region of the three-dimensional shaped article, a second liquid supply step of supplying a second liquid that contains a binder, but does not contain a metal powder to at least a portion of a surface layer region in the constituent region, and a sintering step of sintering a metal in the constituent region by heating a stacked body.

Three-dimensional shaped article production method

A three-dimensional shaping apparatus includes a plasticizing section that forms a plasticized material, a flow channel for the plasticized material, a nozzle having an ejection port, from which the plasticized material is ejected to a shaping region, a position changing mechanism that changes a relative position of the nozzle to the table, a pressure measurement section that measures a pressure in the flow channel, and a cleaning mechanism that is provided in a cleaning region different from the shaping region and cleans the ejection port, wherein a cleaning process for causing the cleaning mechanism to perform cleaning by suspending a shaping process in the middle of the shaping process, and moving the nozzle to the cleaning region is executed, and the shaping process is resumed when the pressure is measured to be a reference value or less by the pressure measurement section after executing the cleaning process.

Growing community of inventors

Okaya, Japan

Akihiko Tsunoya