WO2016113955A1 - 三次元造形装置、及びその制御方法、並びにその造形物 - Google Patents
三次元造形装置、及びその制御方法、並びにその造形物 Download PDFInfo
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- WO2016113955A1 WO2016113955A1 PCT/JP2015/077554 JP2015077554W WO2016113955A1 WO 2016113955 A1 WO2016113955 A1 WO 2016113955A1 JP 2015077554 W JP2015077554 W JP 2015077554W WO 2016113955 A1 WO2016113955 A1 WO 2016113955A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/227—Driving means
- B29C64/232—Driving means for motion along the axis orthogonal to the plane of a layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/227—Driving means
- B29C64/236—Driving means for motion in a direction within the plane of a layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
- B29C64/336—Feeding of two or more materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3425—Printed circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/08—PCBs, i.e. printed circuit boards
Definitions
- the present invention relates to a three-dimensional modeling apparatus, a control method thereof, and a modeled article thereof.
- Patent Document 1 discloses a three-dimensional modeling apparatus that manufactures a model based on three-dimensional design data.
- various methods such as an optical modeling method, a powder sintering method, an ink jet method, and a molten resin extrusion modeling method have been proposed and commercialized.
- a modeling head for discharging the molten resin that is the material of the modeled object is mounted on the three-dimensional movement mechanism, and the modeling head is moved in the three-dimensional direction.
- the molded resin is obtained by laminating the molten resin while discharging the molten resin.
- a three-dimensional modeling apparatus that employs an ink jet method has a structure in which a modeling head for dropping a heated thermoplastic material is mounted on a three-dimensional movement mechanism.
- the present invention provides a three-dimensional modeling apparatus, a control method thereof, and a modeled object capable of strengthening bonding between a plurality of different materials even when generating a modeled object using a plurality of materials in a composite manner.
- the purpose is to do.
- the three-dimensional modeling apparatus includes a modeling stage on which a model is placed, a lifting unit movable at least in a vertical direction with respect to the modeling stage, and a plurality of types of resins mounted on the lifting unit and having different materials.
- a modeling head that receives a supply of material, and a controller that controls the lifting unit and the modeling head are provided.
- the control unit is configured such that a first resin material of the plurality of types of resin materials is continuously formed in a first direction and has a gap in a second direction intersecting the first direction.
- the second resin material other than the first resin material among the plurality of types of resin materials is continuously formed in the first direction and arranged in the gap.
- the shaping head is controlled.
- the control unit is further configured such that, in the second layer above the first layer, the first resin material is continuously formed in a third direction intersecting the first direction and the third layer is formed.
- the molding head is controlled so that the second resin material is continuously formed in the third direction and arranged in the gap in the fourth direction intersecting the direction. .
- the first resin material formed in the first layer and the first resin material formed in the second layer are joined in the vertical direction.
- the second resin material formed on the first layer and the second resin material formed on the second layer are joined in the vertical direction.
- the modeled object according to the present invention is a modeled object including a plurality of types of resin materials, and includes a first layer and a second layer.
- the first layer is arranged such that the first resin material of the plurality of types of resin materials is continuously formed in the first direction and has a gap in the second direction intersecting the first direction.
- the second resin material other than the first resin material among the plurality of types of resin materials includes a portion that is continuously formed in the first direction and arranged in the gap.
- the first resin material is continuously formed in a third direction intersecting with the first direction and intersecting with the third direction.
- the second resin material of the plurality of types of resin material is continuously formed in the third direction and arranged in the gap, thereby,
- the first resin material formed on the first layer and the first resin material formed on the second layer are joined in the vertical direction, and further formed on the first layer.
- the second resin material includes a portion where the second resin material formed in the second layer is joined in the vertical direction.
- the control method of the three-dimensional modeling apparatus which concerns on this invention is a control method of the three-dimensional modeling apparatus provided with the modeling head.
- the first resin material of the plurality of types of resin materials is continuously formed in the first direction and has a gap in the second direction intersecting the first direction.
- the molding is arranged such that second resin materials other than the first resin material among the plurality of types of resin materials are continuously formed in the first direction and arranged in the gap. Control the head.
- the first resin material is continuously formed in a third direction intersecting with the first direction and intersecting with the third direction.
- the shaping head is controlled so that the second resin material is continuously formed in the third direction and arranged in the gap while being arranged with a gap in the fourth direction.
- the first resin material formed in the first layer and the first resin material formed in the second layer are joined in the vertical direction, and further the first layer
- the second resin material formed on the second layer and the second resin material formed on the second layer are joined in the vertical direction.
- FIG. 2 is a perspective view showing a configuration of an XY stage 12.
- FIG. 3 is a plan view showing the configuration of the lifting table 14.
- FIG. It is a functional block diagram which shows the structure of the computer 200 (control apparatus). It is a side view which shows an example of the structure of the molded article S formed by this Embodiment. It is a perspective view which shows an example of the structure of the molded article S formed by this Embodiment. It is process drawing which shows the manufacturing process of the molded article S shown in FIG.6 and FIG.7.
- FIG. 1 It is a top view which shows an example of the structure of the molded article S formed by this Embodiment.
- the modification of the molded article S is shown.
- the modification of the molded article S is shown.
- the modification of the molded article S is shown.
- It is a flowchart which shows the procedure of modeling by the three-dimensional modeling apparatus of this Embodiment.
- the schematic structure of the three-dimensional modeling apparatus which concerns on 2nd Embodiment is shown.
- It is a perspective view which shows schematic structure of the three-dimensional modeling apparatus which concerns on a modification. It is process drawing explaining the other method for manufacturing the molded article S.
- FIG. 1 shows an example of the structure of the molded article S formed by this Embodiment.
- the modification of the molded article S is shown.
- It is a flowchart which shows the procedure of modeling by the three-dimensional modeling apparatus of this Em
- FIG. It is process drawing explaining the other method for manufacturing the molded article S.
- FIG. It is process drawing explaining the other method for manufacturing the molded article S.
- FIG. It is process drawing explaining the other method for manufacturing the molded article S.
- FIG. The 1st specific example of the molded article S is shown.
- the 2nd specific example of the molded article S is shown.
- the 3rd specific example of the molded article S is shown.
- the 4th example of the molded article S is shown.
- FIG. 1 is a perspective view showing a schematic configuration of a 3D printer 100 used in the first embodiment.
- the 3D printer 100 includes a frame 11, an XY stage 12, a modeling stage 13, a lifting table 14, and a guide shaft 15.
- a computer 200 is connected to the 3D printer 100 as a control device for controlling the 3D printer 100.
- a driver 300 for driving various mechanisms in the 3D printer 100 is also connected to the 3D printer 100.
- the frame 11 has, for example, a rectangular parallelepiped shape and includes a frame made of a metal material such as aluminum.
- the frame 11 has, for example, a rectangular parallelepiped shape and includes a frame made of a metal material such as aluminum.
- four guide shafts 15 are formed at four corners of the frame 11 so as to extend in the Z direction in FIG. 1, that is, in a direction perpendicular to the plane of the modeling stage 10.
- the guide shaft 15 is a linear member that defines a direction in which the elevating table 14 is moved in the vertical direction as will be described later.
- the number of guide shafts 15 is not limited to four, and is set to a number that can stably maintain and move the lifting table 14.
- the modeling stage 13 is a table on which the model S is placed, and is a table on which a thermoplastic resin discharged from a modeling head described later is deposited.
- the lifting table 14 penetrates the guide shaft 15 at its four corners, and is configured to be movable along the longitudinal direction (Z direction) of the guide shaft 15. .
- the elevating table 14 includes rollers 34 and 35 that are in contact with the guide shaft 15.
- the rollers 34 and 35 are rotatably installed at arm portions 33 formed at two corners of the lifting table 14.
- the rollers 34 and 35 rotate while being in contact with the guide shaft 15 so that the elevating table 14 can smoothly move in the Z direction. Further, as shown in FIG.
- the elevating table 14 transmits a driving force of the motor Mz by a power transmission mechanism including a timing belt, a wire, a pulley, and the like, so that a predetermined interval (for example, 0.1 mm pitch) in the vertical direction.
- a predetermined interval for example, 0.1 mm pitch
- the motor Mz for example, a servo motor or a stepping motor is suitable.
- the actual position of the lifting table 14 in the height direction is measured continuously or intermittently in real time using a position sensor (not shown), and the position accuracy of the lifting table 14 is improved by appropriately correcting the position. May be. The same applies to modeling heads 25A and 25B described later.
- FIG. 3 is a perspective view showing a schematic configuration of the XY stage 12.
- the XY stage 12 includes a frame body 21, an X guide rail 22, a Y guide rail 23, reels 24A and 24B, modeling heads 25A and 25B, and a modeling head holder H. Both ends of the X guide rail 22 are fitted into the Y guide rail 23 and are held slidable in the Y direction.
- the reels 24A and 24B are fixed to the modeling head holder H, and move in the XY directions following the movement of the modeling heads 25A and 25B held by the modeling head holder H.
- thermoplastic resin used as the material of the shaped object S is a string-like resin (filaments 38A and 38B) having a diameter of about 3 to 1.75 mm and is usually held in a state of being wound around the reels 24A and 24B. At the time of modeling, it is fed into the modeling heads 25A and 25B by motors (extruders) provided on the modeling heads 25A and 25B described later.
- the reels 24 ⁇ / b> A and 24 ⁇ / b> B may be fixed to the frame body 21 or the like without being fixed to the modeling head holder H so that the movement of the modeling head 25 is not followed.
- the filaments 38A and 38B are exposed to be fed into the modeling head 25.
- the filaments 38A and 38B may be fed into the modeling heads 25A and 25B with a guide (for example, a tube or a ring guide) interposed therebetween.
- the filaments 38A and 38B are made of different materials.
- the other can be a resin other than the one resin.
- the kind and ratio of the material of the filler contained in the inside can also be made to differ. That is, it is preferable that the filaments 38A and 38B have different properties, and the characteristics (strength and the like) of the shaped article can be improved by a combination thereof.
- the modeling head 25A is configured to melt and discharge the filament 38A
- the modeling head 25B is configured to melt and discharge the filament 38B, and independent modeling for different filaments.
- a head is prepared.
- the present invention is not limited to this, and there is a configuration in which only a single modeling head is prepared, and a plurality of types of filaments (resin materials) are selectively melted and discharged by the single modeling head. Can be adopted.
- the filaments 38A and 38B are fed into the modeling heads 25A and 25B from the reels 24A and 24B through the tube Tb.
- the modeling heads 25A and 25B are held by the modeling head holder H and configured to be movable along the X and Y guide rails 22 and 23 together with the reels 24A and 25B.
- an extruder motor for feeding the filaments 38A and 38B downward in the Z direction is arranged in the modeling heads 25A and 25B.
- the modeling heads 25A and 25B only need to be movable with the modeling head holder H while maintaining a certain positional relationship within the XY plane, but the mutual positional relationship can also be changed in the XY plane. It may be configured.
- motors Mx and My for moving the modeling heads 25A and 25B relative to the XY table 12 are also provided on the XY stage 12.
- the motors Mx and My for example, a servo motor or a stepping motor is suitable.
- the driver 300 includes a CPU 301, a filament feeding device 302, a head control device 303, a current switch 304, and a motor driver 306.
- the CPU 301 receives various signals from the computer 200 via the input / output interface 307 and controls the entire driver 300.
- the filament feeding device 302 instructs the extruder motors in the modeling heads 25A and 25B to control the feeding amount (push-in amount or retraction amount) of the filaments 38A and 38B with respect to the modeling heads 25A and 25B. To do.
- the current switch 304 is a switch circuit for switching the amount of current flowing through the heater 26. By switching the switching state of the current switch 304, the current flowing through the heater 26 is increased or decreased, thereby controlling the temperatures of the modeling heads 25A and 25B.
- the motor driver 306 generates drive signals for controlling the motors Mx, My, and Mz according to the control signal from the CPU 301.
- FIG. 5 is a functional block diagram showing the configuration of the computer 200 (control device).
- the computer 200 includes a spatial filter processing unit 201, a slicer 202, a modeling scheduler 203, a modeling instruction unit 204, and a modeling vector generation unit 205. These configurations can be realized by a computer program inside the computer 200.
- the spatial filter processing unit 201 receives master 3D data indicating the three-dimensional shape of a model to be modeled from the outside, and performs various data processing on the model space in which the model is formed based on the master 3D data. . Specifically, as will be described later, the spatial filter processing unit 201 divides the modeling space into a plurality of modeling units Up (x, y, z) as necessary, and the plurality of modeling units based on the master 3D data. Each of the Ups has a function of assigning property data indicating characteristics to be given to each modeling unit. The necessity of division into modeling units and the size of each modeling unit are determined by the size and shape of the formed object S to be formed. For example, when a simple plate material is formed, division into modeling units is not necessary.
- the modeling instruction unit 204 provides instruction data regarding the contents of modeling to the spatial filter processing unit 201 and the slicer 202.
- the instruction data includes the following as an example. These are merely examples, and all or a part of these instructions may be input. Needless to say, an instruction different from the items listed below may be input.
- the modeling instruction unit 204 may receive input of instruction data from an input device such as a keyboard or a mouse, or may be provided with instruction data from a storage device that stores modeling contents. .
- the slicer 202 has a function of converting each of the modeling units Up into a plurality of slice data.
- the slice data is sent to the modeling scheduler 203 at the subsequent stage.
- the modeling scheduler 203 has a role of determining a modeling procedure and a modeling direction in the slice data according to the property data described above.
- the modeling vector generation unit 205 generates a modeling vector according to the modeling procedure and the modeling direction determined by the modeling scheduler 203. This modeling vector data is transmitted to the driver 300.
- the driver 300 controls the 3D printer 100 according to the received modeling vector data.
- the three-dimensional modeling apparatus controls the control apparatus 200 so that the direction in which the resin material is extended (modeling direction) is different for each layer depending on the blending ratio of the plurality of types of resin materials.
- Works. 6 and 7 show an example of the structure of the shaped object S formed according to the present embodiment.
- FIG. 6 is a side view of the molded object S manufactured by the three-dimensional modeling apparatus of the first embodiment
- FIG. 7 is a perspective view thereof.
- one modeling object S is modeled using a plurality of types of resin materials R ⁇ b> 1 and R ⁇ b> 2 (hereinafter simplified description). Therefore, the case where two types of resin materials are used will be mainly described, but it goes without saying that three or more types of resin materials may be used).
- a plurality of types of resin materials R1 and R2 are formed in one layer with a predetermined blending ratio and one direction as a longitudinal direction.
- the blending ratio of the resin materials R1 and R2 is 1: 1
- the lengths of the respective resin materials R1 and R2 are Resin materials R1 and R2 are alternately formed continuously in the X-axis direction so that the direction is the X-axis direction (first direction) and is arranged along the direction orthogonal to the X-axis (second direction). Is done.
- the blending ratio of the resin materials R1 and R2 is 1: 1 as in the first layer, but the resin materials R1 and R2
- the longitudinal direction is not the X-axis direction of the first layer but an axis (third direction) intersecting with this, for example, the Y-axis direction, and the resin materials R1 and R2 are in the X-axis direction (fourth direction). Arranged along.
- the number of resin materials, the blending ratio of the resin materials, and the like shown in FIGS. 6 and 7 are merely examples, and can be variously changed depending on the required specifications of the modeled object. Needless to say.
- it is not necessary that the structure of FIG.6 and FIG.7 is repeatedly formed in the whole molded article S.
- FIG. In a part of the shaped object S only the same resin material may be formed.
- the resin material R1 extends in the first direction in one layer, while extending in the second direction intersecting the first direction in the layer one layer higher than that.
- the molded object S has the structure (what is called a girder structure) which resin material R1 joins in the up-down direction in the intersection position of resin material R1 in a 1st layer and a 2nd layer.
- the resin material R2 has a similar cross beam structure at a position sandwiched between the resin materials R1 and is joined in the vertical direction.
- a modeled product having the characteristics of different types of resin materials can be provided.
- it has the advantage of the first resin material, and the disadvantage of the first resin material can be supplemented by the advantage of the second resin material.
- the resin material R1 is formed with an arrangement pitch of approximately 1: 1 and the X direction as the longitudinal direction.
- the resin material R2 is similarly formed at an approximately 1: 1 arrangement pitch so as to fill the interval of the resin material R1.
- the resin material R2 can be formed so as to fill the gap between the two resin materials R1 along the outer peripheral shape of the resin material R1.
- the resin material R2 is formed with an arrangement pitch of approximately 1: 1 and the Y direction as the longitudinal direction.
- the resin material R1 is similarly formed at an arrangement pitch of 1: 1 so as to fill the interval of the resin material R2.
- the resin material R1 can be formed so as to fill the gap between the two resin materials R2 along the outer peripheral shape of the resin material R2.
- the resin material R2 is first formed at a predetermined arrangement pitch, and then the resin material R1 is embedded in the gap between the resin materials R2.
- the order of forming the resin materials R1 and R2 is different between the first layer and the second layer.
- a specific resin material for example, resin material R1
- another resin material for example, resin material R2
- the blending ratio is not limited to 1: 1, and other desired ratios can be set.
- FIG.9 and FIG.10 has shown the case where the compounding ratio of resin material R1 and R2 is 2: 1. Further, the blending ratio can be changed stepwise or continuously in the stacking direction and / or in the horizontal direction (in the same layer). *
- the molded object S in which the mixing ratio of the resin materials R1 and R2 is 2: 1 is formed by repeatedly forming two resin materials R1 and one resin material R2 as shown in FIGS. Can do.
- the present invention is not limited to this.
- a compounding ratio of 2: 1 can be obtained by repeatedly forming four resin materials R1 and two resin materials R2.
- the repeated pattern of the resin materials R1 and R2 as shown in FIG. 9 is expressed as “2: 1 repeated pattern”.
- the case as shown in FIG. 11 is expressed as “4: 2 repetitive pattern”.
- the case where the resin materials R1 and R2 are repeatedly formed by m and n, respectively, is expressed as an m: n repeating pattern. This repetitive pattern is expressed by repetitive pattern data PR described later.
- a resin material having a columnar approximate shape can be formed continuously, but in FIG. 13 and FIG. As shown, a plate-like resin material can also be formed.
- FIG. 15 is a case where a mixture ratio is 1: 1, This is merely an example, and it goes without saying that it is possible to use a blending ratio other than that shown in the figure).
- the modeling space can be divided into a plurality of modeling units Up as necessary.
- One modeling unit Up is further divided into a plurality of slice data, and modeling is performed for each layer corresponding to the slice data.
- the modeling of the first layer of one modeling unit Up is completed, the modeling of the first layer of the modeling unit (for example, the modeling unit Up ′ in FIG. 15) adjacent to the modeling unit Up is started.
- the resin materials R1 and R2 are formed adjacent to each other at a predetermined arrangement pitch with one direction (for example, the X direction) as the longitudinal direction.
- the resin materials R1 and R2 are continuously formed in the same layer with different directions (for example, Y direction) as the longitudinal direction.
- Y direction a structure as shown in FIGS. 6 and 7 is formed.
- the layers may be stacked in parallel with the Z direction as shown in FIG. 15, but instead, for example, as shown in FIG. 16, the layers are shifted in the XY direction.
- FIG. 16 exemplifies a case where they are shifted by half a pitch in each of the X direction and the Y direction).
- 17 to 19 show modified examples of the shaped object S.
- the resin material R1 and R2 in one layer has a linear shape extending along one direction (X direction or Y direction), and in the layer above that, The resin materials R1 and R2 have a linear shape extending in a direction orthogonal to this (crossing angle 90 degrees).
- the crossing angle of the resin materials R1 and R2 in the upper and lower layers can be set to an angle other than 90 °.
- the bonding area between the same resin materials in the upper and lower layers is larger than that in the case of 90 °, and the strength of the shaped object S can be increased as compared with the cases of FIGS.
- resin material R1, R2 in each layer has a linear shape which makes a certain one direction a longitudinal direction
- each of the resin materials R1 and R2 may have a wavy shape in which the axial direction has one direction as a longitudinal direction (in other words, the resin material is formed continuously in one direction as a whole).
- the center line or envelope of the wavy resin materials R1 and R2 in FIG. 18 has a linear shape
- the center line or envelope itself may have a wavy shape as shown in FIG.
- the resin materials R1 and R2 in FIG. 19 are also formed so as to extend with one direction as a longitudinal direction as a whole.
- the shaped object S of the present embodiment may be formed so that the same resin material intersects with each other in the upper and lower layers, and has a shape that is joined at the intersecting portion.
- the computer 200 receives master 3D data related to the form of the shaped object S from the outside (S11).
- a model S as shown on the left side of FIG. 21 is assumed.
- the modeled object S illustrated in FIG. 21 is a three-dimensional spherical modeled object, and an outer peripheral part Rs1 mainly composed of a resin material R1, an inner peripheral part Rs2 in which the resin material R1 and the resin material R2 are mixed, And a central portion Rs3 mainly made of a resin material R2.
- the master 3D data includes coordinates (X, Y, Z) at each constituent point of the shaped object S and data (Da, Db) indicating the blending ratio of the resin materials R1, R2 at the constituent points.
- the data of each constituent point is denoted as Ds (X, Y, Z, Da, Db).
- Ds data of each constituent point
- Dc data of resin materials to be used
- Dd data of each constituent point
- the size Su of the modeling unit Us, the modeling order data SQ indicating the procedure for modeling the plurality of modeling units Us in one layer, the resin data RU for specifying the plurality of types of resin materials to be used, and the plurality of types of resin materials Repetitive pattern data PR indicating how to repeatedly form (data indicating what kind of pattern a plurality of types of resin materials are to be formed) or the like is output or instructed from the modeling instruction unit 204 (S12).
- part or all of the necessary data is input to the modeling instruction unit 204 from the outside using an input device such as a keyboard or a mouse, or is input to the modeling instruction unit 204 from an external storage device.
- the spatial filter processing unit 201 divides the modeling space indicated by the master 3D data into a plurality of modeling units Up based on the instructed modeling unit size Su (S13).
- the modeling unit Up is a rectangular space obtained by dividing the modeling space of the model S in the XYZ directions.
- the property data reflecting the corresponding component point data Ds (X, Y, Z, Da, Db) is given to each divided modeling unit Up (S14).
- the master 3D data is continuous value 3D data indicating the shape of the model S, whereas the data for each modeling unit Up is discrete value 3D data indicating the shape for each modeling unit Up.
- the data of the modeling unit Up to which such property data is assigned is transmitted to the slicer 202.
- the slicer 202 further divides the data of the modeling unit Up along the XY plane to generate a plurality of sets of slice data (S15).
- the aforementioned property data is given to the slice data.
- the modeling scheduler 203 executes density modulation on each slice data according to the property data included in each slice data (S16).
- Density modulation is an arithmetic operation for determining the formation ratio of the resin materials R1 and R2 in the slice data in accordance with the blending ratio (Da, Db) described above.
- the modeling scheduler 203 determines the repetitive pattern and the modeling direction of the resin materials R1 and R2 based on the calculation result of the density modulation described above and the modeling order data SQ and the repeating pattern data PR received from the modeling instruction unit 204. (S17).
- the modeling direction in the slice data of one layer is set in a direction orthogonal to the slice data in the next lower layer in order to obtain the above-mentioned cross beam structure.
- the modeling vector generation unit 205 generates a modeling vector according to the modeling direction data determined by the modeling scheduler 203 (S18). This modeling vector is output to the 3D printer 100 via the driver 300, and a modeling operation according to the master 3D data is executed (S19). Moreover, according to the modeling order data SQ instruct
- a plurality of types of resin materials are formed along the first direction and intersect the first direction.
- the modeling heads 24A and 24B are controlled so that a plurality of types of resin materials are arranged in the second direction.
- a plurality of types of resin materials are formed along a third direction intersecting with the first direction, and the fourth layer intersecting with the third direction.
- the modeling heads 25A and 25B are controlled so that a plurality of types of resin materials are arranged in the direction of.
- a plurality of types of resin materials are incorporated into the so-called cross-girder structure in the modeled object, and the same material contacts the height direction even when generating a modeled object using a plurality of materials in combination. Since it exists, the joint between different materials can be strengthened comprehensively.
- a plurality of types of resin materials in one modeled object it becomes possible to provide a modeled object having the advantages of the plurality of types of resin materials. For example, materials generally have properties in which strength and flexibility are contradictory, and development and production of materials having both are industrially extremely difficult.
- a high-strength and high-flexibility resin material is realized by configuring a cross-girder structure using, for example, a high-strength resin material R1 and a high-flexibility resin material R2. can do.
- the strength and flexibility characteristics can be freely varied by varying the composition ratio of the resin material R1 and the resin material R2.
- the density of a material that can only realize discrete values in the prior art can realize a continuous material density.
- a mixed material of materials having greatly different specific gravity, which can be realized only in a weightless state such as outer space can be realized by this modeling apparatus.
- FIGS. 1-10 a three-dimensional modeling apparatus according to a second embodiment of the present invention will be described with reference to FIGS.
- the overall configuration, the basic operation, and the modeled object S that can be formed are the same as those of the first embodiment, and therefore, a duplicate description is omitted below.
- the structure of the modeling heads 25A and 25B is different from that of the first embodiment.
- the modeling head 25A of the second embodiment includes a plurality of (four in the illustrated example) discharge holes NA1 to NA4 arranged in a line in a direction orthogonal to the modeling direction.
- the discharge holes NA1 to NA4 are given an arrangement pitch such that the resin material R1 discharged from each of them is continuously arranged. That is, the opening diameter ⁇ of each of the discharge holes NA1 to NA4 and the pitch P between the adjacent discharge holes NA1 to NA4 determine the arrangement width of the resin material R1 formed continuously.
- the modeling head 25B also includes a plurality of (four in the illustrated example) discharge holes NB1 to NB4 arranged in a line in a direction orthogonal to the modeling direction.
- the discharge holes NA1 to NA4 and NB1 to NB4 are controlled so as to be aligned in a direction orthogonal to the determined modeling direction.
- the moving mechanism of the 3D printer 100 includes the guide shaft 15 that extends perpendicularly to the modeling stage 13, the lifting table 14 that moves along the guide shaft 15, and the XY table 12.
- the moving mechanism of the 3D printer 100 of the present invention is not limited to this.
- the XY table 12 on which the modeling heads 25 ⁇ / b> A and 25 ⁇ / b> B are mounted may be fixed, and a moving mechanism that allows the modeling stage 13 to move up and down.
- the moving mechanism of the 3D printer 100 can include a multi-axis arm 41 having a fixed end on the bottom surface of the frame 11.
- the modeling head 25A, 25B similar to the above-mentioned embodiment can be mounted in the moving end (elevating part) of this multi-axis arm 41.
- the 3D printer 100, the computer 200, and the driver 300 are configured to be independent from each other.
- the computer 200 and the driver 300 can be incorporated in the 3D printer 100.
- 24A to 24D are process diagrams showing another manufacturing process of the above-described shaped object S.
- the resin materials R1 and R2 are bundled in parallel with each other according to a predetermined arrangement order, and both ends thereof are fixed by the fixture 41.
- a pressure plate 42 and a heating plate 43 are placed on the resin materials R1 and R2 that are bundled in parallel to each other, and the resin materials R1 and R2 are pressurized and predetermined. Heat to the temperature of.
- an adhesive (adhesive resin) or an adhesive (surface treatment agent, surface modifier, cup) Modeling may be performed while spraying the ring agent) from the outside.
- an example of the adhesive is a material having a function of entering the interface between the resin materials R1 and R2 and filling the gap.
- adhesion agents surface treatment agents, surface modifiers, coupling agents
- the 1st specific example of the molded article S is shown in FIG.
- the shaped object S is applied as a material for a printed circuit board for an electronic circuit.
- a glass epoxy resin in which a thermosetting resin and glass fiber are combined is used as a material for the printed circuit board.
- the dielectric constant of glass fiber is as large as about 6.13.
- the glass epoxy resin acts as a parasitic capacitance in the circuit on which the printed circuit board is mounted.
- transmission loss and transmission delay increase, and an error may occur.
- the resin material R1 a low dielectric material such as polypropylene, polytetrafluoroethylene (PTFE), or polychlorotrifluoroethylene (PCTFE) is used as the resin material R1.
- PTFE polytetrafluoroethylene
- PCTFE polychlorotrifluoroethylene
- the resin material R2 for example, a material excellent in heat resistance and rigidity such as polycarbonate and liquid crystal polymer can be used.
- the thermal expansion coefficient of the liquid crystal polymer is very low and the rigidity is high, so that a printed circuit board can be used in a wide temperature range.
- the materials of the resin materials R1 and R2, the blending ratio thereof, and the like can be arbitrarily selected according to the required characteristics of the printed circuit board.
- the main frame material R0 has a so-called cross beam structure. That is, as shown in FIG. 26, the longitudinal direction of the main frame material R0 in the first layer intersects with the longitudinal direction of the main frame R0 in the second layer immediately above the main layer material R0. The frame materials R0 are joined together.
- the resin materials R1 and R2 are formed so as to fill the gaps in the main frame material R0 having the cross beam structure.
- the material of the main frame material R0 for example, polycarbonate resin can be used.
- the cross-girder structure of the main frame R0 does not need to be formed over the entire model S, and may be a model S that does not partially have a cross-girder structure as shown in FIG.
- a low dielectric material such as polypropylene, polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene (PCTFE) can be used as in the first specific example.
- a high dielectric material such as polyvinylidene fluoride (PVDF) can be used as the resin material R1.
- Resin materials R1 and R2 are alternately laminated at a predetermined interval inside the shaped object S, and the electromagnetic wave attenuation characteristics of the shaped object S can be changed by appropriately adjusting the blending ratio and the arrangement pitch. Specifically, since the refraction, reflection, and transmission related to the electric field change as the mixing ratio and arrangement pitch change from layer to layer or in-plane, the transmission length changes and the vector direction of the polarization plane changes. A change occurs and the attenuation characteristic of the electromagnetic wave can be adjusted. For example, when the arrangement pitch of the resin materials R1 and R2 changes, the degree of refraction and reflection with respect to the electric field at the interface changes, the transmission length changes, and the attenuation changes.
- an electromagnetic wave that can control the attenuation characteristics of an arbitrary electromagnetic wave regardless of the polarization method and frequency, or the combination of the refraction, reflection, transmission, etc. of the electric field or the polarization plane can be controlled.
- a control element can be provided.
- three different dielectric constant materials are configured to vary in multiple layers while having various types of in-plane configurations, so that reflection is performed in a plurality of modes inside the shaped object S. Attenuation occurs due to cancellation due to transmission and extension of transmission length.
- the 3rd specific example of the molded article S is shown in FIG.
- the shaped object S is applied to the material of the sound absorbing element.
- the shaped object S in FIG. 26 can also be formed by similarly laminating resin materials R1 and R2 in a cross-girder structure.
- resin materials R1 and R2 it is also possible to add a main frame material R0 that is a framework of the model S.
- a combination of the resin materials R1 and R2 can be a material having high rigidity but inferior flexibility and a material having low rigidity but high flexibility.
- the speed of the sound wave changes at the boundary between the resin materials R1 and R2, thereby causing a phase difference between the sound waves to cancel each other and absorb the sound waves.
- a highly rigid polycarbonate resin can be used as the resin material R1
- a highly flexible material such as an elastomer can be used as the resin material R2.
- this sound wave absorbing element is applied to an enclosure of a canal type earphone (inner ear headphone), sound waves in the audible range are transmitted to the inside of the ear without being obstructed, and sound leakage is prevented by absorbing sound waves to the outside. be able to.
- the 4th specific example of the molded article S is shown in FIG.
- the shaped object S is applied to the material of the shock absorbing element.
- the shock absorbing element conventionally, a highly flexible foam material or a gelled material is often used.
- the foamed material and the gelled material are inferior in air permeability.
- the shaped object S of the fourth specific example has the following characteristics, and thus it is possible to provide an impact absorbing element that solves the problem of air permeability.
- the shaped object S of the fourth specific example of FIG. 28 can be similarly formed by laminating resin materials R1 and R2 in a cross-girder structure.
- resin materials R1 and R2 in addition to the resin materials R1 and R2, it is also possible to add a main frame material R0 that is a framework of the model S.
- a material having high rigidity and a material having low rigidity but high flexibility can be used as a combination of the resin materials R1 and R2.
- a highly rigid polycarbonate resin can be used as the resin material R1
- a highly flexible material such as an elastomer can be used as the elastic reinforcing material as the resin material R2.
- the gaps in the cross structure of the resin material R1 are not completely filled with the resin material R2, and the cavity AG remains in part.
- Such a cavity AG can be formed with a desired density and arrangement pitch by adopting, for example, the manufacturing process described with reference to FIG. According to the 4th specific example comprised in this way, the molded article S aiming at coexistence of shock absorption and air permeability can be provided.
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Abstract
Description
また、本発明に係る造形物は、複数種類の樹脂材料を含む造形物であって、第1の層と第2の層とを含む。その第1の層は、複数種類の樹脂材料のうちの第1の樹脂材料が第1の方向に連続的に形成され且つ前記第1方向と交差する第2方向において隙間を空けて配列されると共に、前記複数種類の樹脂材料のうちの前記第1の樹脂材料以外の第2の樹脂材料が、前記第1方向に連続的に形成され且つ前記隙間に配列された部分を含む。また、前記第1の層の上部の第2の層は、前記第1の樹脂材料が、前記第1方向とは交差する第3の方向に連続的に形成され且つ前記第3方向と交差する第4方向において隙間を空けて配列されると共に、前記複数種類の樹脂材料のうちの前記第2の樹脂材料が、前記第3方向に連続的に形成され且つ前記隙間に配列され、これにより、前記第1の層に形成された前記第1の樹脂材料と、前記第2の層に形成された前記第1の樹脂材料とが上下方向で接合し、且つ更に前記第1の層に形成された前記第2の樹脂材料と、前記第2の層に形成された前記第2の樹脂材料とが上下方向で接合されている部分を含む。
また、本発明に係る三次元造形装置の制御方法は、造形ヘッドを備えた三次元造形装置の制御方法である。この方法では、第1の層において、複数種類の樹脂材料のうちの第1の樹脂材料が第1の方向に連続的に形成され且つ前記第1方向と交差する第2方向において隙間を空けて配列されると共に、前記複数種類の樹脂材料のうちの前記第1の樹脂材料以外の第2の樹脂材料が、前記第1方向に連続的に形成され且つ前記隙間に配列されるように前記造形ヘッドを制御する。次に、前記第1の層の上部の第2の層において、前記第1の樹脂材料が、前記第1方向とは交差する第3の方向に連続的に形成され且つ前記第3方向と交差する第4方向において隙間を空けて配列されると共に、前記第2の樹脂材料が、前記第3方向に連続的に形成され且つ前記隙間に配列されるように前記造形ヘッドを制御する。これにより、前記第1の層に形成された前記第1の樹脂材料と、前記第2の層に形成された前記第1の樹脂材料とが上下方向で接合し、且つ更に前記第1の層に形成された前記第2の樹脂材料と、前記第2の層に形成された前記第2の樹脂材料とが上下方向で接合されている。
(全体構成)
図1は、第1の実施の形態で用いる3Dプリンタ100の概略構成を示す斜視図である。3Dプリンタ100は、フレーム11と、XYステージ12と、造形ステージ13と、昇降テーブル14と、ガイドシャフト15とを備えている。
フレーム11は、図1に示すように、例えば直方体の外形を有し、アルミニウム等の金属材料の枠組を備えている。このフレーム11の4つの角部に、例えば4本のガイドシャフト15が、図1のZ方向、すなわち造形ステージ10の平面に対し垂直な方向に延びるように形成されている。ガイドシャフト15は、後述するように昇降テーブル14を上下方向に移動させる方向を規定する直線状の部材である。ガイドシャフト15の本数は4本には限られず、昇降テーブル14を安定的に維持・移動させることができる本数に設定される。
造形ステージ13は、造形物Sが載置される台であり、後述する造形ヘッドから吐出される熱可塑性樹脂が堆積される台である。
昇降テーブル14は、図1及び図2に示すように、その4つの角部においてガイドシャフト15を貫通させており、ガイドシャフト15の長手方向(Z方向)に沿って移動可能に構成されている。昇降テーブル14は、ガイドシャフト15と接触するローラ34,35を備えている。ローラ34,35は昇降テーブル14の2つの角部に形成されたアーム部33において回動可能に設置されている。このローラ34,35がガイドシャフト15上と接触しつつ回動することで、昇降テーブル14はZ方向にスムーズに移動することが可能とされている。また、昇降テーブル14は、図2に示すように、モータMzの駆動力をタイミングベルト、ワイヤ、プーリ等からなる動力伝達機構により伝達することにより、上下方向に所定間隔(例えば0.1mmピッチ)で移動する。モータMzは、例えば、サーボモータ、ステッピングモータなどが好適である。なお、実際の昇降テーブル14の高さ方向の位置を連続的又は間欠的にリアルタイムで、図示しない位置センサを用いて測定し、適宜補正をかけることによって、昇降テーブル14の位置精度を高めるようにしてもよい。後述する造形ヘッド25A、25Bについても同様である。
XYステージ12は、この昇降テーブル14の上面に載置されている。図3は、このXYステージ12の概略構成を示す斜視図である。XYステージ12は、枠体21と、Xガイドレール22と、Yガイドレール23と、リール24A、24Bと、造形ヘッド25A、25Bと、造形ヘッドホルダHを備えている。Xガイドレール22は、その両端がYガイドレール23に嵌め込まれ、Y方向に摺動自在に保持されている。リール24A、24Bは、造形ヘッドホルダHに固定されており、造形ヘッドホルダHによって保持された造形ヘッド25A、25Bの動きに追従してXY方向を移動する。造形物Sの材料となる熱可塑性樹脂は、径が3~1.75mm程度の紐状の樹脂(フィラメント38A、38B)であり、通常リール24A,24Bに捲かれた状態で保持されているが、造形時には後述する造形ヘッド25A,25Bに設けられたモータ(エクストルーダ)によって造形ヘッド25A,25B内に送り込まれる。
なお、図1~図3では、造形ヘッド25Aは、フィラメント38Aを溶融・吐出するよう構成され、造形ヘッド25Bは、フィラメント38Bを溶融し吐出するよう構成され、異なるフィラメントのためにそれぞれ独立の造形ヘッドが用意されている。しかし、本発明はこれに限定されるものではなく、単一の造形ヘッドのみを用意し、単一の造形ヘッドにより複数種類のフィラメント(樹脂材料)を選択的に溶融・吐出させるような構成も採用することができる。
次に、図4のブロック図を参照してドライバ300の構造の詳細について説明する。ドライバ300は、CPU301、フィラメント送り装置302、ヘッド制御装置303、電流スイッチ304、及びモータドライバ306を含んでいる。
(i)1つの造形ユニットUpのサイズ
(ii)複数の造形ユニットUpの造形順序
(iii)造形ユニットUp内で使用される複数種類の樹脂材料の種類
(iv)造形ユニットUp内での異なる種類の樹脂材料の配合比率(配合比)
(v)造形ユニットUp内での同種の樹脂材料を連続的に形成する方向(以下、「造形方向」という)
なお、造形指示部204は、キーボードやマウス等の入力デバイスから指示データの入力を受けるものであってもよいし、造形内容を記憶した記憶装置から指示データを提供されるものであってもよい。
なお、図6、図7では、1つの層において樹脂材料R1、R2が隙間なく接触する構造を図示しているが、造形物Sの構造はこれに限定されるものではない。1つの層において横方向に隣接する樹脂材料間には、隙間が生じていても良い。
続いて、図8(b)に示すように、樹脂材料R1の間隔を埋めるように、樹脂材料R2を、同様に略1:1の配列ピッチで形成する。このとき、樹脂材料R2は、樹脂材料R1の外周形状に沿って、2つの樹脂材料R1の間隔を埋めるように形成することができる。このようにすることで、樹脂材料R1とR2の間の接合を強固にすることができる。
続いて、図8(d)に示すように、樹脂材料R2の間隔を埋めるように、樹脂材料R1を、同様に1:1の配列ピッチで形成する。このとき、樹脂材料R1は、樹脂材料R2の外周形状に沿って、2つの樹脂材料R2の間隔を埋めるように形成することができる。このようにすることで、樹脂材料R1とR2の間の接合を強固にすることができる。
上述の図8(a)~(d)に示した手順を繰り返すことにより、上述の井桁構造の造形物Sが出来上がる。
なお、図8(c)、(d)では、第2の層において、樹脂材料R2を先に所定の配列ピッチで形成し、その後樹脂材料R1を樹脂材料R2の隙間に埋め込むようにし、第1の層と第2の層とで樹脂材料R1、R2の形成順序を異ならせていた。これに変えて、いずれの層においても、特定の樹脂材料(例えば樹脂材料R1)を先に形成し、その後別の樹脂材料(例えば樹脂材料R2)をその隙間に埋め込むようにしてもよい。ただし、層ごとに樹脂材料R1、R2の形成手順を変えた方が、上下方向の樹脂材料の接合をより強固にすることができ好ましい。
このとき、造形ユニットUpの1つの層においては、一方向(例えばX方向)を長手方向として樹脂材料R1、R2が所定の配列ピッチで互いに隣り合うように形成されるが、隣接する造形ユニットUp’では、同じ層においては異なる方向(例えばY方向)を長手方向として樹脂材料R1、R2が連続的に形成される。これが各層において繰り返されることにより、例えば図6、図7に示すような構造が形成される。
なお、複数の層の積層は、図15に示すように、各層をZ方向に平行に積層させていくこともできるが、これに代えて、例えば図16に示すように、XY方向にずれる形での積層であってもよい(図16は、X方向、Y方向にそれぞれ半ピッチずつずれる場合を例示している)。
図17~図19は、造形物Sの変形例を示す。
図6及び図7の造形物Sは、1つの層においては樹脂材料R1、R2は一方向(X方向又はY方向)に沿って延びる直線形状を有し、その1つ上の層においては、樹脂材料R1、R2はこれと直交(交差角90度)する方向に延びる直線形状を有している。しかし、これに代えて、例えば図17に示すように、上下の層における樹脂材料R1、R2の交差角度を90°以外の角度に設定することもできる。この構造の場合、上下層における同一の樹脂材料間の接合面積が90°の場合に比べ大きくなり、図6及び図7の場合に比べ造形物Sの強度を大きくすることができる。
また、図6、及び図7の例では、各層における樹脂材料R1、R2はある一方向を長手方向とする直線形状を有しているが、これに代えて、例えば図18に示すように、各樹脂材料R1、R2は、その軸方向が一方向を長手方向としている(換言すれば、全体として一方向に連続的に形成されている)波線形状を有していても良い。
また、図18の波線形状の樹脂材料R1、R2は、その中心線又は包絡線は直線形状であるが、図19に示すように、その中心線又は包絡線自体が波線形状であってもよい。この図19の樹脂材料R1、R2も、全体としては一の方向を長手方向として延びるように形成されている。要するに、本実施の形態の造形物Sは、上下の層において同一の樹脂材料が互いに交差するように形成され、その交差部において接合する形状を有していればよい。
マスタ3Dデータには、造形物Sの各構成点における座標(X,Y,Z)と、その構成点における樹脂材料R1、R2の配合比を示すデータ(Da、Db)が含まれる。以下では、各構成点のデータをDs(X、Y、Z、Da、Db)のように標記する。なお、使用する樹脂材料が3種類以上である場合、データDa、Dbに加えて、当該樹脂材料の配合比を示すータDc、Dd・・・が構成点データDsに追加される。
次に、空間フィルタ処理部201では、マスタ3Dデータが示す造形空間を、指示された造形ユニットサイズSuに基づいて複数の造形ユニットUpに分割する(S13)。造形ユニットUpは、図21に示すように、XYZ方向において造形物Sの造形空間を分割した矩形状の空間である。
以上説明したように、本実施の形態の三次元造形装置によれば、第1の層においては、複数種類の樹脂材料が第1の方向に沿って形成され、且つ第1の方向と交差する第2の方向において複数種類の樹脂材料が並ぶように造形ヘッド24A、24Bが制御される。そして、第1の層の上部の第2の層においては、複数種類の樹脂材料が、第1の方向と交差する第3の方向に沿って形成され、且つ第3方向とは交差する第4の方向において複数種類の樹脂材料が並ぶように造形ヘッド25A、25Bが制御される。これにより、造形物の中において、複数種類の樹脂材料がいわゆる井桁構造に組み込まれ、複数材料を複合的に用いた造形物を生成する場合においても、高さ方向に同一の材料が接する点が存在するので、異なる複数の材料の間の接合を総合的に強固にすることができる。
また、複数種類の樹脂材料を1つの造形物において使用することにより、複数種類の樹脂材料の長所を併せ持った造形物を提供することが可能になる。例えば、材料は一般的に強度と柔軟性は相反する特性を持ち、両者を兼ね備えた材料の開発、生産は工業的に極めて難しいとされる。しかしながら本発明の造形装置によれば、例えば強度の高い樹脂材料R1と、柔軟性の高い樹脂材料R2を用いて井桁構造を構成することにより、強度が高く、且つ柔軟性の高い樹脂材料を実現することができる。
また樹脂材料R1と樹脂材料R2の構成比を可変させることにより、強度と柔軟性特性を自在に可変することもできる。
また従来技術では離散的な値しか実現できなかった材料の密度が、連続した値の材料密度を実現することができる。
また従来は宇宙空間のような無重力状態でしか実現できなかった比重が大きく異なる材料同士の混合材料も、この造形装置により実現することができる。
次に、本発明の第2の実施の形態に係る三次元造形装置を、図22及び図23を参照して説明する。第2の実施の形態の三次元造形装置は、その全体構成、及び基本的な動作並びに形成され得る造形物Sは第1の実施の形態と同様であるので、以下では重複する説明は省略する。
この第2の実施の形態は、造形ヘッド25A、25Bの構造が第1の実施の形態とは異なっている。
同様に、造形ヘッド25Bも、それぞれ造形方向と直交する方向に一列に並ぶ複数(図示の例では4個)の吐出孔NB1~NB4を備えている。なお、吐出孔NA1~NA4、NB1~NB4は、決定された造形方向に従い、それと直交する方向に並ぶよう制御される。
このような造形ヘッドを用いることにより、造形効率を第1の実施の形態に比べ向上させることができる。
以上、本発明のいくつかの実施の形態を説明したが、これらの実施の形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施の形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施の形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。
そして、このようにして積層された多数の樹脂板上に、再度加圧板42及び加熱板43を載置し、この積層された樹脂板に対し加圧をしつつ所定の温度まで加熱する。これにより、上記実施の形態と同様の造形物Sが完成する。
なお樹脂材料R1、R2が安定的に保持できるのであれば、固定具41は省略することも可能である。
なお第1の実施の形態、第2の実施の形態、図24A~Dの実施の形態のいずれも場合も、接着剤(接着性樹脂)や密着剤(表面処理剤、表面改質剤、カップリング剤)を、外部から散布しながら造形を行ってもよい。ここで接着剤(接着性樹脂)の例としては、樹脂材料R1とR2の界面に入り込んで隙間を埋める機能を有する材料である。また密着剤(表面処理剤、表面改質剤、カップリング剤)の例としては、樹脂材料R1またはR2またはR1、R2双方の表面が官能基を有するように表面を活性化させる機能を有する材料である。このようにすると、樹脂材料R1とR2が互いに親和性の低い関係にある樹脂の場合でも、樹脂材料R1とR2は互いに親和性が増し、強固に結びつくので、破壊強度が必要な用途に適用することができる。
本実施の形態に従って生成される造形物Sの各種具体例(用途)について、以下に説明する。本実施の形態の造形物Sは、以下に説明するように、様々な用途に使用され得る。
造形物Sの第1の具体例を図25に示す。この第1の具体例は、造形物Sを電子回路用のプリント基板の材料として適用したものである。
プリント基板の材料には、一般的には熱硬化性樹脂とガラス繊維を組み合わせたガラスエポキシ樹脂が用いられる。しかし、ガラス繊維の誘電率は6.13程度と非常に大きい。このため、プリント基板が搭載される回路においてガラスエポキシ樹脂が寄生容量として作用し、特に高周波回路において伝送損失や伝送遅延が大きくなり、エラーが発生する虞がある。なおここで熱可塑性樹脂の混合により、全体の誘電率を下げることは可能だが、実使用にて140℃前後の耐熱性はプリント基板として必要なことから、一概に熱可塑性樹脂の混合量を増やすことはできない。
なお、樹脂材料R1、R2の材料、及びその配合比等は、求められるプリント基板の特性に従って任意に選択することができる。
次に、造形物Sの第2の具体例を図26に示す。この第2の具体例は、造形物Sを電磁波制御素子として適用したものである。
なお、この第2の具体例において、メインフレーム材料R0を省略し、樹脂材料R1及びR2のみにより造形物S(電磁波制御素子)を形成することも可能である。
次に、造形物Sの第3の具体例を図27に示す。この第3の具体例は、造形物Sを音波吸収素子の材料に適用したものである。
この図26の造形物Sも、同様に樹脂材料R1とR2を井桁構造に積層させて形成され得る。なお、第2の具体例と同様に、樹脂材料R1とR2に加え、造形物Sの骨組となるメインフレーム材料R0を追加することも可能である。
次に、造形物Sの第4の具体例を図28に示す。この第4の具体例は、造形物Sを衝撃吸収素子の材料に適用したものである。衝撃吸収素子としては、従来は柔軟性の高い発泡材や、ゲル化された材料を使用することが多い。しかし、発砲材やゲル化材料は通気性に劣るという問題がある。この第4の具体例の造形物Sは、次の特徴を有することにより、上記の通気性の問題を解消した衝撃吸収素子を提供することを可能にしている。
Claims (12)
- 造形物が載置される造形ステージと、
前記造形ステージに対し少なくとも垂直方向に移動可能な昇降部と、
前記昇降部に搭載され材料が異なる複数種類の樹脂材料の供給を受ける造形ヘッドと、
前記昇降部及び前記造形ヘッドを制御する制御部と、
を備え、
前記制御部は、第1の層において、前記複数種類の樹脂材料のうちの第1の樹脂材料が第1の方向に連続的に形成され且つ前記第1方向と交差する第2方向において隙間を空けて配列されると共に、前記複数種類の樹脂材料のうちの前記第1の樹脂材料以外の第2の樹脂材料が、前記第1方向に連続的に形成され且つ前記隙間に配列されるように前記造形ヘッドを制御し、
前記制御部は更に、前記第1の層の上部の第2の層において、前記第1の樹脂材料が、前記第1方向とは交差する第3の方向に連続的に形成され且つ前記第3方向と交差する第4方向において隙間を空けて配列されると共に、前記第2の樹脂材料が、前記第3方向に連続的に形成され且つ前記隙間に配列され、これにより前記第1の層に形成された前記第1の樹脂材料と、前記第2の層に形成された前記第1の樹脂材料とが上下方向で接合し、且つ更に前記第1の層に形成された前記第2の樹脂材料と、前記第2の層に形成された前記第2の樹脂材料とが上下方向で接合するよう、前記造形ヘッドを制御する
ことを特徴とする三次元造形装置。 - 前記制御部は、
座標データ、及び前記座標データが示す位置における前記複数種類の樹脂材料の配合比率を表す配合比データを含む造形物データを受信し、この造形物データに従って、前記造形ヘッドを制御する
ことを特徴とする請求項1記載の三次元造形装置。 - 前記制御部は、前記造形物が形成される領域を複数の造形ユニットに分割し、
前記複数の造形ユニットの各々に、対応する前記造形物データに対応するプロパティデータを付与し、
前記プロパティデータに従って、前記造形ユニットの各々において前記複数種類の各々の密度変調及び造形方向を決定する
ことを特徴とする請求項2記載の三次元造形装置。 - 前記制御部は、前記第1の層において、前記第1の樹脂材料を形成した後、前記第2の樹脂材料を形成し、前記第2の層において、前記第2の樹脂材料を形成した後、前記第1の樹脂材料を形成するよう前記造形ヘッドを制御する、請求項1記載の三次元造形装置。
- 複数種類の樹脂材料を含む造形物であって、
第1の層と第2の層とを含み、
第1の層は、複数種類の樹脂材料のうちの第1の樹脂材料が第1の方向に連続的に形成され且つ前記第1方向と交差する第2方向において隙間を空けて配列されると共に、前記複数種類の樹脂材料のうちの前記第1の樹脂材料以外の第2の樹脂材料が、前記第1方向に連続的に形成され且つ前記隙間に配列された部分を含み、
前記第1の層の上部の第2の層は、前記第1の樹脂材料が、前記第1方向とは交差する第3の方向に連続的に形成され且つ前記第3方向と交差する第4方向において隙間を空けて配列されると共に、前記複数種類の樹脂材料のうちの前記第2の樹脂材料が、前記第3方向に連続的に形成され且つ前記隙間に配列され、これにより前記第1の層に形成された前記第1の樹脂材料と、前記第2の層に形成された前記第1の樹脂材料とが上下方向で接合し、且つ更に前記第1の層に形成された前記第2の樹脂材料と、前記第2の層に形成された前記第2の樹脂材料とが上下方向で接合されている部分を含む
ことを特徴とする造形物。 - 前記第1の層、及び前記第2の層は、それぞれ複数のユニットに分割され、互いに隣接する前記複数のユニットでは、前記第1の樹脂材料及び前記第2の樹脂材料が連続的に形成される方向が互いに異なる、請求項5記載の造形物。
- 前記第1の樹脂材料及び前記第2の樹脂材料は、異なる誘電率を有する、請求項5記載の造形物。
- 前記の樹脂材料及び前記第2の樹脂材料は、異なる剛性を有する、請求項5記載の造形物。
- 前記第2の樹脂材料により充填されず残存した前記隙間を備える、請求項5記載の造形物。
- 造形ヘッドを備えた三次元造形装置の制御方法において、
第1の層において、複数種類の樹脂材料のうちの第1の樹脂材料が第1の方向に連続的に形成され且つ前記第1方向と交差する第2方向において隙間を空けて配列されると共に、前記複数種類の樹脂材料のうちの前記第1の樹脂材料以外の樹脂材料が、前記第1方向に連続的に形成され且つ前記隙間に配列されるように前記造形ヘッドを制御するステップと、
前記第1の層の上部の第2の層において、前記第1の樹脂材料が、前記第1方向とは交差する第3の方向に連続的に形成され且つ前記第3方向と交差する第4方向において隙間を空けて配列されると共に、前記第1の樹脂材料以外の樹脂材料が、前記第3方向に連続的に形成され且つ前記隙間に配列され、これにより、前記第1の層に形成された前記第1の樹脂材料と、前記第2の層に形成された前記第1の樹脂材料とが上下方向で接合し、且つ更に前記第1の層に形成された前記第1の樹脂材料以外の樹脂材料と、前記第2の層に形成された前記第1の樹脂材料以外の樹脂材料とが上下方向で接合されるように前記造形ヘッドを制御するステップと
を備えたことを特徴とする、三次元造形装置の制御方法。 - 座標データ、及び前記座標データが示す位置における前記複数種類の樹脂材料の配合比率を表す配合比データを含む造形物データを受信し、この造形物データに従って、前記造形ヘッドが制御される
ことを特徴とする請求項10記載の制御方法。 - 前記造形物が形成される領域を複数の造形ユニットに分割するステップと、
前記複数の造形ユニットの各々に、対応する前記造形物データに対応するプロパティデータを付与するステップと、
前記プロパティデータに従って、前記造形ユニットの各々において前記複数種類の各々の密度変調及び造形方向を決定するステップと
を更に備えたことを特徴とする、請求項11記載の制御方法。
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| DE112015005967.9T DE112015005967T8 (de) | 2015-01-15 | 2015-09-29 | 3D-Formungseinrichtung, Steuerverfahren davon und Formungsobjekt derselben |
| KR1020167003546A KR101766605B1 (ko) | 2015-01-15 | 2015-09-29 | 3차원 조형 장치와, 그의 제어 방법 및 그의 조형물 |
| JP2016502832A JP5909309B1 (ja) | 2015-01-15 | 2015-09-29 | 三次元造形装置、及びその造形物 |
| CN201580001696.2A CN105992687B (zh) | 2015-01-15 | 2015-09-29 | 三维造形装置、及其控制方法、与其造形物 |
| US15/543,777 US20170368758A1 (en) | 2015-01-15 | 2015-09-29 | Three-dimensional shaping apparatus, method of controlling same, and shaped object of same |
| JP2016006018A JP6636341B2 (ja) | 2015-01-15 | 2016-01-15 | 三次元造形物の製造方法 |
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| JP2017024246A (ja) * | 2015-07-21 | 2017-02-02 | 武藤工業株式会社 | 複合樹脂材料 |
| JPWO2017130515A1 (ja) * | 2016-01-25 | 2018-08-16 | 武藤工業株式会社 | 三次元造形装置、及びその制御方法、並びにその造形物 |
| JPWO2017082207A1 (ja) * | 2015-11-10 | 2018-09-27 | 武藤工業株式会社 | 造形物の製造方法及び造形物 |
| JP2018154108A (ja) * | 2017-03-16 | 2018-10-04 | 株式会社ミマキエンジニアリング | 造形物の製造装置、造形物の製造方法及び造形物 |
| JPWO2018207242A1 (ja) * | 2017-05-08 | 2020-05-14 | 武藤工業株式会社 | 三次元造形装置、及びその制御方法、並びにその造形物 |
| JP2020082628A (ja) * | 2018-11-29 | 2020-06-04 | 株式会社リコー | 造形装置、造形方法、及び造形プログラム |
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- 2015-09-29 US US15/543,777 patent/US20170368758A1/en not_active Abandoned
- 2015-09-29 CN CN201580001696.2A patent/CN105992687B/zh active Active
- 2015-09-29 WO PCT/JP2015/077554 patent/WO2016113955A1/ja not_active Ceased
- 2015-10-30 TW TW104135925A patent/TWI701130B/zh active
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| JP2017024246A (ja) * | 2015-07-21 | 2017-02-02 | 武藤工業株式会社 | 複合樹脂材料 |
| JPWO2017082207A1 (ja) * | 2015-11-10 | 2018-09-27 | 武藤工業株式会社 | 造形物の製造方法及び造形物 |
| JPWO2017130515A1 (ja) * | 2016-01-25 | 2018-08-16 | 武藤工業株式会社 | 三次元造形装置、及びその制御方法、並びにその造形物 |
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| JPWO2018207242A1 (ja) * | 2017-05-08 | 2020-05-14 | 武藤工業株式会社 | 三次元造形装置、及びその制御方法、並びにその造形物 |
| JP2020082628A (ja) * | 2018-11-29 | 2020-06-04 | 株式会社リコー | 造形装置、造形方法、及び造形プログラム |
| JP7154117B2 (ja) | 2018-11-29 | 2022-10-17 | エス.ラボ株式会社 | 造形装置、造形方法、及び造形プログラム |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6556652B2 (ja) | 2019-08-07 |
| DE112015005967T8 (de) | 2017-11-02 |
| JP6636341B2 (ja) | 2020-01-29 |
| JP2016135607A (ja) | 2016-07-28 |
| TW201625405A (zh) | 2016-07-16 |
| TWI701130B (zh) | 2020-08-11 |
| CN105992687A (zh) | 2016-10-05 |
| CN105992687B (zh) | 2018-01-02 |
| KR20160110347A (ko) | 2016-09-21 |
| JP2016135597A (ja) | 2016-07-28 |
| DE112015005967T5 (de) | 2017-10-12 |
| US20170368758A1 (en) | 2017-12-28 |
| KR101766605B1 (ko) | 2017-08-08 |
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