WO2024150294A1 - Appareil de modélisation tridimensionnelle - Google Patents

Appareil de modélisation tridimensionnelle Download PDF

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Publication number
WO2024150294A1
WO2024150294A1 PCT/JP2023/000379 JP2023000379W WO2024150294A1 WO 2024150294 A1 WO2024150294 A1 WO 2024150294A1 JP 2023000379 W JP2023000379 W JP 2023000379W WO 2024150294 A1 WO2024150294 A1 WO 2024150294A1
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WO
WIPO (PCT)
Prior art keywords
rotating roller
fluid
discharge unit
discharge
dimensional modeling
Prior art date
Application number
PCT/JP2023/000379
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English (en)
Japanese (ja)
Inventor
辰巳 菱川
精一 柚山
Original Assignee
スターテクノ株式会社
エス．ラボ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by スターテクノ株式会社, エス．ラボ株式会社 filed Critical スターテクノ株式会社
Priority to PCT/JP2023/000379 priority Critical patent/WO2024150294A1/fr
Publication of WO2024150294A1 publication Critical patent/WO2024150294A1/fr

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    • 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
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/205—Means for applying layers
    • B29C64/209—Heads; Nozzles
    • 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
    • B29C64/205—Means for applying layers
    • B29C64/218—Rollers
    • 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

Definitions

  • the present invention relates to a three-dimensional modeling device that produces a three-dimensional object by stacking fluid while discharging it from the opening of a discharge unit.
  • three-dimensional modeling devices that produce three-dimensional objects by layering fluid while discharging it from the opening of a discharge section.
  • Patent Document 1 is recognized to describe an additive manufacturing device 1 that includes an applicator head 43 that ejects a thermoplastic material (hereinafter referred to as "fluid") from the opening of a nozzle 51, and a bead forming roller 59 arranged near the applicator head 43, and that moves the applicator head 43 to stack the thermoplastic material ejected from the applicator head 43, in which the bead forming roller 59 is positioned behind the direction of movement of the nozzle 51 (see the description in paragraph "0022", Figure 5, etc.).
  • a thermoplastic material hereinafter referred to as "fluid”
  • the bead forming roller 59 is positioned behind the movement direction of the nozzle 51, so when trying to change the movement direction of the nozzle 51, a subtle difference occurs between the movement direction of the nozzle 51 (hereinafter referred to as the "discharge section") and the movement direction of the bead forming roller 59, which creates a high possibility of unevenness occurring in the layered fluid.
  • the additive manufacturing device 1 (hereinafter referred to as the "three-dimensional modeling device"), it is important to ensure the strength of the additively manufactured object (hereinafter referred to as the "three-dimensional manufactured object”) that is to be stacked.
  • the present invention has been made in response to the above-mentioned problems with the conventional technology, and aims to provide a three-dimensional printing device that can stack fluid evenly while ensuring the strength of the three-dimensional object even when the movement direction of the discharge part is changed, and ultimately can stack and produce three-dimensional objects with good results.
  • the first aspect of the present invention is a three-dimensional modeling device that includes a discharge unit that discharges a hardenable fluid from an opening, and a rotating roller that can press the fluid discharged from the discharge unit, and that moves the discharge unit and the rotating roller to stack the fluid discharged from the discharge unit to produce a three-dimensional model, characterized in that the rotating roller is rotatable by itself and can rotate around the discharge unit.
  • the second aspect of the present invention is characterized in that in the three-dimensional modeling device of the first aspect, the distance between the discharge section and the rotating roller is half the length of the longitudinal direction of the rotating roller or is longer than the radius of the rotating roller.
  • the third aspect of the present invention is characterized in that in the three-dimensional modeling device of the first aspect, the rotating roller is capable of changing its height relative to the discharge section, is capable of rotating along the trajectory of the discharge section, and is capable of moving away from the fluid discharged from the discharge section when the movement direction of the discharge section and the movement direction of the rotating roller are different.
  • the fourth aspect of the present invention is characterized in that in the three-dimensional modeling device of the second aspect, the rotating roller is capable of changing its height relative to the discharge section, is capable of rotating along the trajectory of the discharge section, and is capable of moving away from the fluid discharged from the discharge section when the movement direction of the discharge section and the movement direction of the rotating roller are different.
  • the fifth aspect of the present invention is characterized in that in the three-dimensional modeling device of the third aspect, the discharge unit stops discharging the fluid while the rotating roller is separated from the fluid.
  • the sixth aspect of the present invention is characterized in that in the three-dimensional modeling device of the fourth aspect, the discharge unit stops discharging the fluid while the rotating roller is separated from the fluid.
  • the seventh aspect of the present invention is characterized in that in the three-dimensional modeling device of any of the first to sixth aspects, the rotating roller can move back a predetermined distance after moving away from the fluid and begin pressing the fluid discharged from the discharge section.
  • the first aspect of the present invention provides a three-dimensional modeling device that includes a discharge unit that discharges a hardenable fluid from an opening, and a rotating roller that can press the fluid discharged from the discharge unit, and that moves the discharge unit and the rotating roller to stack the fluid discharged from the discharge unit to produce a three-dimensional object. Since the rotating roller is rotatable by itself and can rotate around the discharge unit, even if the direction of movement of the discharge unit is changed, the fluid can be stacked evenly while ensuring the strength of the three-dimensional object, and thus the three-dimensional object can be stacked well to produce the three-dimensional object.
  • the distance between the discharge unit and the rotating roller is set to half the longitudinal length of the rotating roller or longer than the radius of the rotating roller, so that in addition to the effects of the three-dimensional modeling device of the first aspect, when the movement direction of the discharge unit is changed, the rotating roller can be rotated more freely, and thus three-dimensional objects can be stacked and manufactured more effectively.
  • the rotating roller is capable of changing its height relative to the discharge section, is capable of rotating along the trajectory of the discharge section, and is capable of moving away from the fluid discharged from the discharge section when the movement direction of the discharge section and the movement direction of the rotating roller are different. Therefore, in addition to the effect of the three-dimensional modeling device of the first aspect, the fluid can be layered evenly while ensuring the strength of the three-dimensional model, and thus the three-dimensional model can be layered and manufactured even better.
  • the rotating roller is capable of changing its height relative to the discharge section, is capable of rotating along the trajectory of the discharge section, and is capable of moving away from the fluid discharged from the discharge section when the movement direction of the discharge section and the movement direction of the rotating roller are different. Therefore, in addition to the effect of the three-dimensional modeling device of the second aspect, the fluid can be layered evenly while ensuring the strength of the three-dimensional model, and thus the three-dimensional model can be layered and manufactured even better.
  • the discharge unit stops discharging the fluid while the rotating roller is separated from the fluid, so that in addition to the effect of the three-dimensional modeling device of the third aspect, the fluid can be layered more evenly, and ultimately the three-dimensional object can be layered and manufactured more satisfactorily.
  • the discharge unit stops discharging the fluid while the rotating roller is separated from the fluid, so that in addition to the effect of the three-dimensional modeling device of the fourth aspect, the fluid can be layered more evenly, and ultimately the three-dimensional object can be layered and manufactured more satisfactorily.
  • the rotating roller can move away from the fluid, then move back a predetermined distance and begin to press the fluid discharged from the discharge section, so that in addition to the effect of the three-dimensional modeling device of any of the first to sixth aspects, the fluid can be layered evenly, and ultimately a three-dimensional object can be layered and manufactured more satisfactorily.
  • FIG. 1 is an overall perspective view of a three-dimensional modeling apparatus according to a first embodiment of the present invention
  • FIG. 2 is an overall perspective view of the coater of the first embodiment, showing a state in which a rotating roller is raised relative to a discharge portion.
  • FIG. 2 is an overall perspective view of the coater of the first embodiment, showing a state in which a rotating roller is lowered relative to a discharge portion.
  • FIG. 4 is a rear view of FIG. 3 .
  • FIG. 1 is a block diagram of a three-dimensional modeling apparatus according to a first embodiment.
  • FIG. 2 is a block diagram of a main controller of the three-dimensional modeling apparatus according to the first embodiment.
  • 5 is a flowchart of a three-dimensional modeling program in the three-dimensional modeling apparatus according to the first embodiment.
  • 10 is a flowchart of an N-layer coating program in the three-dimensional modeling apparatus of the first embodiment.
  • 13 is a flowchart of a curved region coating program in the three-dimensional modeling apparatus according to the first embodiment.
  • 13 is a flowchart of a pump rotation interrupt processing program in the three-dimensional modeling apparatus according to the first embodiment.
  • 10 is a flowchart of a temperature adjustment unit interrupt processing program in the three-dimensional modeling apparatus according to the first embodiment.
  • 13 is a diagram showing the state in which the applicator is moved to the modeling table with the rotating roller raised and before the fluid is discharged from the discharge portion.
  • FIG. 13 is a diagram showing a state in which a fluid is being discharged from a discharge portion with a gap between the rotating roller and the modeling table set to D1.
  • FIG. 13 is a diagram showing a state in which a fluid is being discharged from a discharge portion with a gap between the rotating roller and the modeling table set to D2 (a distance smaller than D1).
  • FIG. FIG. 13 is a diagram showing a state in which a fluid is being discharged from a discharge portion with the rotating roller raised.
  • 13 is an explanatory diagram (bottom view) showing an example of an operating state of the discharge unit and the rotating roller in the first stage in the curved region coating program.
  • FIG. 13 is an explanatory diagram (bottom view) showing an example of an operating state of the discharge unit and the rotating roller in a second stage in the curved region coating program.
  • FIG. 13 is an explanatory diagram (bottom view) showing an example of an operating state of the discharge unit and the rotating roller in a third stage in the curved region coating program.
  • FIG. 13 is an explanatory diagram (bottom view) showing an example of an operating state of the discharge unit and the rotating roller in the final stage in the curved region coating program.
  • FIG. 13 is a diagram showing an example of a state in which a three-dimensional object is being formed while rotating rollers keep the distance between each layer constant.
  • 11A to 11C are diagrams illustrating an example of a state in which a three-dimensional object is being formed while the distance between each layer is changed by the rotating rollers.
  • FIG. 13 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and the rotating roller in the first stage when the coater of the second embodiment is used in the curved region coating program.
  • FIG. 11 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and the rotating roller in the second stage when the coater of the second embodiment is used in the curved region coating program.
  • FIG. 13 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and the rotating roller in the third stage when the coater of the second embodiment is used in the curved region coating program.
  • FIG. 11 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and the rotating roller in the fourth stage when the coater of the second embodiment is used in the curved region coating program.
  • FIG. 11 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and the rotating roller in the fifth stage when the coater of the second embodiment is used in the curved region coating program.
  • FIG. 13 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and the rotating roller in the final stage when the coater of the second embodiment is used in the curved region coating program.
  • FIG. 1 is an overall perspective view of a three-dimensional modeling apparatus according to the first embodiment of the present invention.
  • the three-dimensional modeling device 1 of this embodiment produces a three-dimensional object by layering a hardenable fluid R (see FIG. 20 and FIG. 21) on a flat plate-shaped modeling table P arranged in a housing H, and is equipped with the housing H, a movable table 59 that moves in the +Y and -Y directions on the housing H, a head unit 3 having an applicator 3a that ejects and layers the fluid R on the modeling table P and a processing machine 3b that shapes the model layered on the modeling table P and hardened, a control panel 2 that controls the operation of the movable table 59 and the head unit 3, an operation panel 8 that allows an operator M of the three-dimensional modeling device 1 to send commands to the three-dimensional modeling device 1, and a tank 80 for storing powder before it becomes fluid R.
  • a hardenable fluid R see FIG. 20 and FIG. 21
  • the fluid R used in this embodiment must be a material that has fluidity before being discharged from the discharge unit 7 (see FIG. 2) described below, and that can be hardened after being discharged from the discharge unit 7.
  • materials that can be used include thermoplastic resins such as ABS resin (acrylonitrile butadiene styrene resin), ASA resin (acrylonitrile styrene acrylic ester resin), PC-ABS resin (polycarbonate acrylonitrile butadiene styrene resin), PLA (polylactic acid resin), nylon 6, nylon 12, polycarbonate, and polypropylene, photocurable resins, gypsum, and wax.
  • the fluid R used in this embodiment is nylon 6 (melting point: 225°C).
  • the housing H has a hollow rectangular parallelepiped shape formed by three walls 79a, 79b, and 79c and a beam 79d in an approximately square shape, and the upper part of the walls 79a and 79c is provided with toothed racks 55a and 55b for moving the moving platform 59 in the +Y and -Y directions.
  • the moving platform 59 operates the Y-axis slide motor 37 (see Figure 5) located within the moving platform 59 in response to commands from the main controller 4 (see Figure 5) located within the control panel 2, and moves in the +Y and -Y directions on the racks 55a and 55b together with the head unit 3 equipped with the applicator 3a and the processor 3b.
  • the movable stage 59 also has a toothed rack 57 on the side for moving the head unit 3 in the +X and -X directions.
  • the head unit 3 includes an applicator 3a that ejects and layers fluid R on the modeling table P, and a processor 3b that shapes the fluid R that has been layered and hardened on the modeling table P.
  • the head unit 3 operates an X-axis slide motor 35 (see Figure 5) located in the head unit 3, causing it to move in the +X and -X directions on the rack 57 of the moving table 59.
  • the processing machine 3b includes a processing machine body 45, a processing machine Z-axis slide motor 27 for moving the processing machine body 45 in the +Z and -Z directions, a trimmer 41 disposed at the tip of the processing machine body 45 for shaping the object that has been stacked and hardened on the modeling table P, a processing machine rotation motor 29 (see Figure 5) disposed within the processing machine body 45 for rotating the trimmer 41 relative to the arm 47, and a processing machine drive motor 31 for driving the trimmer 41.
  • Figure 2 is an overall perspective view of the applicator of the first embodiment, showing the rotating roller raised relative to the discharge section
  • Figure 3 is an overall perspective view of the applicator, showing the rotating roller lowered relative to the discharge section
  • Figure 4 is a rear view of Figure 3.
  • the coater 3a includes a coater body 43, a coater Z-axis slide motor 39 for moving the coater body 43 in the +Z and -Z directions, and a discharge unit 7 disposed at the tip of the coater body 43 for discharging fluid R onto the modeling table P.
  • the coating machine 3a is also provided with a rotating roller rotation movement motor 9 arranged in the coating machine body 43, which rotates the rotating roller 5 described later around the discharge section 7, a motor gear 11 connected to the motor shaft of the rotating roller rotation movement motor 9, a driven gear 13 screwed into the motor gear 11, a rotating shaft 15 formed integrally with the driven gear 13, a rotating lever 17 with one end connected to the rotating shaft 15, a rotating roller rotation movement motor 22 connected to the other end of the rotating lever 17 for rotating the rotating roller 5 itself described later, a motor gear 24 connected to the motor shaft of the rotating roller rotation movement motor 22, a driven gear 26 screwed into the motor gear 24, a rotating guide 28 which rotates coaxially with the driven gear 26, and a rotating roller 5 rotatably connected to the rotating guide 28.
  • a rotating roller rotation movement motor 9 arranged in the coating machine body 43, which rotates the rotating roller 5 described later around the discharge section 7, a motor gear 11 connected to the motor shaft of the rotating roller rotation movement motor 9, a driven gear 13 screwed into the motor gear 11,
  • the applicator 3a also includes a rotating roller up-down movement motor 23 arranged in the applicator body 43, a motor gear (not shown) connected to the motor shaft of the rotating roller up-down movement motor 23, a driven gear (not shown) that screws into the motor gear (not shown), a ball screw (not shown) that is connected coaxially with the driven gear (not shown), and a rotating shaft 15 that screws into the ball screw (not shown).
  • the distance P1 between the center of the discharge portion 7 and the center of the rotation axis of the rotating roller 5 is configured to be longer than the radius R1 of the rotating roller 5 (see FIG. 16). Therefore, the rotating roller 5 can rotate 360° without any restrictions.
  • the rotating roller 5 can rotate within a range that does not come into contact with the discharge section 7.
  • FIG. 2 shows the rotating roller 5 raised relative to the discharge portion 7, in which the rotating roller 5 does not come into contact with the fluid R discharged from the discharge portion 7, while FIG. 3 shows the rotating roller 5 lowered relative to the discharge portion 7, in which the rotating roller 5 comes into contact with the fluid R discharged from the discharge portion 7.
  • the applicator 3a also includes a rotating roller temperature sensor 21 that is disposed on the rotating roller 5 and detects the temperature of the rotating roller 5, and a rotating roller temperature adjustment unit 19 that adjusts the temperature of the rotating roller 5 based on the detection value of the rotating roller temperature sensor 21. As shown in Figures 2 to 4, the rotating roller temperature adjustment unit 19 is disposed inside the rotating shaft 25 of the rotating roller 5.
  • the discharge part 7 has a generally hollow cylindrical shape and includes a hollow cylindrical discharge part body 7a, a hollow tapered discharge tip part 7b with a tapered tip, and an opening 7c for discharging the fluid R.
  • the applicator 3a is configured to heat and melt the powder (not shown) stored in the tank 80 by a heater 36 (see FIG. 5) by driving a tank-side pump (not shown) arranged in a tank 80 installed outside the housing H by a tank-side pump drive motor 33 (see FIG. 5), and to cause the melted fluid R to flow from an inlet 51 via a tube 49, and to discharge the fluid R flowing into the applicator 3a from the tip of the discharge section 7 by driving a head-side pump (not shown) arranged in the applicator 3a by a head-side pump drive motor 34 (see FIG. 5).
  • an inflow pressure sensor 53 is provided near the inflow port 51 to detect the pressure of the fluid R flowing through the tube 49.
  • FIG. 5 is a block diagram of the three-dimensional modeling device of the first embodiment
  • FIG. 6 is a block diagram of the main controller of the three-dimensional modeling device of the first embodiment.
  • the control panel 2 is operated by an external power source 6 and includes a main controller 4, a first driver circuit 10 electrically connected to the main controller 4 for driving the tank side pump drive motor 33, head side pump drive motor 34, X-axis slide motor 35, Y-axis slide motor 37, coater Z-axis slide motor 39, rotating roller up/down movement motor 23, rotating roller rotation movement motor 9, rotating roller rotation movement motor 22, temperature adjustment unit 19 and heater 36 of the coater 3a, and a second driver circuit 12 electrically connected to the main controller 4 for driving the processing machine Z-axis slide motor 27, processing machine rotation motor 29 and processing machine drive motor 31 of the processing machine 3b.
  • a first driver circuit 10 electrically connected to the main controller 4 for driving the tank side pump drive motor 33, head side pump drive motor 34, X-axis slide motor 35, Y-axis slide motor 37, coater Z-axis slide motor 39, rotating roller up/down movement motor 23, rotating roller rotation movement motor 9, rotating roller rotation movement motor 22, temperature adjustment unit 19 and heater 36 of the coater 3a
  • the main controller 4 is also electrically connected to an operation panel 8 through which the operator M of the three-dimensional modeling device 1 sends commands to the three-dimensional modeling device 1, a rotating roller temperature sensor 21 for detecting the temperature of the rotating roller 5, and an inflow pressure sensor 53 for detecting the pressure of the fluid R flowing through the tube 49.
  • the main controller 4 includes a CPU (Central Processing Unit) 14, a RAM (Random Access Memory) 16 connected to the CPU 14 for input/output, and a ROM (Read Only Memory) 18 connected to the CPU 14 for input/output.
  • CPU Central Processing Unit
  • RAM Random Access Memory
  • ROM Read Only Memory
  • RAM 16 includes a three-dimensional modeling data table 16a that stores modeling data of the three-dimensional object to be manufactured (three-dimensional data of the object, height data of the rotating roller relative to the discharge section for each layer to be stacked, etc.), a rotating roller height instruction value 16b that stores data for setting the height of the rotating roller 5 relative to the discharge section 7, a pump rotation instruction value 16c that stores data for setting the rotation speed of the head-side pump drive motor 34, a roller temperature sensor instruction value 16d that stores the detection value of the rotating roller temperature sensor 21, a rotating roller temperature instruction value 16e that stores data for setting the temperature of the rotating roller 5, a discharge section movement angle value 16f that stores the angle by which the discharge section 7 moves, and a rotating roller movement angle value 16g that stores the angle by which the rotating roller 5 moves.
  • a three-dimensional modeling data table 16a that stores modeling data of the three-dimensional object to be manufactured (three-dimensional data of the object, height data of the rotating roller relative to the discharge section for each layer to be stacked, etc.)
  • the angle at which the ejection unit 7 is moving is automatically stored in the ejection unit movement angle value 16f of the RAM 16, and the angle at which the rotating roller 5 is moving is automatically stored in the rotating roller movement angle value 16g of the RAM 16.
  • the ROM 18 also includes a three-dimensional modeling program 18a that controls the overall operation of the coater 3a of this embodiment, an N-layer coating program 18b that controls the coating operation of the coater 3a for each layer, a curved region coating program 18c that controls the operation of the coater 3a when coating a curved region, a pump rotation interrupt processing program 18d for interrupt processing of the rotation speed of the head-side pump drive motor 34, and a temperature adjustment unit interrupt processing program 18e for interrupt processing of the temperature of the temperature adjustment unit 19.
  • a three-dimensional modeling program 18a that controls the overall operation of the coater 3a of this embodiment
  • an N-layer coating program 18b that controls the coating operation of the coater 3a for each layer
  • a curved region coating program 18c that controls the operation of the coater 3a when coating a curved region
  • a pump rotation interrupt processing program 18d for interrupt processing of the rotation speed of the head-side pump drive motor 34
  • a temperature adjustment unit interrupt processing program 18e for interrupt processing of the temperature of the temperature
  • FIG. 7 is a flowchart of a three-dimensional printing program in the three-dimensional printing device of the first embodiment
  • FIG. 8 is a flowchart of an N-layer coating program in the three-dimensional printing device
  • FIG. 9 is a flowchart of a curved region coating program in the three-dimensional printing device.
  • FIG. 10 is a flowchart of a pump rotation interrupt processing program in a three-dimensional modeling device
  • FIG. 11 is a flowchart of a temperature adjustment unit interrupt processing program in a three-dimensional modeling device.
  • a user M of the three-dimensional printing device 1 turns on the power switch of the device, selects a specific three-dimensional object using the operation buttons on the operation panel 8, and presses the start button.
  • the three-dimensional printing device 1 is then set to its initial state (S1), and three-dimensional printing data relating to the printing position and printing height for each layer corresponding to the selected three-dimensional object stored in the three-dimensional printing data table 16a of the RAM 16 is acquired (S3).
  • the head unit 3 In the initial state, the head unit 3 is set to the position shown in FIG. 1, and the applicator 3a and the processor 3b are set to a position retracted above the flat modeling table P on which the three-dimensional object is formed (see FIG. 1).
  • the parameter N indicating the layer to be formed by the coater 3a is set to "1" ("1" means the first layer) (S5), the coater 3a and the processing machine 3b are moved to the coating start position (S7), and the N-layer coating program 18b is executed (S9).
  • Figure 12 shows the state in which the applicator 3a is moved to the flat modeling table P with the rotating roller 5 raised, before the fluid R is ejected from the ejection section 7.
  • the height of the rotating roller 5 is set based on the three-dimensional modeling data stored in the three-dimensional modeling data table 16a (S31), and then the fluid R is ejected from the ejection unit 7 to perform coating from the coating start position (S33).
  • the rotating roller 5 can move in the +Z direction and the -Z direction relative to the discharge section 7, so that while discharging the fluid R from the discharge section 7, the gap between the rotating roller 5 and the modeling table P can be changed in various ways to apply the fluid R to the desired thickness.
  • Figure 13 shows a state in which the gap between the rotating roller 5 and the modeling table P is set to D1, and the applicator 3a is scanned in the +F direction while discharging fluid R from the discharge unit 7, while
  • Figure 14 shows a state in which the gap between the rotating roller 5 and the modeling table P is set to D2 (D2 is a distance smaller than D1), and the applicator 3a is scanned in the +F direction while discharging fluid R from the discharge unit 7.
  • the height of the fluid R discharged from the discharge portion 7 is D3 (D3 is a distance greater than D1).
  • the three-dimensional modeling device 1 of this embodiment allows the height of the rotating roller 5 to be changed relative to the discharge unit 7, making it easy to change the width and height of the fluid R discharged from the discharge unit 7, and ultimately making it easy to manufacture the desired three-dimensional object.
  • the process returns directly to the three-dimensional modeling program 18a (S39). If it is determined that the shape to be coated is a curved area (S35: Yes), the curved area coating program 18c is executed (S37).
  • Whether the application form is a straight or curved region is determined by comparing the movement angle value of the discharge unit 7 stored in the discharge unit movement angle value 16f of the RAM 16 with the movement angle value of the rotating roller 5 stored in the rotating roller movement angle value 16g of the RAM 16. If the movement angle value of the discharge unit 7 and the movement angle value of the rotating roller 5 are the same, it is determined to be a straight region, and if the movement angle value of the discharge unit 7 and the movement angle value of the rotating roller 5 are different, it is determined to be a curved region.
  • Figure 16 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and rotating roller in the first stage in the curved area coating program
  • Figure 17 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and rotating roller in the second stage
  • Figure 18 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and rotating roller in the third stage
  • Figure 19 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and rotating roller in the final stage.
  • the upper side of the drawing is the positive angle
  • the upper and lower sides of the drawing are the negative angle.
  • the trajectory of the discharge portion 7 is illustrated as trajectory A.
  • the rotating roller 5 is determined whether the rotating roller 5 can follow the movement of the discharge unit 7 (S41). If it is determined that the rotating roller 5 can follow the movement of the discharge unit 7 (S41: Yes), the rotating roller 5 is controlled to follow the trajectory of the discharge unit 7 (S43), and then the process returns to the N-layer application program 18b (S59). If it is determined that the rotating roller 5 cannot follow the movement of the discharge unit 7 (S41: No), the process of S45 to S57 described below is executed.
  • the determination of whether the rotating roller 5 can follow the movement of the discharge section 7 is made based on whether the distance between the discharge section 7 and the rotating roller 5 exceeds the discharge section-to-rotating roller distance P1 (see FIG. 16) when the movement angle value of the discharge section 7 and the movement angle value of the rotating roller 5 are different. If the distance between the discharge section 7 and the rotating roller 5 does not exceed the discharge section-to-rotating roller distance P1, it is determined that the rotating roller 5 can follow the movement of the discharge section 7, and if the distance between the discharge section 7 and the rotating roller 5 exceeds the discharge section-to-rotating roller distance P1, it is determined that the rotating roller 5 cannot follow the movement of the discharge section 7.
  • the rotating roller 5 it is determined that the rotating roller 5 can follow the movement of the discharge unit 7 (S41: Yes), and the rotating roller 5 is controlled to follow the trajectory of the discharge unit 7 (S43), and the process returns to the N-layer coating program 18b (S59).
  • the reason for determining whether or not the discharge part 7 and the rotating roller 5 need to return is so that when the fluid R discharged from the discharge part 7 is applied over a wide area by the rotating roller 5, the rotating roller 5 can return and press the end face of the widened fluid R, and also so that when the bending angle of the discharge part 7 is acute, the rotating roller 5 can return and reliably press the entire fluid R in areas that cannot be pressed by simply rotating the rotating roller 5.
  • the discharge of fluid R from the discharge unit 7 is stopped when the discharge unit 7 and the rotating roller 85 are returned a predetermined length in a predetermined direction, but the discharge of fluid R from the discharge unit 7 may be stopped when the rotating roller 85 is raised (at S45). In that case, the fluid R can be layered even more evenly, and ultimately the three-dimensional object can be layered and manufactured more satisfactorily.
  • the N-layer coating program 18b (S9) is terminated and processing returns to the three-dimensional modeling program 18a, it is determined whether coating of the entire N layer (initially the first layer) is complete (S11). If it is determined that coating of the entire N layer is not complete (S11: No), the N-layer coating program 18b (S9) is executed until coating of the entire N layer is complete. If it is determined that coating of the entire N layer is complete (S11: Yes), the number of N layers is increased by 1 (S13) and the height of the discharge portion 7 is moved up by one layer (S15).
  • the amount of fluid R discharged from the discharge section 7 per unit time is determined by the rotation speed of the head-side pump drive motor 34.
  • the rotation speed of the head-side pump drive motor 34 is determined based on the data stored in the pump rotation instruction value 16c of the RAM 16.
  • the thickness of the layer to be applied is determined by the height of the rotating roller 5 (meaning the height of the fluid to be applied within the layer, not the height from the modeling table P), so the rotational speed of the head-side pump drive motor 34 is adjusted differently depending on the height of the rotating roller 5.
  • the pump rotation interrupt process 18d first, height data of the rotating roller 5 (not the height from the modeling table P, but the height of the fluid to be applied within the layer) is obtained from the rotating roller height instruction value 16b in the RAM 16 (S71), and based on the height data of the rotating roller 5, the rotation speed of the head-side pump drive motor 34 is calculated (S73), the calculated rotation speed is stored in the pump rotation instruction value 16c (S75), and the interrupt process is terminated (S77).
  • the rotation speed of the head-side pump drive motor 34 is controlled based on the data stored in the pump rotation instruction value 16c of the RAM 16.
  • the pump rotation interrupt process 18d allows the discharge unit 7 to automatically adjust the amount of fluid R discharged, so that the fluid R can be applied without excess or deficiency, making it easy to manufacture the desired three-dimensional model.
  • the three-dimensional modeling device 1 of this embodiment is configured such that the temperature of the rotating roller 5 is adjusted by the temperature adjustment unit 19, and the temperature of the fluid R discharged from the discharge unit 7 is also adjusted, thereby improving the bonding strength between the stacked fluids.
  • the temperature of the temperature adjustment unit 19 is determined based on the data stored in the rotating roller temperature indication value 16e of the RAM 16.
  • the three-dimensional modeling device 1 of this embodiment is equipped with a rotating roller temperature sensor 21, and the temperature of the rotating roller temperature sensor 21 is constantly stored in the roller temperature sensor detection value 16d of the RAM 16.
  • the first indication value data stored in the rotating roller temperature indication value 16e of the RAM 16 is obtained (S81), and the sensor value data stored in the roller temperature sensor detection value 16d of the RAM 16 is obtained (S83).
  • the sensor value data is equal to or less than the first indication value data (e.g., 230°C) (S85). If it is determined that the sensor value data is not equal to or less than the first indication value data (e.g., 230°C) (S85: No), second indication value data smaller than the first indication value data is stored in the rotating roller temperature indication value 16b, and the temperature of the temperature adjustment unit 19 is controlled to be lowered (e.g., by 5°C) (S89).
  • the first indication value data e.g., 230°C
  • a third indication value data greater than the first indication value data is stored in the rotating roller temperature indication value 16b, and the temperature of the temperature adjustment unit 19 is controlled to be increased (e.g., by 5°C) (S87).
  • the interrupt process is terminated (S99). If it is determined that the Nth layer is the bottom layer (S91: Yes), it is determined whether or not to manufacture the three-dimensional object integrally with the modeling table (S93).
  • the reason for determining whether or not to manufacture the three-dimensional object integrally with the modeling table is that the three-dimensional printing device 1 of this embodiment is compatible with both cases in which the manufactured three-dimensional object is used integrally with the modeling table, and cases in which the manufactured three-dimensional object is used separately from the modeling table.
  • the three-dimensional printing device 1 of this embodiment is configured so that when a three-dimensional object is manufactured in a fixed location such as the printing table P of this embodiment, the three-dimensional object can be easily separated from the printing table P, while when a second printing table is placed on the printing table P of this embodiment and a three-dimensional object is manufactured integrally with the second printing table, the three-dimensional object is configured to be integral with the second printing table.
  • the temperature of the temperature control unit 19 is specially controlled for the bottom layer adjacent to the modeling table because, in the bottom layer, it is necessary to take into account the bonding strength of the fluid R, taking into account the heat capacity including the modeling table in addition to the fluid R.
  • the instruction value data is increased and stored in the rotating roller temperature instruction value 16b, an instruction is given to increase the temperature of the temperature adjustment unit 19 (S95), and the interrupt process is terminated (S99);
  • the instruction value data is decreased and stored in the rotating roller temperature instruction value 16b, an instruction is given to decrease the temperature of the temperature adjustment unit 19 (S97), and the interrupt process is terminated (S99).
  • the three-dimensional modeling device 1 of this embodiment is equipped with a discharge unit 7 that discharges a hardenable fluid R from an opening 7c, and a rotating roller 5 that can press the fluid R discharged from the discharge unit 7, and is intended to produce a three-dimensional object by moving the discharge unit 7 and stacking the fluid R discharged from the discharge unit 7.
  • the rotating roller 5 since the rotating roller 5 is rotatable by itself and can rotate around the discharge unit 7, even if the direction of movement of the discharge unit 7 is changed, the fluid R can be stacked evenly while ensuring the strength of the three-dimensional object, and thus the three-dimensional object can be stacked well to produce the object.
  • the distance P1 between the discharge unit 7 and the rotating roller 5 is longer than the radius R1 of the rotating roller 5, so that when the movement direction of the discharge unit 7 is changed, the rotating roller 5 can rotate more freely, and thus the three-dimensional model can be manufactured by stacking more effectively.
  • the rotating roller 5 can change its height relative to the discharge unit 7, can rotate along the trajectory of the discharge unit 7, and can be moved away from the fluid R discharged from the discharge unit 7 when the movement direction of the discharge unit 7 and the movement direction of the rotating roller 5 are different. Therefore, the fluid R can be layered evenly while maintaining the strength of the three-dimensional model, and ultimately the three-dimensional model can be layered and manufactured even better.
  • the discharge unit 7 stops discharging the fluid R while the rotating roller 5 is separated from the fluid R, so that the fluid R can be layered evenly, and ultimately the three-dimensional object can be layered and manufactured more satisfactorily.
  • the rotating roller 5 can move away from the fluid R, then move back a predetermined distance and begin to press the fluid R discharged from the discharge section 7, so that the fluid R can be layered evenly, and ultimately the three-dimensional object can be layered and manufactured more satisfactorily.
  • the second embodiment of the present invention will be described below.
  • the three-dimensional modeling device 80 of this embodiment is similar to the three-dimensional modeling device 1 of the first embodiment, except for the applicator 83a. Therefore, parts common to the first embodiment are given the same reference numerals and descriptions thereof will be omitted.
  • Figure 22 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and rotating roller in the first stage when using the applicator of the second embodiment in the curved area coating program
  • Figure 23 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and rotating roller in the second stage
  • Figure 24 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and rotating roller in the third stage.
  • FIG. 25 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and rotating roller in the fourth stage when the applicator of the second embodiment is used in the curved area coating program
  • FIG. 26 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and rotating roller in the fifth stage
  • FIG. 27 is an explanatory diagram (bottom view) showing an example of the operating state of the discharge unit and rotating roller in the final stage.
  • the head unit 3 is equipped with an applicator 83a that ejects and layers the fluid R on the modeling table P, and a processing machine 3b that shapes the fluid R that has been layered and hardened on the modeling table P.
  • the head unit 3 operates an X-axis slide motor 35 (see Figure 5) located in the head unit 3, causing it to move in the +X and -X directions on the moving table 59.
  • the applicator 83a is disposed in the applicator body 43 and includes a rotating roller rotational movement motor 9 for rotating the rotating roller 85 (described later) around the discharge section 7, a motor gear 11 connected to the motor shaft of the rotating roller rotational movement motor 9, a driven gear 13 screwed into the motor gear 11, a rotating shaft 15 formed integrally with the driven gear 13, a rotating lever 87 connected at one end to the rotating shaft 15, a rotating roller rotational movement motor 22 connected to the other end of the rotating lever 87 for rotating the rotating roller 5 itself (described later), a motor gear 84 connected to the motor shaft of the rotating roller rotational movement motor 22, a driven gear 26 screwed into the motor gear 84, a rotating guide 88 that rotates coaxially with the driven gear 26, and a rotating roller 85 rotatably connected to the rotating guide 88.
  • a rotating roller rotational movement motor 9 for rotating the rotating roller 85 (described later) around the discharge section 7
  • a motor gear 11 connected to the motor shaft of the rotating roller rotational movement motor 9,
  • the applicator 83a also includes a rotating roller up-down movement motor 23 arranged in the applicator body 43, a motor gear (not shown) connected to the motor shaft of the rotating roller up-down movement motor 23, a driven gear (not shown) that screws into the motor gear (not shown), a ball screw (not shown) that is connected coaxially with the driven gear (not shown), and a rotating shaft 15 that screws into the ball screw (not shown).
  • the distance P2 between the center of the discharge portion 7 and the center of the rotation axis of the rotating roller 5 is configured to be longer than the length L1, which is half the longitudinal length of the rotating roller 85 (see FIG. 22). Therefore, the rotating roller 85 can rotate 360° without any restrictions.
  • the rotating roller 85 can rotate within a range that does not come into contact with the discharge section 7.
  • the applicator 83a is also provided with a rotating roller temperature sensor 81 that is disposed on the rotating roller 85 and detects the temperature of the rotating roller 85, and a rotating roller temperature adjustment unit 89 that adjusts the temperature of the rotating roller 85 based on the detection value of the rotating roller temperature sensor 81.
  • the rotating roller temperature adjustment unit 89 is disposed inside the rotating shaft 82 of the rotating roller 85.
  • the temperature of the rotating roller temperature sensor 81 is always stored in the roller temperature sensor detection value 16d in RAM 16.
  • the right side of the drawing is a movement angle of 0°
  • the left side of the drawing is a movement angle of 180° (or -180°)
  • the upper side of the drawing is a positive angle
  • the upper and lower sides of the drawing are negative angles.
  • the trajectory of the discharge portion 7 is illustrated as trajectory B.
  • the rotating roller 85 determines whether the rotating roller 85 can follow the movement of the discharge unit 7 (S41). If it is determined that the rotating roller 85 can follow the movement of the discharge unit 7 (S41: Yes), the rotating roller 85 is controlled to follow the trajectory of the discharge unit 7 (S43), and then the process returns to the N-layer application program 18b (S59). If it is determined that the rotating roller 85 cannot follow the movement of the discharge unit 7 (S41: No), the process of S45 to S57 described below is executed.
  • whether the rotating roller 85 can follow the movement of the discharge unit 7 is determined, as in the first embodiment, by whether the distance between the discharge unit 7 and the rotating roller 85 exceeds the discharge unit-to-rotating roller distance D2 (see FIG. 22) when the movement angle value of the discharge unit 7 and the movement angle value of the rotating roller 85 are different. If the distance between the discharge unit 7 and the rotating roller 85 does not exceed the discharge unit-to-rotating roller distance D2, it is determined that the rotating roller 85 can follow the movement of the discharge unit 7, and if the distance between the discharge unit 7 and the rotating roller 85 exceeds the discharge unit-to-rotating roller distance D2, it is determined that the rotating roller 85 cannot follow the movement of the discharge unit 7.
  • the rotating roller 85 can follow the movement of the discharge unit 7 (S41: Yes), and the rotating roller 85 is controlled to follow the trajectory of the discharge unit 7, and the process returns to the N-layer coating program 18b (S59).
  • the reason for determining whether or not the discharge part 7 and the rotating roller 85 need to return is, as mentioned above, to ensure that when the fluid R discharged from the discharge part 7 is applied over a wide area by the rotating roller 85, the rotating roller 85 returns to press the end face of the widened fluid R, and also to ensure that when the bending angle of the discharge part 7 is acute, the rotating roller 85 returns to press the entire fluid R in an area that cannot be pressed by simply rotating it.
  • the discharge of fluid R from the discharge unit 7 is stopped when the discharge unit 7 and the rotating roller 85 are returned a predetermined length in a predetermined direction, but the discharge of fluid R from the discharge unit 7 may be stopped when the rotating roller 5 is raised (at S45). In that case, the fluid R can be layered even more evenly, and ultimately the three-dimensional object can be layered and manufactured more satisfactorily.
  • the N-layer coating program 18b (S9) is terminated and processing returns to the three-dimensional modeling program 18a, it is determined whether coating of the entire N layer (initially the first layer) is complete (S11). If it is determined that coating of the entire N layer is not complete (S11: No), the N-layer coating program 18b (S9) is executed until coating of the entire N layer is complete. If it is determined that coating of the entire N layer is complete (S11: Yes), the number of N layers is increased by 1 (S13) and the height of the discharge portion 7 is moved up by one layer (S15).
  • the three-dimensional modeling device 80 of this embodiment includes a discharge unit 7 that discharges a hardenable fluid R from an opening 7c, and a rotating roller 85 that can press the fluid R discharged from the discharge unit 7.
  • the discharge unit 7 and the rotating roller 85 are moved to stack the fluid R discharged from the discharge unit 7 to produce a three-dimensional object.
  • the rotating roller 85 since the rotating roller 85 is rotatable by itself and can rotate around the discharge unit 7, even if the direction of movement of the discharge unit 7 is changed, the fluid R can be stacked evenly while ensuring the strength of the three-dimensional object, and thus the three-dimensional object can be stacked well to produce the object.
  • the distance P2 between the discharge unit 7 and the rotating roller 85 is longer than the length L1, which is half the longitudinal length of the rotating roller 85. Therefore, when the movement direction of the discharge unit 7 is changed, the rotating roller 85 can rotate more freely, and thus the three-dimensional model can be manufactured by stacking more effectively.
  • the rotating roller 85 can change its height relative to the discharge unit 7, can rotate along the trajectory of the discharge unit 7, and can be moved away from the fluid R discharged from the discharge unit 7 when the movement direction of the discharge unit 7 and the movement direction of the rotating roller 85 are different. Therefore, the fluid R can be layered evenly while maintaining the strength of the three-dimensional model, and ultimately the three-dimensional model can be layered and manufactured even better.
  • the discharge unit 7 stops discharging the fluid R while the rotating roller 85 is separated from the fluid R, so that the fluid R can be layered more evenly, and ultimately, the three-dimensional object can be layered and manufactured more satisfactorily.
  • the rotating roller 85 can move away from the fluid R, then move back a predetermined distance and begin to press the fluid R discharged from the discharge section 7, so that the fluid R can be layered evenly, and ultimately a three-dimensional object can be manufactured by layering it even better.
  • the cross-sectional shape of the rotating roller is rectangular like rotating roller 5 and rotating roller 85, but it is not limited to this shape, and the cross-sectional shape of the rotating roller may be an inverted crown shape whose central portion is smaller than both ends, or may be a trapezoid whose central portion is flat similar to the inverted crown shape.

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  • Engineering & Computer Science (AREA)
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  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)

Abstract

Le problème décrit par la présente invention est de fournir un appareil de modélisation tridimensionnelle qui est apte à stratifier uniformément un fluide, tout en garantissant la résistance d'un modèle tridimensionnel même dans les cas où la direction de déplacement d'une unité d'éjection est modifiée, et qui est ainsi apte à produire un modèle tridimensionnel par le biais d'une bonne stratification. À cet effet, l'invention concerne un appareil de modélisation tridimensionnelle 1 qui comprend une unité d'éjection 7 qui éjecte un fluide durcissable R à partir d'une ouverture 7c et un rouleau rotatif 5 qui est apte à appliquer une pression au fluide R éjecté à partir de l'unité d'éjection 7, l'unité d'éjection 7 et le rouleau rotatif 5 étant déplacés et, plus particulièrement, le rouleau rotatif 5 lui-même étant conçu de façon à pouvoir tourner et à pouvoir tourner autour de l'unité d'éjection 7, afin de produire un modèle tridimensionnel par stratification du fluide R éjecté à partir de l'unité d'éjection 7.
PCT/JP2023/000379 2023-01-11 2023-01-11 Appareil de modélisation tridimensionnelle WO2024150294A1 (fr)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016026915A (ja) * 2014-07-07 2016-02-18 株式会社ミマキエンジニアリング 立体物造形装置及び立体物造形方法
JP2018188718A (ja) * 2017-05-11 2018-11-29 株式会社リコー 三次元造形装置、三次元造形物製造方法及びプログラム
WO2019055108A1 (fr) * 2017-09-13 2019-03-21 Thermwood Corporation Appareil et procédés de compression de matière lors d'une fabrication additive
WO2019094068A1 (fr) * 2017-11-07 2019-05-16 Thermwood Corporation Conception améliorée de rouleau de compression et procédé de fabrication additive
WO2019160616A1 (fr) * 2018-02-14 2019-08-22 Thermwood Corporation Procédés et appareil de compensation thermique pendant la fabrication additive
WO2020142127A1 (fr) * 2019-01-04 2020-07-09 Thermwood Corporation Tête d'impression pour fabrication additive
JP2022140392A (ja) * 2021-03-12 2022-09-26 サームウッド コーポレイション 積層造形における層間結合をより一体化させるためのシステム及び方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016026915A (ja) * 2014-07-07 2016-02-18 株式会社ミマキエンジニアリング 立体物造形装置及び立体物造形方法
JP2018188718A (ja) * 2017-05-11 2018-11-29 株式会社リコー 三次元造形装置、三次元造形物製造方法及びプログラム
WO2019055108A1 (fr) * 2017-09-13 2019-03-21 Thermwood Corporation Appareil et procédés de compression de matière lors d'une fabrication additive
WO2019094068A1 (fr) * 2017-11-07 2019-05-16 Thermwood Corporation Conception améliorée de rouleau de compression et procédé de fabrication additive
WO2019160616A1 (fr) * 2018-02-14 2019-08-22 Thermwood Corporation Procédés et appareil de compensation thermique pendant la fabrication additive
WO2020142127A1 (fr) * 2019-01-04 2020-07-09 Thermwood Corporation Tête d'impression pour fabrication additive
JP2022140392A (ja) * 2021-03-12 2022-09-26 サームウッド コーポレイション 積層造形における層間結合をより一体化させるためのシステム及び方法

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