JP2015214045A - Three-dimensional molding device, method for controlling three-dimensional molding device, and method for manufacturing three-dimensional article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a three-dimensional molding device in which strength of a three-dimensional article is ensured regardless of a deposition direction of layers in a process of depositing layers to form the three-dimensional article, and the article can be safely taken out.SOLUTION: A 3D printer is provided, which molds a three-dimensional article by supplying a powder material in a planar state to deposit in a vertical direction and discharging a binder liquid for solidifying the powder material to the supplied powder material so as to solidify the powder material to stack layers of the molding material. The device includes: a molding stage 111 where the powder material is supplied into a planar state; and a mesh 114 which is disposed on the molding stage 111 prior to supplying the powder material for forming a three-dimensional article and which has openings where the powder material not solidified can pass through. After layers of the molding material are stacked to form the three-dimensional article, the mesh 114 is separated from the molding stage 111 so as to take out the three-dimensional article embedded in the powder material not solidified.

Description

  The present invention relates to a three-dimensional modeling apparatus, a method for controlling a three-dimensional modeling apparatus, and a method for manufacturing a three-dimensional object, and more particularly, to taking out a three-dimensional object formed in a state of being buried in powder.

  In recent years, a technique called three-dimensional molding has been used in the field of rapid prototyping and the like. The three-dimensional object obtained by such three-dimensional molding is often used as a prototype or an exhibition for evaluating the appearance and performance of the final product in the product development stage.

  As one of such three-dimensional molding techniques, there is known a laminating method for forming a target three-dimensional object by shaping and laminating a shape obtained by cutting a three-dimensional object into round pieces. And as one of the apparatuses using such a lamination method, a layer is formed by supplying a molding material such as powder to a position corresponding to a molding part and supplying a liquid for solidifying the molding material later. A powder deposition modeling printer is known (see, for example, Patent Document 1).

  In such a powder deposition modeling printer, the target three-dimensional object is formed in a state of being buried in an uncured powder material, and thus the visibility of the three-dimensional object after completion is poor. In order to prevent breakage of such a three-dimensional object with poor visibility, a method of providing a suction hole for sucking the powder material and performing powder removal using suction, sonic vibration, and wind pressure has been proposed (for example, Patent Document 2).

  In the case of the method disclosed in Patent Document 2, it is necessary to provide a suction hole for sucking the powder material. If the powder material falls into the suction holes in the process of forming the three-dimensional object, the filling state of the supplied powder material may change, and the three-dimensional object being formed may be misaligned.

  The present invention has been made to solve such problems, and in the case of forming a three-dimensional object by laminating layers obtained by selectively solidifying a powder material, a problem occurs in the formation of the three-dimensional object. It is an object to enable a safe removal of a three-dimensional object after formation of the three-dimensional object without causing it.

  In order to solve the above problems, according to one embodiment of the present invention, a planar powder material is supplied so as to be deposited in a vertical direction, and a coagulating liquid for solidifying the powder material is supplied to the supplied powder material. A solid modeling apparatus that forms a solid object by solidifying the powder material by laminating the powder material and laminating a layer of a molding material, the modeling stage in which the powder material is supplied in a planar shape, and the solid A fishing member disposed on the modeling stage before the powder material for forming an object is supplied and provided with an opening through which the powder material in a non-solidified state can pass. After the layers are stacked to form a three-dimensional object, the three-dimensional object embedded in the powder material in a non-solidified state is taken out by separating the fishing member from the modeling stage. The features.

  According to the present invention, in the case of forming a three-dimensional object by laminating layers in which powder material is selectively solidified, the three-dimensional object after the three-dimensional object formation is safe without causing a problem in the formation of the three-dimensional object. Removal is possible.

It is a block diagram which shows the hardware constitutions of 3D printer which concerns on embodiment of this invention. 1 is a perspective view illustrating a configuration of a 3D printer according to an embodiment of the present invention. It is a figure which shows the aspect of the powder supply which concerns on embodiment of this invention. It is a figure which shows arrangement | positioning of the mesh which concerns on embodiment of this invention. It is a figure which shows arrangement | positioning of the mesh which concerns on embodiment of this invention. It is a figure which shows the fishing aspect of the solid object by the mesh which concerns on embodiment of this invention. It is a block diagram which shows the function structure of the 3D printer which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the 3D printer which concerns on embodiment of this invention. It is a figure which shows the suction | inhalation aspect of the powder material which concerns on embodiment of this invention. It is a figure which shows the aspect of blowing off of the powder material which concerns on embodiment of this invention. It is a flowchart which shows the example of the raising operation | movement of the mesh which concerns on embodiment of this invention. It is a flowchart which shows the example of the operation | movement which speaks the mesh and modeling stage which concern on embodiment of this invention. It is a flowchart which shows the burying operation | movement to the powder material of the mesh which concerns on embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, 3D data indicating the shape of a three-dimensional object such as CAD (Computer Aided Design) data is received, and a three-dimensional object is deposited by depositing a layer obtained by selectively curing a powder material supplied in a planar shape. A 3D printer which is a three-dimensional modeling apparatus to be formed will be described as an example. In such a 3D printer, taking out the three-dimensional object embedded in the uncured powder material after the formation of the three-dimensional object is one of the gist according to the present embodiment.

  FIG. 1 is a block diagram illustrating a hardware configuration of the 3D printer 1 according to the present embodiment. As shown in FIG. 1, the 3D printer 1 according to the present embodiment includes the same configuration as a general information processing apparatus. That is, the 3D printer 1 according to the present embodiment has a CPU (Central Processing Unit) 10, a RAM (Random Access Memory) 20, a ROM (Read Only Memory) 30, an HDD (Hard Disk Drive) 40, and an I / F 50. Connected through. Further, an LCD (Liquid Crystal Display) 60 and an operation unit 70 are connected to the I / F 50.

  The CPU 10 is a calculation means and controls the operation of the entire 3D printer 1. The RAM 20 is a volatile storage medium capable of reading and writing information at high speed, and is used as a work area when the CPU 10 processes information. The ROM 30 is a read-only nonvolatile storage medium and stores a program such as firmware. The HDD 40 is a non-volatile storage medium that can read and write information, and stores an OS (Operating System), various control programs, application programs, and the like.

  The I / F 50 connects and controls the bus 80 and various hardware and networks. The LCD 60 is a visual user interface for the user to check the state of the 3D printer 1. The operation unit 70 is a user interface for the user to input information to the 3D printer 1 and is realized by a touch panel, a hard key, or the like.

  In such a hardware configuration, the software control unit is configured by the CPU 10 performing calculations according to a program stored in the ROM 30 or a program loaded into the RAM 20 from a storage medium such as the HDD 40 or an optical disk (not shown). A functional block for realizing the functions of the 3D printer 1 according to the present embodiment is configured by a combination of the software control unit configured in this way and hardware.

  In addition to the configuration for the information processing function as shown in FIG. 1, the 3D printer 1 includes a hardware engine for performing three-dimensional modeling. The configuration of the hardware engine of the 3D printer 1 will be described with reference to FIG. The 3D printer 1 according to this embodiment is arranged adjacent to the modeling stage 111 to supply a powder material on the modeling stage 111 for stacking molding materials to form a three-dimensional object. Supply stage 112, recoater 113 for supplying the powder material on the supply stage 112 to the modeling stage 111 side, and IJ (InkJet) head 101 for discharging a binder liquid for solidifying the powder material supplied to the modeling stage 111 side And an arm 102 that supports the IJ head 101 and moves the IJ head 101 in a space on the modeling stage 111.

  The 3D printer 1 discharges a binder liquid from the IJ head 101 in accordance with a ring image generated by horizontally cutting a three-dimensional shape of a target three-dimensional object that is a modeling target, and is supplied onto the modeling stage 111 One layer of molding is performed by solidifying the material, and three-dimensional modeling is performed by stacking such layers. With reference to Fig.3 (a)-(g), the shaping | molding operation | movement for one layer which concerns on this embodiment is demonstrated.

  As shown in FIG. 3A, powder material is accommodated on the supply stage 112. That is, the supply stage 112 and the surrounding casing constitute a storage portion that stores the powder material. The recoater 113 moves and pushes the powder material loaded on the supply stage 112 to the modeling stage 111 side, so that one layer of powder material is supplied onto the modeling stage 111 as shown in FIG. That is, the recoater 113 functions as a supply unit.

  When the powder material is supplied onto the modeling stage 111 as shown in FIG. 3 (b), the binder liquid is discharged from the IJ head 101 to a position corresponding to the sliced image data as shown in FIG. 3 (c). Is done. The binder liquid is a coagulating liquid for coagulating the powder material. As a result, as shown in FIG. 3D, the portion of the powder material from which the binder liquid has been discharged is selectively solidified according to the circular image data.

  When the molding for one layer is completed as shown in FIG. 3 (d), the height of the modeling stage 111 and the supply stage 112 is adjusted as shown in FIG. 3 (e), and the recoater 113 is moved again, As shown in FIG. 3 (f), the powder material for the new layer is supplied vertically above the layer that has already been formed. By repeating such an operation, the molding layer in which the powder material is solidified is laminated, and three-dimensional molding is performed. As a result, as shown in FIG. 3G, the target three-dimensional object is formed in a state of being buried in an uncured powder material that has not been solidified.

  When the completed three-dimensional object is taken out from the 3D printer 1, the three-dimensional object is poorly visible because the three-dimensional object is buried in the powder material as shown in FIG. 3 (g). It may be damaged. In the 3D printer 1 according to the present embodiment, in order to avoid such an adverse effect and take out the three-dimensional object, as shown in FIG. 3G, the powder material passes through the three-dimensional object embedded in the powder material. And supported by a mesh having a roughness of.

  FIG. 4 is a diagram illustrating a state illustrated in FIG. 3A, that is, a state where a powder material is not yet supplied onto the modeling stage 111. As shown in FIG. 4, the 3D printer 1 according to the present embodiment includes a mesh 114 having an area substantially the same as the area of the modeling stage 111. The mesh 114 is arranged on the modeling stage 111 in a state where the powder material used for forming the three-dimensional object is not yet supplied on the modeling stage 111. Wires 115a, 115b, 115c, and 115d, which are ropes, are connected to the mesh 114, and the wires 115a, 115b, 115c, and 115d are bridged over pulleys 116a, 116b, 116c, and 116d, respectively.

  FIG. 5 is a diagram illustrating a case where the process illustrated in FIGS. 3A to 3F is repeated from the state illustrated in FIG. 4 to reach the state illustrated in FIG. As shown in FIG. 5, the mesh 114 enters the powder material P supplied on the modeling stage 111 and vertically below the three-dimensional object O formed inside the powder material P. The mesh 114 is raised by pulling the wire from the state shown in FIG.

  When the mesh 114 rises, the mesh 114 has a roughness that the uncured powder material passes through, so that only the three-dimensional object is supported by the mesh 114 and rises, and as shown in FIG. It is taken out from inside. With such a configuration, in the 3D printer 1 according to the present embodiment, a three-dimensional object formed in a state of being buried in a powder material can be taken out without being damaged.

  In the present embodiment, a mesh 114, which is a net-like member, will be described as an example of a fishing member for fishing a formed three-dimensional object, but this is only an example. The purpose of this case is to pick up a solid object by a member through which the solidified powder material can pass and the formed solid object cannot pass. It can be adopted regardless of the member. However, only a three-dimensional object can be picked up more efficiently by a net-like member, most of which is an opening.

  Next, a control configuration of the 3D printer 1 according to the present embodiment will be described with reference to FIG. As shown in FIG. 5, the 3D printer 1 according to this embodiment includes the wire described in FIGS. 4 to 6 in addition to the powder supply unit 110, the IJ head 101, and the arm 102 configured by the supply stage 112 and the recoater 113. A wire motor 130 for winding up 115a, 115b, 115c, 115d and a controller 120 for controlling them are included.

  As shown in FIG. 7, the controller 120 includes a main control unit 121, a network control unit 122, a powder supply unit driver 123 and an IJ head driver 124, an arm driver 125, and a wire motor driver 126. The main control unit 121 is a control unit that controls the entire controller 120, and is configured by the CPU 10 performing calculations in accordance with the OS and application programs.

  The network control unit 122 is an interface for the 3D printer 1 to exchange information with other devices, and uses an Ethernet (registered trademark) or a USB (Universal Serial Bus) interface. The network control unit 122 receives a job for causing the 3D printer 1 to perform 3D modeling and inputs the job to the main control unit 121.

  The powder supply unit driver 123 is driver software for driving and controlling the powder supply unit 110, and is good for driving and controlling the powder supply unit 110 according to the control of the main control unit 121. FIGS. The operation described in the above is realized. The drive control of the powder supply unit driver 123 includes ascent and descent control of the modeling stage 111 and the supply stage 112 and rotation and movement control of the recoater 113.

  The IJ head driver 124 is driver software for driving and controlling the IJ head 101. By driving and controlling the IJ head 101 according to the control of the main control unit 121, the IJ head 101 as described in FIG. The binder liquid is discharged from the nozzle. The arm driver 125 is driver software for controlling the driving of the arm 102, and controls the driving of the arm 102 according to the control of the main control unit 121. As a result, the arm 102 moves the IJ head 101 on the modeling stage 111.

  The wire motor driver 126 is driver software for controlling the drive of the wire motor 130. By controlling the drive of the wire motor 130 according to the control of the main control unit 121, the wire motor driver 126 of the mesh 114 as described in FIGS. Realize fishing.

  Next, the operation of the 3D printer 1 according to the present embodiment will be described with reference to FIG. In the three-dimensional modeling by the 3D printer 1, first, a process for filling the mesh 114 with a powder material is performed. Therefore, the main control unit 121 controls the powder supply unit driver 123 and the wire motor driver 126 to adjust the height of the modeling stage 111, the supply stage 112, and the mesh 114 (S801). In S801, the main control unit 121 lowers the modeling stage 111 and the mesh 114 by about 0.5 mm and raises the supply stage 112 by about 0.5 mm, for example.

  When the height adjustment is completed, the main control unit 121 controls the powder supply unit driver 123 to start the rotation of the recoater 113 and move the recoater as shown in the unit 3 (b) to place the recoater on the supply stage 112. A fixed amount of powder material is supplied to the modeling stage 111 side (S802). The main control unit 121 repeats the processing of S801 and S802 by a predetermined height (S803 / NO), and supplies the powder material to the extent that the mesh 114 is filled to the modeling stage 111 side.

  By repeating the processes of S801 and S802, a powder material of a predetermined height is supplied to the modeling stage 111 side, and the mesh 114 arranged on the modeling stage 111 is buried in the powder material. Thereby, it can prevent that the solid thing and mesh 114 which are formed on the modeling stage 111 contact and solidify.

  When the repetition for the predetermined height is completed (S803 / YES), the main control unit 121 proceeds to a solid object modeling process. In the three-dimensional object modeling process, the main control unit 121 controls the powder supply unit driver 123 and the wire motor driver 126 in the same manner as in S801, as described in FIGS. The height of the supply stage 112 and the mesh 114 is adjusted (S804). In step S804, the main control unit 121 adjusts the height of one layer of the powder material, for example, a height of about 0.3 mm.

  When the height adjustment is completed, the main control unit 121 controls the powder supply unit driver 123 to drive the recoater 113 to supply a predetermined amount of powder material on the supply stage 112 to the modeling stage 111 side (S805). When the powder material is supplied, the main control unit 121 controls the arm driver 125 to move the position of the IJ head 101 by driving the arm, and controls the IJ head driver 124 to control the three-dimensional image based on the sliced image. The binder liquid is discharged to a part that becomes a part of the object (S806).

  Through the processes of S804 to S806, as shown in FIG. 3D, the modeling process for one layer is completed. The main control unit 121 repeats the processing from S804 until the 3D modeling related to the job received by the 3D printer 1 is completed (S807 / NO). Thereby, as shown in FIG.3 (g), it shape | molds in the state which the target solid thing was buried in the powder material.

  When the modeling is completed (S807 / YES), the main control unit 121 controls the powder supply unit driver 123 to stop the rotation of the recoater (S808). Then, the main control unit 121 controls the wire motor driver 126 to drive the wire motor 130, thereby winding the wires 115a, 115b, 115c, and 115d and raising the mesh 114 (S809).

  In S809, the height at which the mesh 114 is raised is at least the height at which the modeling stage 111 is processed. Therefore, when repeating the processes of S804 to S806, the main control unit 121 accumulates the heights at which the modeling stage 111 is lowered, and performs the process of S809 according to the accumulation result.

  When the three-dimensional object is taken out from the powder material by raising the mesh 114, the main control unit 121 controls the powder supply unit driver 123 to further lower the modeling stage 111 as shown in FIG. 9 and remain on the modeling stage 111. The powdered material is sucked from the suction port (S810). The suction port shown in FIG. 9 is provided further below the height at which the modeling stage 111 is arranged when three-dimensional modeling is performed. That is, since the powder material supplied onto the modeling stage 111 does not fall into the suction port during the execution of the three-dimensional modeling, the powder material moves during the execution of the three-dimensional modeling, and the positional displacement occurs in the three-dimensional modeled object. Can be prevented. The powder material sucked from the suction port is reused.

  When the suction of the powder material is completed, the main control unit 121 controls the wire motor driver 126 to lower the mesh 114 again and return it to the modeling stage 111, and send the wind onto the modeling stage 111. The powder material adhering to the object is blown off (S811). The wind sent in S811 can be sent from, for example, the suction port shown in FIG. Thereby, it becomes possible to automatically remove the powder material remaining on the surface of the three-dimensional object.

  By such processing, the three-dimensional modeling operation according to the present embodiment is completed. In the 3D printer 1 according to the present embodiment, the three-dimensional object is picked up by the mesh 114 arranged on the modeling stage 111 before the three-dimensional modeling is started. It is possible to take out without doing. In addition, unlike the case where the powder material is automatically sucked, it is not necessary to provide an opening that causes the positional displacement of the powder material during the execution of the three-dimensional modeling, which causes a problem in the modeling of the three-dimensional object. There is no.

  In addition, it becomes possible to perform the removal of the powder material from the formed solid object more effectively by adding a special process when raising the mesh 114 of S809. For example, after the mesh 114 is raised and the three-dimensional object is taken out from the powder material, the main control unit 121 controls the wire motor driver 126 to perform the minute winding and unwinding of the wires 115a, 115b, 115c, and 115d at a high speed. By repeating, the three-dimensional object picked up by the mesh 114 may be vibrated. Thereby, the powder material adhering to the three-dimensional object is shaken off.

  The winding and feeding amount when the minute winding and feeding of the wires 115a, 115b, 115c, and 115d are repeated at a high speed is 0.1 mm, for example, but any value may be set by the user.

  Moreover, it is possible to shake off the powder material adhering to the three-dimensional object also by performing a special process when raising the mesh 114. FIG. 11 is a flowchart showing details of the processing in S809. As shown in FIG. 11, the main control unit 121 controls the wire motor driver 126 to raise the four wires in order by a predetermined height (S1101 to 1104).

  By the processing of S1101 to S1104, the four corners of the mesh 114 rise in order, and the three-dimensional object picked up by the mesh 114 rises while tilting. As a result, the powder material adhering to the three-dimensional object is shaken off. The main control unit 121 repeats the processing of S1101 to S1104 for each predetermined height until reaching the height at which the mesh 114 is raised (S1105 / NO), and when reaching the height at which the mesh 114 is raised (S1105 / YES) ), The process is terminated.

  The length of winding the wire in S1101 to S1104, that is, the height at which the mesh 114 is raised is, for example, 1.0 mm, but an arbitrary value may be set by the user.

  When the control as shown in FIG. 11 is performed when the three-dimensional object is not stable, for example, when the center of gravity of the three-dimensional object formed is relatively high, the three-dimensional object may fall down. Therefore, it is preferable that the main controller 121 determines whether to apply the operation illustrated in FIG. 11 according to the shape of the three-dimensional object to be modeled. For example, the main control unit 121 analyzes the size of the bottom surface of the three-dimensional object that has been shaped, and when the narrowest width is less than the height of the three-dimensional object, that is, when the three-dimensional object has a vertically elongated shape, It is preferable not to execute the operation shown in FIG. When such a condition is met, the user may be allowed to select whether or not to execute the operation shown in FIG.

  Further, even when the operation as shown in FIG. 11 is not executed, when the solid object is in a shape that is not stable as described above and is easy to fall down, the solid object may fall if the speed of raising the mesh 114 is high. There is. Therefore, when the main control unit 121 raises the mesh 114 in step S809, it is preferable to analyze the shape of the three-dimensional object and to slow down the ascending speed when the condition is easy to fall down.

  As a control mode of the speed at which the mesh 114 is raised, for example, it is usually 10 mm / s, and can be set to 5 mm / s, which is a half when the three-dimensional object easily falls. In addition, any value may be set by the user.

  In order to shorten the processing time of S809, the speed at which the mesh 114 is raised in S809 may be set in inverse proportion to the weight of the three-dimensional object. The weight of the three-dimensional object can be determined by, for example, the amount of the powder material corresponding to the discharge amount of the fixing agent and the shape of the three-dimensional object. In addition, the amount of the powder material according to the shape of the three-dimensional object can be easily determined by the product of the bottom area of the three-dimensional object, the descending amount of the modeling stage 111 by the number of times S804 is repeated, and the specific gravity of the powder material. is there.

  About control which makes the speed which raises the mesh 114 in S809 inversely proportional to the weight of a solid thing, you may make it confirm the necessity for a user. For example, when the weight of the three-dimensional object is heavier than a predetermined threshold value, the user can select whether or not to slow down the mesh 114.

  In addition, when the weight of the three-dimensional object is somewhat heavy, the mesh 114 may not be raised depending on the torque of the wire motor 130. In such a case, as the process of S809, it is possible to take out a three-dimensional object from the powder material by repeatedly raising and lowering the modeling stage 111. Such an example will be described.

  FIG. 12 is a flowchart showing the operation when the mesh 114 is raised by using the rise of the modeling stage 111. As shown in FIG. 12, the main control unit 121 first controls the powder supply unit driver 123 and the wire motor driver 126 to raise the modeling stage 111 and the mesh 114 by a predetermined height (S1201). The amount of increase in S1201 is, for example, 1.0 mm.

  Subsequently, the main control unit 121 controls the powder supply unit driver 123 to process the modeling stage 111 to a predetermined height (S1202). The descending amount in S1202 is the same as that in S1201. As a result, the mesh 114 is raised from the modeling stage 111 by a predetermined height. The main control unit 121 repeats the process from S1201 for the height that needs to raise the mesh 114 (S1203 / NO), and when the increase for the required height is completed (S1203 / YES), the process ends. .

  In the operation of FIG. 12, the three-dimensional object is not lifted by raising the mesh 114, but the three-dimensional object is raised by raising the modeling stage 111, and the three-dimensional object is instructed by the mesh 114 in that state, and then the modeling stage 111 is lowered. By repeating this, the mesh 114 is spoken from the modeling stage 111, and a three-dimensional object is taken out from the powder material. By such a process, even when the three-dimensional object cannot be picked up due to insufficient torque of the wire motor 130, the three-dimensional object can be taken out from the powder material.

  Moreover, in the said embodiment, as demonstrated by S801-S803 of FIG. 8, in order to embed the mesh 114 in a powder material, the case where the supply operation | movement of a normal powder material was repeated was demonstrated as an example. In addition, a simple method for quickly ending the process can be used. Such a case will be described.

  FIG. 13 is a flowchart showing an operation in a case where the process of filling the mesh 114 in S801 to S803 in FIG. 8 is simply executed. As shown in FIG. 13, the main control unit 121 controls the powder supply unit driver 123 and the wire motor driver 126 to adjust the height of the modeling stage 111 and the mesh 114 (S1301). In S1301, the main control unit 121 causes the modeling stage 111 and the mesh 114 to be processed by the height of the powder material necessary for filling the mesh 114, that is, the predetermined height in S803 of FIG.

  When the height adjustment is completed, the main control unit 121 waits until a predetermined amount of powder material is supplied to the space provided when the modeling stage 111 is lowered (S1302). When a predetermined amount of powder material is supplied, the main control unit 121 controls the powder supply unit driver 123 to vibrate the modeling stage 111 (S1303). By this process, the powder material supplied to the modeling stage 111 and the mesh 114 is leveled.

  Thereafter, the main control unit 121 controls the powder supply unit driver 123 to start and move the recoater 113, and arranges the powder material on the modeling stage 111 and the mesh 114 further flat (S1304). End the process. By such processing, it becomes possible to finish the processing more quickly than repeating the processing of S801 to S803 of FIG.

  Moreover, in the said embodiment, when raising / lowering the modeling stage 111, the case where the mesh 114 was also raised / lowered by controlling the wire motor driver 126 was demonstrated as an example. This is control for matching the height of the modeling stage 111 with the height of the mesh 114. In addition to the case where the wire motor driver 126 is positively controlled, the wire 115a, 115b, 115c, 115d is set in a released state with respect to the wire motor 130, and the modeling stage 111 is moved up or down, thereby forming the modeling. It may be raised and lowered according to the stage 111.

  The 3D printer 1 includes a plurality of motors such as a motor that raises and lowers the modeling stage 111, a motor that raises and lowers the supply stage 112, a motor that moves the arm 102, and a wire motor 130. Each motor is controlled by the respective driver described with reference to FIG. 7, but there are cases where the drive control of the motor becomes impossible due to a problem.

  When the main control unit 121 executes the operation shown in FIG. 8 and the drive control of any motor fails due to a malfunction, the main control unit 121 performs the drive control of the motor that failed the drive control every 500 ms. The operation is repeated a predetermined number of times, and the subsequent operation is executed as soon as the operation is confirmed. Thereby, it is possible to quickly recover from a temporary malfunction. The number of repetitions every 500 ms is three, for example, but an arbitrary number may be set by the user.

  On the other hand, if the operation cannot be confirmed even after repeating the drive control every 500 ms a predetermined number of times, it is preferable to stop the modeling operation being performed and notify the user of an error. At this time, when the motor whose operation cannot be confirmed is the wire motor 130, the mesh 114 can be raised by the operation described in FIG.

10 CPU
20 RAM
30 ROM
40 HDD
50 I / F
60 LCD
70 Operation unit 80 Bus 100 Controller 101 IJ head 102 Arm 110 Powder supply unit 111 Modeling stage 112 Supply stage 113 Recoater 114 Mesh 115a, 115b, 115c, 115d Wire 116a, 116b, 116c, 116d Pulley 120 Controller 121 Main control unit 122 Network Control unit 123 Powder supply unit driver 124 IJ head driver 125 Arm driver 126 Wire motor driver 130 Wire motor

JP 2004-291625 A JP 2013-184405 A

Claims (10)

A flat powder material is supplied so as to be deposited in a vertical direction, and a coagulating liquid for solidifying the powder material is discharged onto the supplied powder material to solidify the powder material, thereby forming a molding material. A three-dimensional modeling apparatus for modeling a three-dimensional object by laminating layers of
A modeling stage in which the powder material is supplied in a planar shape,
A lifting member disposed on the modeling stage before the powder material for forming the three-dimensional object is supplied and provided with an opening through which the powder material in an unsolidified state can pass;
After the layer of the molding material is laminated to form a three-dimensional object, the three-dimensional object in a state of being buried in the powder material in a non-solidified state is taken out by separating the lifting member from the modeling stage. The three-dimensional modeling apparatus characterized by this.   The three-dimensional object according to claim 1, wherein supply of the powder material for forming the three-dimensional object is started after the powder material to the extent that the fishing member is buried is supplied onto the modeling stage. Modeling equipment.   3. The fishing material is buried in the powder material by virtue of the vibration of the modeling stage after the powder material to the extent that the fishing member is buried is supplied onto the modeling stage. 3D modeling equipment. A housing part that is arranged adjacent to the modeling stage and that accommodates the powder material supplied to the modeling stage and a supply part that supplies the powder material stored in the housing part to the modeling stage side;
The powder material supplied onto the modeling stage is prepared by driving the supply unit after the powder material to the extent that the fishing member is buried is supplied onto the modeling stage. Item 4. The three-dimensional modeling apparatus according to Item 2 or 3.   The said fishing member is separated from the said modeling stage by being picked up by the some rope-shaped member, and the said fishing member is picked up by winding up each of the said some rope-like members in order. 4. The three-dimensional modeling apparatus according to any one of 4 above.   The three-dimensional modeling apparatus according to any one of claims 1 to 5, wherein the fishing member vibrates after being separated from the modeling stage.   The three-dimensional modeling apparatus according to claim 1, wherein after the three-dimensional object is formed, the fishing member is separated from the modeling stage by a height of the formed three-dimensional object or more. .   The three-dimensional modeling apparatus according to claim 1, wherein the fishing member is separated from the modeling stage at a speed according to a shape of the three-dimensional object formed. A flat powder material is supplied so as to be deposited in a vertical direction, and a coagulating liquid for solidifying the powder material is discharged onto the supplied powder material to solidify the powder material, thereby forming a molding material. A method for controlling a three-dimensional modeling apparatus for modeling a three-dimensional object by laminating layers of
On the modeling stage on which the three-dimensional object is formed before the powder material for forming the three-dimensional object is supplied to the fishing member provided with an opening through which the powder material in a non-solidified state can pass. Placed in
Repeat the supply of the powder material and the discharge of the coagulation liquid to form the three-dimensional object,
After the three-dimensional object is formed, the three-dimensional object is removed from the modeling stage to take out the three-dimensional object embedded in the powder material that is not solidified. Method. A flat powder material is supplied so as to be deposited in a vertical direction, and a coagulating liquid for solidifying the powder material is discharged onto the supplied powder material to solidify the powder material, thereby forming a molding material. It is a manufacturing method of a three-dimensional object that forms a three-dimensional object by laminating layers of
On the modeling stage on which the three-dimensional object is formed before the powder material for forming the three-dimensional object is supplied to the fishing member provided with an opening through which the powder material in a non-solidified state can pass. Placed in
Repeat the supply of the powder material and the discharge of the coagulation liquid to form the three-dimensional object,
After the three-dimensional object is formed, the three-dimensional object embedded in the powder material in a non-solidified state is taken out by separating the fishing member from the modeling stage. .