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.

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.

Abstract: A three-dimensional shaping apparatus includes a nozzle having a flow channel, through which a shaping material flows, and an ejection port, which communicates with the flow channel, and from which the shaping material is ejected toward a table, a position changing mechanism that changes a relative position of the nozzle to the table, a pressure measurement section that measures a pressure in a moving path of the shaping material, a cleaning mechanism that cleans the ejection port, and a control unit that controls the nozzle and the position changing mechanism and executes a shaping process for shaping a three-dimensional shaped article by stacking layers of the shaping material at the table, wherein the control unit executes a cleaning process for causing the cleaning mechanism to clean the nozzle by suspending the shaping process when the pressure measured by the pressure measurement section during execution of the shaping process is a first reference value or more.

Abstract: 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.

Abstract: A fluid-material-dispensing-apparatus includes a setting section of a cartridge containing a fluid material, a material chamber to which the fluid material is supplied, a valve seat constituting a part of the material chamber and including a dispensing port, a piston configured to move inside the material chamber in a direction toward or away from the dispensing port, and a drive unit for the piston. The cartridge is detachable, and a plurality of cartridges respectively containing different fluid materials can be employed. At least one of the valve seat and the piston is detachable, and a plurality of detachable members respectively having different structures can be employed. The detachable members each include a structure information provider of a corresponding structure. The fluid-material-dispensing-apparatus includes an information reader that reads information from a material information provider, and the structure information provider.

Abstract: A method for producing a three-dimensional shaped article by stacking a plurality of layers is provided, and is characterized in that a series of steps including a layer forming step of forming the layer using a composition containing a plurality of particles, and a joining step of joining the particles contained in the layer to one another by irradiating the layer with a laser beam is repeatedly performed, an average particle diameter of the particles is represented by D50 and a thickness of the layer formed in the layer forming step is represented by Ds, a relation of Ds/D50<5.0 is satisfied, and an arithmetic average height Sa of a surface of the layer in a state where the particles are joined to one another by the joining step is 15 ?m or less.

Abstract: A three-dimensional shaping method includes a molded body forming step of forming a molded body having a plurality of projection portions using a material containing a powder and a binder, a supporting step of supporting the molded body by a support having groove portions at positions configured to insert each of the projection portions in a state where the plurality of projection portions are inserted into the groove portions, and a sintering step of sintering the powder by heating the molded body in a state of being supported by the support, wherein the groove portion is extended from an insertion position of the projection portion in a specified direction that specifies a direction of shrinkage of the molded body by performing the sintering step.

Abstract: A three-dimensional shaping device that shapes a three-dimensional shaped object by stacking a layer includes: a shaping table on which the three-dimensional shaped object and a quality control shaped object are shaped; an injecting unit configured to inject a shaping material of the three-dimensional shaped object and the quality control shaped object; a moving mechanism configured to move the shaping table and the injecting unit relatively to each other; monitoring units configured to monitor a shaping state of the quality control shaped object; and a control unit configured to control the injecting unit, the moving mechanism, and the monitoring units to form the layer. The injecting unit injects, onto the shaping table, the solid shaping material heated into a plasticized state under the control of the control unit, and the control unit forms the layer based on monitoring results of the monitoring units.

Abstract: Provided is a three-dimensional shaping apparatus in which surface of a three-dimensional shaped object can be prevented from being roughened. The three-dimensional shaping apparatus that shapes a three-dimensional shaped object by stacking layers of a material includes: a stage; a discharge unit that has a nozzle surface in which a nozzle hole is formed; a moving unit that is configured to change a relative position between the stage and the nozzle surface; and a control unit that is configured to control the moving unit. The control unit drives the moving unit such that a relation between a gap G between the nozzle surface and the stage or the layer of the material when the material is discharged from the discharge unit and an outer diameter Dp of the nozzle surface satisfies a following relation (1). Dp×20×G+0.

Abstract: A three-dimensional modeling apparatus includes a plurality of ejection sections that eject shaping material on the basis of shaping data, a detection section detecting an ejection state of the shaping material from the ejection section, a maintenance section that performs maintenance of the ejection section, and a control section that controls the ejection section, the detection section, and the maintenance section, in which, when the detection section detects an ejection abnormality of the shaping material in any of the ejection sections, the control section causes the maintenance section to perform the maintenance of the ejection section in which the ejection abnormality is detected, regenerates the shaping data, and causes the ejection section in which the ejection abnormality is not detected to eject the shaping material at a position where the shaping material is to be ejected from the ejection section in which the ejection abnormality is detected.

Abstract: Provided is a method for producing a three-dimensional shaped article in which the three-dimensional shaped article is produced by stacking a plurality of layers, and the method includes a layer formation step of forming layers by using a composition that contains a powder, a solvent, and a binder which constitute the three-dimensional shaped article, a solvent removal step of removing the solvent contained in the layers, a thermal treatment step of applying heat at a temperature equal to or higher than a glass transition temperature of the binder to the layers obtained by performing the layer formation step and the solvent removal step, and a heating step of carrying out at least one of degreasing and sintering with respect to a stack of the three-dimensional shaped article that has been thermally treated in the thermal treatment step.

Abstract: A production method of a three-dimensionally shaped object, includes a first layer forming step of forming a first layer by using a first composition containing first powder and binder, a second layer forming step of forming a second layer by using a second composition containing second powder, third powder, and binder, and a sintering step of sintering the first powder and the second powder. In a case where the first powder and the second powder are of the same material, difference in a contraction rate between the first layer and the second layer in the sintering step is reduced by matching a filling rate of the first powder in the first composition with a total filling rate of the second powder and the third powder in the second composition and matching an average particle diameter of the first powder with an average particle diameter of the second powder.

Abstract: In a three-dimensional shaped object manufacturing device, when a unit is moved in a forward direction, powder is supplied from a first supply portion, a powder layer is formed by a first layer forming portion, a liquid is discharged to a shaping region from a head, and a shaping table is moved in a direction separating from the unit after discharging the liquid is ended and before a second layer forming portion faces the shaping region, and when the unit is moved in a backward direction, the powder is supplied from a second supply portion, the powder layer is formed by the second layer forming portion, the liquid is discharged to the shaping region from the head, and the shaping table is moved in the direction separating from the unit after discharging the liquid to the shaping region is ended and before the first layer forming portion faces the shaping region.

Abstract: 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 head 3 configured 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.

Abstract: In a three-dimensional shaped object manufacturing device, when a unit is moved in a forward direction, powder is supplied from a first supply portion, a powder layer is formed by a first layer forming portion, a liquid is discharged to a shaping region from a head, and a second layer forming portion is moved in a direction separating from a shaping table before the second layer forming portion faces the shaping region, and when the unit is moved in a backward direction, the powder is supplied from a second supply portion, the powder layer is formed by the second layer forming portion, the liquid is discharged to the shaping region P from the head, and a first layer forming portion is moved in a direction separating from the shaping table before the first layer forming portion faces the shaping region.

Abstract: A method for manufacturing a three-dimensional shaped object includes a structure shaping step (step S140) of shaping a structure with a shaping material including a metal powder or a ceramic powder, a support shaping step (step S130) of shaping a support T that supports a structure S with a support material including a resin, and a deresining step (step S210) of deresining the support T supporting the structure S.

Abstract: A method for manufacturing a three-dimensional shaped object includes a structure shaping step of supplying a shaping material including metal powder or ceramic powder, and supplying a binder to a region corresponding to a structure S of the three-dimensional shaped object to be shaped in the shaping material (step S140), a support shaping step of shaping, with a support material including a resin, a support T supporting the structure S (step S130), and a degreasing step of degreasing the support T and the binder, the support T being in a state of supporting the structure S (step S200).

Abstract: 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 ½ 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

Abstract: 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 second metal powder having a second average particle diameter and a binder to a portion of a constituent region of the three-dimensional shaped article, a second liquid supply step of supplying a second liquid containing at least either the second meal powder at a lower concentration than the first liquid or a third metal powder having a larger average particle diameter than the second average particle diameter and containing a binder to at least a portion of a surface layer region, and a sintering step of sintering a m

Abstract: A three-dimensional modeling apparatus includes a modeling portion that models a three-dimensional object by laminating material layers formed by a material having a fluid property, and executes a first modeling process that forms concave portions, which are adjacent to two or more convex portions and are recessed in comparison with the convex portions in a lamination direction in which material layers are laminated, as a result of forming a plurality of convex portions that project in the lamination direction, a second modeling process that laminates a material layer on the convex portions, and forms a material layer, which is spatially separated from the material layer laminated on the convex portions, inside the concave portions, and a third modeling process that fills the concave portions with a material layer by disposing the material on the material layer inside the concave portions.