奥地利专利AT510881A2 THREE-DIMENSIONAL MODELING DEVICE, THREE-DIMENSIONAL MODELING METHOD AND MODEL FORMED BY THE METHOD

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专利摘要:
A three-dimensional modeling apparatus comprising: a stage to which a powdery material for lamination is applied; a feeding mechanism that supplies the powdery material to the stage for one layer at a time; a plurality of heads each having a plurality of nozzles each of which ejects a liquid for forming a model, whereby they can inject the liquid onto the powdery material supplied to the stage by the feeding mechanism; and a moving mechanism that moves the plurality of heads relative to the stage in different directions, respectively.
公开号:AT510881A2
申请号:T1760/2011
申请日:2011-11-29
公开日:2012-07-15
发明作者:
申请人:Sony Corp；
IPC主号:

专利说明:

1
THREE-DIMENSIONAL MODELING PREPARATION, THREE-DIMENSIONAL MODELING PROCESS AND MODEL THAT IS DEVELOPED BY THE METHOD
BACKGROUND
This invention relates to a three-dimensional modeling apparatus, a three-dimensional modeling method in which a three-dimensional model is formed by lamination based on image data of a cross section, and a model formed by this method.
In the past, such a three-dimensional modeling apparatus has been understood as an apparatus for rapid prototyping, being widely used for industrial applications. Main systems for three-dimensional modeling devices are an optical modeling system, a web lamination modeling system, and a powder modeling system.
The optical modeling system serves to form a cross-sectional shape by irradiating and laminating a photo-curing resin with a high-power laser, thereby producing a three-dimensional shape. The web lamination modeling system consists of cutting out thin webs into layers that are adhered and laminated to produce a three-dimensional shape. The powder modeling system consists of applying a powdered material in layers and making a cross-sectional shape, followed by lamination to produce a three-dimensional shape.
The powder modeling system is further roughly classified into systems that melt or sinter powders, as well as systems in which a powder solidifies using an adhesive. In the latter system, a liquid such as an adhesive and a binder is sprayed onto a powder containing gypsum as a main component, using an ink jet head as used in a printer 2 or the like to cause solidification, forming a cross-sectional layer and laminated, thereby producing a three-dimensional shape.
In powder modeling employing an ink jet head, which is, for example, a head for an ink jet printer available in the Kandel, a liquid, such as an adhesive, is selectively applied to a powder sprayed web, as in US Pat Printing in accordance with a sprayed area to solidify the powder. The three-dimensional modeling apparatus described in Unexamined Japanese Patent Application 2009-101651 is an apparatus using an ink jet head of a powder modeling system (see, for example, Japanese Unexamined Patent Application 2009-101651).
SUMMARY
In a modeling apparatus using an ink jet head of a powder modeling system, when a spraying defect such as clogging occurs in a part of a plurality of nozzles provided in the ink jet head, a powder layer having the defective area is laminated. Since an ink jet head is scanned in a given direction, it means that serious problems arise in that a linear unbonded area is encountered in a model which is formed when an injection error occurs in an injection unit, the model being easy in one direction can break.
It is therefore desirable to provide a three-dimensional modeling apparatus and a three-dimensional modeling method that can prevent the instructor of an area to make a model that can be easily broken out of areas of which the model is composed, whereby it can be prevented that the model is damaged in the directions in which it can easily break, as well as a model is provided, which is formed by this method.
A three-dimensional modeling apparatus according to an embodiment of the present disclosure includes a stage, a feeding mechanism, a plurality of heads, and a moving mechanism.
On the stage, a powdery material for Lamir.ierung is applied.
The feed mechanism feeds the powdery material one stage at a time to the stage.
The plurality of heads are provided with a plurality of nozzles each of which ejects a liquid for forming a model, thereby squirting the liquid onto the powdery material supplied to the stage by the feeding mechanism.
The moving mechanism moves the plurality of heads relative to the stage in different directions, respectively.
Even if a spraying defect occurs in one of the many nozzles in at least one head, the plurality of heads are moved in different directions by the moving mechanism relative to the stage. Thus, in accordance with an embodiment of the present disclosure, it is possible to prevent the formation of a defective region which is a boundary region in which the model can be easily broken, being formed reinforced in one direction possibly occurs when only a single head is provided. This makes it possible for a model to be prevented from being damaged in the directions in which it can easily break.
The moving mechanism may also move two heads, which are the plurality of heads, so that the directions of movement of the two heads are perpendicular to each other. The directions of movement of the two heads are perpendicular to each other, whereby it is possible to simplify the construction of the head and the movement mechanism in comparison with a case in which they are not perpendicular to each other.
Alternatively, the moving mechanism may alternatively move the plurality of heads each time the powdery material for one layer is supplied from the feeding mechanism. Therefore, when a spraying failure has occurred, it is possible to prevent the continuous formation of a defective area at the same place in the direction in which the lamination of the powdery material takes place. Alternatively, however, it is also possible to proceed as in the following embodiment.
The moving mechanism may further move a first head out of the plurality of heads when the powdery material has been supplied from the feeding mechanism for a first number of continuous layers, and also disengages a second head, which is not the first head, from the feeding head Can move a plurality of heads when the powdery Mauerial for a second number of continuous layers was supplied by the feed mechanism.
In this case, the first number of layers may also differ from the second number of layers. The embodiment of the present disclosure is useful, for example, when each head sprays another fluid, and when another material is supplied by the feeding mechanism for each head.
The feeding mechanism may further supply the stage to the stage with a plurality of different powdery materials corresponding to the plurality of heads, respectively. Alternatively, the plurality of heads, as described above, can each spray different liquids. These embodiments of the present disclosure make it possible to form a model in which each one or a plurality of layers making up the model have different properties.
A three-dimensional modeling apparatus according to another embodiment of the present disclosure includes a stage, a feeding mechanism, a head, and a fifth embodiment
Moving mechanism.
On the stage, a powdery material is applied to laminate it.
The feed mechanism feeds the powdery material one stage at a time to the stage.
The head is provided with a plurality of nozzles spraying a liquid for ejecting a model, spraying the liquid onto the powdery material supplied to the stage by the feeding mechanism.
The moving mechanism moves the head in different directions relative to the stage, respectively, when the liquid is sprayed onto the powdery material for respective different layers fed from the feeding mechanism.
Even if a spraying defect occurs in one of the many nozzles contained in the head, the head is moved in different directions relative to the stage by the moving mechanism. That is, it is possible to prevent the formation of a defective area which is a boundary area that allows a model to be easily broken while being reinforced in one direction, and then possibly occurs if only one head is provided, and it is possible to prevent damage to a model.
In this case, the three-dimensional modeling apparatus may further include a rotation mechanism for rotating the head about an axis that extends in a direction of lamination of the powdery material. Thus, a direction of movement of the head can be changed.
A three-dimensional modeling method according to an embodiment of the present disclosure comprises supplying a powdery material for a layer onto a stage.
A liquid for forming a model is injected from a first head onto the powdery material, which is referred to as 6
the stage has been fed while the first head is moved relative to the stage in a first direction.
The powdery material for another layer is supplied to the stage after the liquid has been jetted from the first head.
A liquid for forming a model is injected from a second head onto the powdery material supplied to the stage while the second head is moved relative to the stage in a second direction different from the first direction.
A model according to an embodiment of the present disclosure is a model formed by the three-dimensional modeling method described above.
As described above, in accordance with the embodiments of the present disclosure, it is possible to prevent the formation of a region where the model can easily break out of areas composing the model, while also preventing the model can easily be damaged in those directions where it breaks easily.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings shows:
1 shows a three-dimensional modeling device in accordance with an embodiment of the present disclosure.
Fig. 2 is a Schrägriss, in which an internal structure of a main box of a three-dimensional
Modeling device is shown;
Fig. 3 is a plan view of the three-dimensional
Modeling apparatus shown in Fig. 2;
Fig. 4 is a section through the three-dimensional
Modeling device along a side surface, wherein a state of the three-dimensional modeling device is shown, in which a top cover has been removed from the main boxes;
Fig. 5A is a simplified plan view showing an X-head and a Y-head, and Fig. 5B is a
Modification thereof;
6A to 6E, the operation of a three-dimensional modeling and simplified plan views of a main part of the three-dimensional
Modeling device, wherein the operation is shown in their sequence;
Figs. 7A and 7B are on top, in which a
Modeling is dargestellel in which a model is housed, which has been formed with a method that is compared with the embodiment;
Fig. 8 is a perspective view showing a main part of a three-dimensional modeling apparatus in accordance with another embodiment of the present disclosure;
Fig. 9 is an oblique view in which the three-dimensional modeling apparatus shown in Fig. 8 is shown in a state in which a top plate and a printing base plate have been removed;
FIG. 1C is a main part of a three-dimensional modeling apparatus in accordance with still another embodiment of the present disclosure, and a plan view showing a modeling box and heads; FIG. and
11 is a main part of a three-dimensional modeling apparatus in accordance with still another embodiment of the present disclosure, and a plan view showing a modeling box and a head. detailed description of forms of execution
Embodiments of the present disclosure will now be described in conjunction with the drawings.
Embodiment (Construction of Three-dimensional Modeling Apparatus)
Fig. 1 'shows a three-dimensional modeling apparatus in accordance with an embodiment of the present disclosure.
A three-dimensional modeling apparatus 100 includes a main box 1 having approximately the shape of a rectangular parallelepiped, and a control circuit box 3 connected to the main box 1. The main body 1 has a side cover 5, a main cover 7 attached thereto, and an upper cover 6 that can be removed from the main cover 7.
Fig. 2 is a perspective view showing an internal structure of a main body 1 of a three-dimensional modeling apparatus 100. FIG. 3 is a plan view of the three-dimensional modeling apparatus 100 shown in FIG. 2. 4 shows a section through the three-dimensional modeling apparatus 100 along a side surface, showing a state of the three-dimensional modeling apparatus 100 in which an upper cover 6 has been removed from the main body 1.
The three-dimensional modeling apparatus 100 has, from bottom to top, a base plate 2, a pressure base plate 4, and a top plate 8 connected by a series of column members 9. As shown in FIGS. 3 and 4, between the base plate 2 and the printing base plate 4, there are provided a feeding unit 10 and a modeling unit 20 which are aligned in the Y-axis direction. The modeling unit 20 is arranged substantially in a central position in the direction of the X and the Y axis.
The feeding unit 10, which functions as a feeding mechanism, supplies to the modeling unit 20 a powdery material (hereinafter simply referred to as powder P) (see Fig. 4). The supply unit 10 has a supply container 11 in which the powder P is stored, a reciprocating plate 12 disposed in the supply container 11, and a supply roller 13, in the Y-axis direction near the upper surfaces from an exit end of the supply container 11 is movable over one end of a modeling housing 21, which will be described later. The feed roller 13 can be moved in the Y-axis direction, for example, with a moving mechanism, not shown, such as a ball screw.
As shown in Figs. 2 and 4, the printing base plate 4, the upper plate 8 and the main cover 7 are provided with openings 4a, 8a and 7a, respectively, at approximately the same positions when viewed from the Z-axis direction. On the opening 7a of the main cover 7, the upper cover 6 (see Fig. 1) is mounted. When the upper cover 6 has been removed from the main cover 7, a user supplies the powder P to the elevating plate 12 in the supply container 11 through the opening 4a, 8a and 7a above the upper plate 8.
The lifting plate 12 can be lifted by a lifting motor 14. The feed roller 13 can be moved to the right, for example, from a standby position, Fig. 4, while it rotates (about its axis) counterclockwise. Thus, the feed roller 13 moves to the right while rubbing on a surface of the powder P applied to the lift plate 12, thereby pushing the powder P forward to the modeling unit 20 and the powder P of the unitizing unit 20 with the amount for one Layer feeds.
The modeling unit 20 includes the modeling housing 21, a modeling stage 22 disposed in the modeling housing 21 to which the powder P can be applied to laminate it, and a lift motor 23 that moves the modeling stage 22 up and down in the modeling housing 21 can. The powder P supplied from the feed roller 13 as described above is applied in the modeling case 21 (on the modeling stage 22). When a model is processed, the modeling stage 22 is driven by the Hubmotcr 13 when the powder P was supplied from the feed roller 13 in the amount of one layer, the modeling stage 22 from the lifting motor 23 by the thickness of the powder P for a Layer is lowered.
In the modeling unit 20, in the direction of the Y-axis, opposite to the side on which the feeder unit 10 is provided, a housing 30 is arranged to receive excess powder P. The excess powder P is disposed of or sent for reuse.
On the printing base plate 4, as a plurality of respective heads, which inject a liquid onto the powder P on the modeling stage 22 in the modeling case 21, two heads, i. an X-head 4IX and a Y-head 41Y. The X-head 4IX and the Y-head 41Y can be moved on the modeling housing 21 in directions perpendicular to each other.
For example, as shown in FIGS. 2 and 3, the X-head 4IX may be moved in the direction of the X-axis with an X-axis moving mechanism 40X. The Y head 41Y can be moved in the Y-axis direction with a Y-axis movement mechanism 4 OY. The X-axis movement mechanism 4 0X has a guide rail 43X provided in the X-axis direction and a head support 42X supporting the X-head 41X provided on the guide difference 43X, moving with a motor, not shown can be. The Y-axis movement mechanism 40Y, similarly to the X-axis movement mechanism 40X, also has a guide rail 43Y provided in the Y-axis direction and a head support 42Y supporting the Y-head 41Y and provided on the guide rail 43Y is, where it can be moved by a not dargesteilten engine. The X-axis movement mechanism 40X and the Y-axis movement mechanism 4 OY constitute a three-way mechanism, which may be, for example, a ball screw or a rack with a pinion.
The rest positions of the two heads 41X and 41Y are above side portions of the modeling housing 21 when the three-dimensional modeling apparatus 100 is in the standby state illustrated in FIG. 3 and the like.
Fig. 5A is a simplified plan view showing an X-head 41X and a Y-head 41Y. The principle by which a liquid is ejected from the X-head 41X and the Y-head 41Y is typically similar to the principle of a head of an ink-jet printer as known from the past. The X-head 41X and the Y-head 41Y are each line headers. That is, as shown in FIG. 3, the length of the X-head 41X in the Y-axis direction is not smaller than a length of at least a predetermined modeling area in the modeling housing 21 in the Y-axis direction.
As shown in Fig. 5A, the X-head 41X is provided with a plurality of nozzles nX which are aligned in the Y-axis direction to eject a liquid. The length of the Y-head 4iY in the X-axis direction is not smaller than a length of the predetermined modeling region 22a in the modeling housing 21 in the X-axis direction. The head 41Y is provided with a plurality of nozzles nY aligned in the direction of the X-axis to spout a liquid. For example, 3000 to 5000 nozzles nX and nY are provided in one head.
As shown in Fig. 5B, the modeling stage 22 and the modeling area 22a may also be rectangular when viewed in the Z-axis direction. In this case, the respective lengths of the X-head 4IX and the Y-head 41Y are also formed in the lengths in correspondence with each side of the modeling area 22a.
As powder P, for example, gypsum is used. In addition, water-soluble inorganic substances such as saline, magnesium sulfate, magnesium chloride, potassium chloride and sodium chloride are used. A mixture of sodium chloride and a salt solution (such as magnesium sulfate, magnesium chloride and potassium chloride) may also be used. That is, the powder P contains sodium chloride as a main component. Alternatively, organic substances such as polyvinylpyrrolidone (PVP), polyvinyl alcohol, carboxymethylcellulose, ammonium polyacrylate, sodium polyacrylate, ammonium methacrylate, sodium methacrylate and their polymers may also be used. The powder P typically has an average particle diameter of not less than 10 μm and not more than 100 μm. 12
The liquid ejected from the X-head 41X and the Y-head 41Y comprises a component adhering to or bonding to the powder P to form a model. Alternatively, to dissolve the binder, a liquid, for example, water, is used if the powder P previously has a binder (for example, an adhesive, such as the above-described PVP) *
In a case where the outside of a model or the inside of a model is to be inked, dye liquid or dye inks in cyan, magenta, yellow and black are used as the liquid. If no inking is required, an invisible ink can also be used.
The respective pitches in which the X-axis movement mechanism 40X and the Y-axis movement mechanism 4GY are set in the Z-axis direction are based on the position of the upper plate 8 in the Z-axis direction to avoid mechanical interference with each other. For example, the guide rail 43X of the X-axis moving mechanism 40X is disposed at a position at a predetermined distance from the upper surface of the upper plate 8 in the Z-axis direction. The guide rail 43Y of the Y-axis movement mechanism 4OY is disposed in the Z-axis direction at a position a predetermined distance from the lower surface of the upper plate 8.
In the control circuit housing 3, which Fig. 1 shows, a control circuit is installed, which is not shown. Although not shown, this control circuit has controls that have drives for the motors of each unit and the moving mechanisms as described above, a main controller that controls these controls together, and the like. The main controller can also be arranged outside the control circuit housing 3. These controllers consist of hardware or hardware and software (i.e., a computer). The main controller controls each unit and each moving mechanism based on laminated-section image data stored in a memory or the like, and composes a modeling object to make a model by supplying the powder P for one layer per one word data of the field data , (Operation of the three-dimensional modeling device)
An operation of the three-dimensional modeling apparatus 100 constructed as described above will now be described. Figs. 6A to 6E are simplified plan views of a main part of the three-dimensional modeling apparatus 100, the operation being illustrated in their sequence.
First, the modeling stage 22 is placed in the mode housing 21 in the highest position when modeling in the Z-axis direction. For example, when a modeling operation is started, the distance in the Z-axis direction is lowered by the distance for one layer of the powder P. For example, although the distance from a layer of the powder P is 0.1 mm, the distance is not limited to this value.
The powder P is supplied to the supply container 11. The lift plate 12 is raised by a distance that allows the powder P to be supplied to the modeling stage 22 for at least one layer on the modeling stage 22. Then, as shown in FIG. 6A, the feed roller 13 moves she turns, in the direction of the Y-axis. Damir will the powder on the elevating plate 12 in the modeling housing 21, the feeding roller 13 then moves on the modeling stage 22 in the direction of the Y-axis while it rotates, whereby the powder P is applied to the Modellierbühne 22 for a flat layer. For this flattening of the powder P on the modeling stage 22, instead of the feed roller 13, a roller which is not shown and moves in the Y-axis direction while rotating on the modeling stage 22 may be used.
As shown in Figure 6B, as the Y-head 41Y moves in the direction of the Y-axis, it selectively injects the liquid into "I *" t * * * * ·· »* * · # ·· Ί Λ · * * ····· XQ * · · · · · · · · · · · · · · · · · * Matching the image data of the cross section to a region of the entire modeling region 22a (see also Figs. 5A and 5B), such as this is also the case with normal printing with a printer. Dair.it the powder P is connected to each other in the area on which the liquid is injected, so that it solidifies.
As shown in Fig. 6C, as well as the last time, the elevating plate 12 is raised and the modeling stage 22 is lowered for a layer of the powder P. Thereafter, the powder P is supplied to the modeling stage 22 (the powder P of the first modeling layer previously processed) with the one-layer feed roller 13.
As shown in Fig. 6D, the X-head 41X, while moving in the X-axis direction, selectively injects the liquid in the X-axis direction in accordance with the image data of the cross-section to a portion of the entire modeling area 22a even when printing with a regular printer. Thereby, the liquid is supplied to the powder P for a second layer by using the X-head 41X.
Next, the liquid for a third layer of the powder P supplied from the supply roller 13 is injected, again using the Y-head 41Y. Thereafter, in the same manner, the liquid is alternately sprayed to be sprayed from the X-head 41X, sprayed from the Y-head 41Y, sprayed from the X-head 4IX, and the like.
After the liquid on the powder p the last. As shown in FIG. 6C, a model T made in this manner is then taken out of the modeling housing 21.
Fig. 7A is a plan view showing a modeling case 21 accommodating a model formed by a method to be compared with the embodiment. In this example, a model T 'of a jaw (including the teeth) of a human being is designed as a modeling object, with a head being linearly in
Direction of the Y-axis can be moved. As shown in Fig. 7A, when a spraying defect such as clogging occurs in at least one nozzle nX 'of the plurality of nozzles nX aligned in the direction of the x-axis in a head 141, the liquid will not appropriately hosed down on the line over which the nozzle nX 'runs. Thus, a defective region D is formed, which is a boundary region where the model T 'can easily be broken, being isotropic in the Y-axis direction. Such a defective region D is formed in the model Τ 'as shown in Fig. 7B as an error Ta' in the form of a thin slit occurring in the model Τ 'thus formed.
Even if no spraying error occurs, if, for example, the spray amount of each nozzle deviates from nX, there will be a problem that the model Τ 'may be easily broken in the X-axis direction, but it may break in the Y-axis direction of FIG. 7A does not break easily.
In contrast, in accordance with the three-dimensional modeling apparatus 100 of the embodiment, the X-head 4IX and the Y-head 41Y alternately spray the liquid onto the powder P for each layer while moving in directions perpendicular to each other. Even if a spraying defect occurs in at least one of the many nozzles nX and nY in the X-head 41X and / or in the Y-head 41Y, or even if the spraying amounts deviate from the nozzles nX and nY, the defective region D becomes or the change is anisotropic. That is, it is possible that the continuous formation of the defective region D at the same position in the direction of lamination of the powder P (in the Z-axis direction) is prevented, as shown in FIGS. 7A and 7B. This can prevent the model T from being damaged in those directions where it can break easily.
In the embodiment, the X-head 4IX and the Y-head 41Y move perpendicular to each other, so that the structure of the heads 4IX and 41Y as well as the ones of FIGS
··· »tt ·· * I« * «« «« «# * · · ·« «* * -I / - * · · · · * I 4 *« · «···« * · · "" "·
Movement mechanisms 4 0X and 4 OY can be built more easily.
In the embodiment, the X-head 4IX and the Y-head 41Y may also be used alternately for each plurality of layers and not only alternately for one layer at a time.
Other Embodiment
Fig. 8 is a perspective view showing a main part of a three-dimensional modeling apparatus in accordance with another embodiment of the present disclosure. Fig. 9 is a perspective view in which a three-dimensional modeling apparatus 200 shown in Fig. 8 is shown in a state where an upper plate 28 and a pressure base plate 24 have been removed. In the description that follows, the description of elements and functions similar to those elements or functions included in the three-dimensional modeling apparatus 100 according to the previous embodiment will be simplified or omitted, mainly describing only different points.
The three-dimensional modeling apparatus 2C0 in accordance with the other embodiment is provided with two feeding units 10X and 10Y. The basic structure and the basic function of these feeding units 10X and 10Y are the same as those of the feeding unit 10 according to the previous embodiment. In the other embodiment, in addition to the Y-feeding unit 10Y, the X-feeding unit 10X is newly added. As shown in Fig. 9, the X-feeding unit 10X is provided so as to be aligned with the modeling unit 20 in the X-axis direction.
The X-feed unit 10X has an X-feed roller 13X which can move in the X-axis direction as it rotates. Each of the feed units 10 is supplied with a different powder. For example, the different powders are classified according to a difference in shape, size, material or the like, or a difference in properties such as a magnetic property and hardness. 17
• Μ ·· * · • «
In a case of the embodiment, it is typical to supply the liquid from the X-head 4IX to the powder supplied from the X-feeding port 10X, and to supply the liquid from the Y-head 41Y to the powder supplied from the Y-feeding unit 10Y has been. Alternatively, the liquid may also be supplied from the Y-head 41Y to the powder before. the X-supply unit 10X has been supplied, and the liquid can also be supplied from the X-head 41X to the powder supplied from the Y-supply unit 10Y.
In the embodiment similar to the previous embodiment, the liquid is also sprayed alternately using the X-head s 4IX and the Y-head s 41Y for one layer or for a plurality of layers, respectively.
As described above, in the embodiment similar to the foregoing embodiment, it is possible to prevent the defective region D from being formed isotropically and continuously in the layer direction. By designing a model with two different types of powders, it is possible for a model to contain regions that have different materials and properties.
In the embodiment, various liquids can also be injected from the X-head 41X and the Y-head 41Y. In this case, a first powder comprising a binder, such as PVP, may also be supplied to the modeling housing 21 from, for example, a feeder unit of the two feeder units 10X and 1UY, with a second powder, such as gypsum (a powder having no binder ), the modeling housing 21 can also be supplied from the other feed unit. In this case, of the two heads 41X and 41Y, one head may also inject a liquid containing no binder, such as a water-soluble ink, onto the first powder, while the other head may also inject a second liquid containing a binder onto the first powder can spray second powder.
In the embodiment, the same powder may also be supplied 18 from the X-feed unit 10X and the Y-feed unit 10Y. In this case, since the amount of the powder accommodated in each of the two feed tanks 11X and 11Y can be halved as compared with the amount of only one feed tank 11, each of the two feed tanks 11X and 11Y can be made half as thick. Thus, the three-dimensional modeling apparatus 200 can be made thinner.
[Still another embodiment]
10 shows a main part of a three-dimensional modeling apparatus in accordance with yet another embodiment of the present disclosure, wherein a plan view of a modeling housing and the heads is shown.
For example, a modeling housing 121 in accordance with this embodiment has a hexagonal outline. To Steller. along three sides which surround the modeling housing 121 and which lie, for example, at locations which are at a rotation angle of .120 ° apart, taking the Z-axis as the center, the heads 44, 45 and 46, respectively, are arranged to spit off a liquid. These heads 44, 45 and 46 can each be moved in the X-Y plane at a corresponding angle of 120 ° different from each other by a moving mechanism which is not shown.
As the number of heads increases, the mechanism of movement becomes more complicated, but can be used to form a model that is much more anisotropic.
The modeling housing 121 is not limited to being hexagonal, it may also be quadrangular as described above, or it may be triangular or circular.
[Yet another embodiment] a
FIG. 11 shows a main part of a three-dimensional modeling apparatus in accordance with still another embodiment of the present disclosure, wherein FIG
Top view of a modeling housing and is shown on a head.
A three-dimensional modeling apparatus in accordance with this embodiment has a liquid spraying head 47 provided with a rotating mechanism for rotating the head 47 about the Z-axis.
For example, a rotation axis al of the rotation mechanism is provided near one end of the head 47. The head 47 can be moved in the direction of the X-axis and the Y-axis with an X-Y movement mechanism which is not shown. As an X-Y movement mechanism, for example, a mechanism of an XY stage known from the past can be used.
In the thus constructed three-dimensional modeling apparatus, the rotation angle of the head 47 is changed by 90 ° for each one layer or for each plurality of layers. While moving alternately in the direction of the X-axis and the Y-axis, it injects the liquid onto the powder in the modeling housing 21.
[Other executives]
Embodiments in accordance with the present disclosure are not limited to those embodiments described above, but may be other various embodiments.
In each of the above-described embodiments, a liquid is sprayed with the heads alternately for each of the same number of layers of the powder. However, it is also possible to spray a liquid for different numbers of layers or for a random number of layers alternately with the heads. Below " for each different number of layers " is to be understood as a pattern such that, for example, a liquid is sprayed with one head for a first number of layers (for example for one layer in each case), while for a second number of layers (for example for two or three layers in each case), which is different from the first number of layers injected with the other head 20.
Alternatively, another head may inject a liquid onto the same layer of the powder after a head has sprayed a liquid onto the powder for one layer.
The first and third described embodiments show the mode in which the same liquid is ejected from a plurality of heads. However, at least two of these heads can also spray off different liquids. For example, if the liquids are colored inks, inks having different compositions, i. be sprayed with different colors.
In the three-dimensional modeling apparatuses according to each of the above-described embodiments, there is provided a head having a row head which moves in one direction. However, at least one head of the plurality of heads may, however, also be a short head which is not a row head and has a plurality of nozzles, its length being narrower than a modeling width in the modeling housing 21. In this case, after a liquid in one row has been locally sprayed on the powder while the short head has moved perpendicular to the direction of the nozzle assembly, the head is moved in the direction of the nozzle assembly, with the liquid being moved locally to the next line Powder is sprayed. In this case, a biaxial 3-way mechanism is provided for each head to move the head.
If only one line head is used, it may also be used so that the position of the head is a predetermined distance (for example, the pitch of a plurality of nozzles) toward the nozzle structure for one layer or for a plurality of layers of the nozzle Powder is moved. Thus, it can be prevented that a large number of continuous defective regions D occur in the direction of lamination of the powder.
A heater for heat treatment of the formed model may also be used in each of the 21st
be provided three-dimensional modeling devices, which have been described above.
Furthermore, a cleaning mechanism m may be provided in each of the three-dimensional fashioning devices described above for cleaning a plurality of heads. In this case, while a liquid is being jetted from a first head, a second head is cleaned with the cleaning mechanism, whereby the efficiency time factor can be improved. The cleaning mechanism may be a mechanical cleaning using a brush or a wiper, a chemical cleaning using a cleaning fluid, or a combination thereof. ''
In the embodiments described above, a moving mechanism is provided to move a plurality of heads. However, the plurality of heads may also be stationary, and each of the three-dimensional modifying devices may also be provided with a moving mechanism for moving a modeling housing (modeling stage).
The present disclosure includes contents related to those of Japanese Priority Application JP 2010-284440 filed in the Japan Patent Office on Dec. 21, 2010, the entire contents of which are hereby incorporated by reference. It will be apparent to those skilled in the art that various changes, combinations, subcombinations, and variations may occur depending on design requirements or other factors, as long as they are in the scope of the appended claims or their equivalents.

权利要求:
Claims (11)
[1]
22

Claims 1. A three-dimensional modeling apparatus, characterized in that it comprises a stage on which a powdered material for lamination is applied; a feeding mechanism for supplying the powdery material to the stage for one layer at a time; a plurality of heads having a plurality of nozzles for spraying a model-forming liquid and adapted to inject the liquid onto the powdery material supplied to the stage with the feeding mechanism; and a moving mechanism that moves the plurality of heads relative to the stage in different directions, respectively.
[2]
2. Three-dimensional modeling device according to claim 1, characterized in that two heads are provided, and the moving mechanism moves the two heads so that the directions of movement of the two heads are perpendicular to each other.
[3]
The three-dimensional modeling apparatus according to claim 1, characterized in that the moving mechanism alternately moves the heads each time the powdery material for one layer has been supplied to the feeding mechanism.
[4]
The three-dimensional modeling apparatus according to claim 1, characterized in that the moving mechanism moves a first head when the powdery material for a continuous first number of layers is supplied from the feeding mechanism and a second head when the powdery material for a continuous second Number of layers supplied by the feed mechanism wurae.
[5]
The three-dimensional modeling apparatus according to claim 4, characterized in that the first number of 23 for number of layers differs from the second layer.
[6]
The three-dimensional modeling apparatus according to claim 1, characterized in that the stirring mechanism supplies a plurality of different powdery materials each corresponding to the plurality of heads to a stage.
[7]
7. Three-dimensional Modeiliervorrichtung according to claim 1, characterized in that the plurality of heads each injects different liquids.
[8]
A three-dimensional modeling apparatus, characterized in that it comprises a stage to which a powdery material for lamination is applied; a feeding mechanism for supplying the powdery material to the stage for one layer at a time; a head having a plurality of nozzle for spraying a model-forming liquid, which are formed so that they can inject the liquid onto the powdery material, which was supplied to the stage with the feeding mechanism; and a moving mechanism that moves the head in different directions relative to the stage, respectively, when the liquid is sprayed respectively on the powdery material for different layers supplied from the feeding mechanism.
[9]
The three-dimensional mode-splitting apparatus according to claim 8, characterized by further comprising a rotation mechanism which rotates the head about an axis extending in the direction of lamination of the powdery material.
[10]
A three-dimensional modeling method, characterized in that it comprises the steps of: supplying a powdery material for a layer onto a stage; • * * ♦ * * * ·· 24 • * * ♦ * * * ·· 24

"Spraying a liquid to form a model, from a first head onto the powdery material that is the stage." " while the first head is moved relative to the stage in a first direction; Supplying the powdered material for another layer onto the stage after the liquid has been injected from the first head; and spraying a liquid to form a model from a second head onto the powdery material supplied to the stage while the second head is moved relative to the stage in a second direction other than the first direction.
[11]
11. A model formed by a three-dimensional modeling method, comprising: supplying a powdery material for a layer to a stage; Spraying a liquid to impart a model from the first head onto the powdery material supplied to the stage while moving a first head in a first direction relative to the stage; Supplying the powdery material for another layer to the stage after the liquid has been jetted from the first head; and spraying a liquid to form a model from a second head onto the powdery material supplied to the stage while moving the second head relative to the stage in a second direction other than the first direction.

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同族专利:

公开号 | 公开日

JP2012131094A|2012-07-12|

AT510881A3|2015-03-15|

CN102555027A|2012-07-11|

AT510881B1|2015-05-15|

US20120156516A1|2012-06-21|

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法律状态:
2017-07-15| MM01| Lapse because of not paying annual fees|Effective date: 20161129 |

优先权:

申请号 | 申请日 | 专利标题

JP2010284440A|JP2012131094A|2010-12-21|2010-12-21|Three-dimensional molding device, three-dimensional molding method, and mold|

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