• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    STRUCTURE MANUFACTURING METHOD AND MANUFACTURING EQUIPMENT. The description refers to a method of fabricating a structure which includes providing a stack of a first layer of material to be a part of the structure and a restraining element, where the first layer of material is provided on a surface of the structure in the forming process, and a part of the restraining element is provided on a first layer surface of material on the reverse of the surface of the structure in the forming process, providing a supporting element between the restraining element and the surface of the structure in the forming process forming, removing the restraining element, and providing a second layer of material to be part of the surface structure of the first material layer and the supporting element exposed by removing the restraining element.
    公开号:BR112014004428B1
    申请号:R112014004428-7
    申请日:2013-06-17
    公开日:2020-08-25
    发明作者:Hibroshi Taniuchi；Kazuhiro Nakajima
    申请人:Canon Kabushiki Kaisha；
    IPC主号:
    专利说明:

    [0001] [0001] The present invention relates to a method of manufacturing a structure and a manufacturing apparatus. Fundamentals of the Invention
    [0002] [0002] In recent years, modeling of an intrinsically formed three-dimensional object designed using a computer has become popular. There is a great need in the field of manufacturing a wide variety of products in relatively small quantities, for example, tiny machine parts, and display samples of houses and food.
    [0003] [0003] As an example of such a method for making a three-dimensional object, a method is known in which a material to be a three-dimensional object is stacked in layers and a final structure is manufactured.
    [0004] [0004] In PTL 1, after the formation of a layer in the form of a part of a three-dimensional object, a material to be a support is provided in order to wrap that layer, and standardization is performed. A support element (support) is then formed, and more material to be the three-dimensional object is stacked on the support layers and on the three-dimensional object in the formation process. Such a method is described. Citation List Patent Literature PTL 1: US 2001/0042598 Summary of the Invention Technical problem
    [0005] [0005] However, in the PTL 1 method, the support layer and the three-dimensional object layer are produced in different processes and from different materials, and so it is difficult to match the thickness of both layers in the forming process. Since the amount of volume changes due to the effect of temperature varying depending on the material, it is assumed that the thickness of the layer differs between the layer to be the three-dimensional object and the support layer. In an object formed by stacking the layers with different thicknesses, the distortion is caused by the difference in thickness of the layers described above, and there is a fear that the desired final shape of the three-dimensional object cannot be obtained. Solution to the Problem
    [0006] [0006] The present invention provides a manufacturing method by which a structure formed with a high degree of precision of form can be obtained.
    [0007] [0007] In one aspect of the present invention, a method of fabricating a structure includes providing a stack of a first layer of material to be part of the structure and a restraining element, where the first layer of material is provided on a surface of the structure in the forming process, a part of the restraining element is provided on one surface of the first layer of material on the reverse side of the structure surface in the forming process, and the other part is provided above the surface of the structure in the forming process, provide a support element in order to fill the space between the restriction element and the structure surface in the forming process, remove the restriction element, and provide a second layer of material to be part of the structure on surfaces of the first layer of material and the exposed support element by removing the restraining element. Advantageous Effects of the Invention
    [0008] [0008] According to an example of the present invention, in the stacking process, the surface of a layer to be a structure and the surface of a layer of the support element can be produced precisely coplanar compared to the related technique, and a structure formed a high degree of form accuracy can be achieved.
    [0009] [0009] The additional features of the present invention will become clear from the description of the exemplified modalities with respect to the attached drawings. Brief Description of Drawings
    [0010] [0010] FIGS. 1A to 1B are schematic diagrams showing an example of a stacking modeling apparatus, according to a first embodiment of the present invention.
    [0011] [0011] FIGS. 2A to 2B are schematic diagrams showing an example of a stacking modeling apparatus, according to a second embodiment of the present invention.
    [0012] [0012] FIG. 3 includes sectional views showing schematically the steps of each of the examples of the method of fabricating a structure, according to the first embodiment of the present invention, and of a method of fabricating a structure of a comparative embodiment.
    [0013] [0013] FIG. 4 is a conceptual diagram showing the function of a stacking modeling apparatus, according to an embodiment of the present invention.
    [0014] [0014] FIGS. 5A to 5F are schematic cross-sectional views showing a part of the process of manufacturing a structure in the stacking modeling apparatus, according to the first embodiment of the present invention.
    [0015] [0015] FIGS. 6A to 6F are schematic sectional views showing a part of the process of manufacturing a structure in the stacking modeling apparatus, according to the first embodiment of the present invention.
    [0016] [0016] FIGS. 7A to 7E are schematic cross-sectional views showing a part of the process of manufacturing a structure in the stacking modeling apparatus, according to a third embodiment of the present invention. Detailed Description of the Invention
    [0017] [0017] The modalities of the present invention will be described below with respect to the drawings. First Mode
    [0018] [0018] FIGS. 1A and 1B are schematic diagrams showing an example of a stacking modeling apparatus that is a manufacturing apparatus that performs a method of manufacturing an object that is a three-dimensional structure, according to a first embodiment of the present invention. FIG. 1B is a perspective view of the entire apparatus, and FIG. 1A is a sectional view of the apparatus taken along line IA-IA of FIG. 1B, perpendicular to the surface of an intermediate transfer element 1. The intermediate transfer element 1 is carried by a means of transport 2. In FIGs. 1A and 1B, the standardization of a three-dimensional object is performed on the intermediate transfer element 1 arranged as a belt, where the pattern is transported by the means of transport 2 to the position of a modeling table 8, and is stacked on the three-dimensional object. In the intermediate transfer element 1, UV ink 4 ejected from a liquid ejection head 3 is supplied as a modeling pattern, and is transported to the position of the modeling table 8. On the modeling table 8, a pattern model 4, similar to a structure in the forming process, is already arranged in a stacked state and in a state supported by a support element 6. The support element 6 is injected into a container 7 through a filling medium. support 10. After the stacking of the modeling pattern layers is completed, the support element 6 can be removed by a support removal means 15. The support removal means 15 can be provided inside the stacking modeling apparatus, or the stacked layers of the modeling pattern and the support element 6 can be removed from the stacking modeling apparatus, and the support element 6 can be removed using an external removal means, such as a solvent.
    [0019] [0019] After the formation of a modeling pattern on the surface of the intermediate transfer element 1, said modeling pattern needs to be transferred. Then, the intermediate transfer element 1 can be made of a material that has a high release capacity from the modeling material. If the material of the intermediate transfer element 1 is not capable of being released, for example, if the modeling material is transferred as in offset printing, an object can be created. From the point of view of modeling precision, all the modeling material in the intermediate transfer element 1 can be transferred.
    [0020] [0020] In order to carry out the transfer stably, the intermediate transfer element 1 may have little elasticity. Suitable materials such as intermediate transfer element 1 include silicone rubber and fluorine rubber. Depending on the modeling material used for standardization, rejections sometimes occur. Then, the intermediate transfer element 1 can be surface treated according to the modeling material. The hardness of the rubber depends on the thickness of the elastic body. When the elastic body is thick, a hard rubber can be used. When the elastic body is thin, a relatively soft rubber can be used. When the elastic body is thick, a rubber with a hardness of approximately 80 degrees is suitable. When the intermediate transfer element 1 is treated as a belt as in the apparatus of the figures, a relatively soft rubber with a hardness of approximately 50 degrees to 20 degrees can be used in the form of a thin film with a thickness of approximately 0.1 to 0.5 mm.
    [0021] [0021] When high precision is required, it is appropriate to use a sheet of non-elastic polytetrafluoroethylene or a film coated with a sub-micron thickness of a mold release agent.
    [0022] [0022] In the apparatus of FIGs. 1A and 1B, an ejection head that has ejection ports that eject liquid is shown as a unit to form a modeling pattern on the intermediate transfer element 1, and a method in which a modeling material is ejected from the ejection to a desired position is shown. However, the present invention is not limited to these. Examples of other units include a digital recording device, such as an electrophotographic device or a dispenser. Patterns can be formed using a standardization method using a printing plate, such as offset printing or screen printing, while changing the used printing plate. Patterns obtained by a method, such as photolithography or electrolyte deposition, can be used without any problem. The standardization unit does not necessarily have to be located in the stacking modeling apparatus. In the present invention, patterns manufactured in an environment most suitable for each method and material can be used. That is, the standardization unit can be selected based on the material of the object and the modeling accuracy. In particular, an inkjet printer, which can perform standardization in a non-contact manner, is a very suitable standardization unit.
    [0023] [0023] Modeling patterns like layers are formed using UV ink 4 as a molding material that is a forming material. UV ink is solidified by ultraviolet irradiation, and a relatively resistant and light object can be produced. In addition to UV ink, thermo-adhesive ink and heat-curable ink are also suitable. In this method, as described above, a standardization medium does not necessarily have to be arranged in the stacking apparatus, and the layered patterns whose layers are made using a different standardization medium on the same model, according to the required precision and material , can also be stacked. By arranging materials of different colors in a layered pattern, a desired layer color can be achieved. The modeling material can be selected freely within the application range of the standardization unit used, and the standardization unit can be selected according to the material to be used.
    [0024] [0024] Here, FIGs. 6A to 6F are schematic cross-sectional views that explain a part of the manufacturing process in the apparatus for fabricating a structure, according to an embodiment of the present invention, and shows the same section of FIG. 1A. The object in the forming process shown in FIGs. 6A to 6F is the same as shown in FIGs. 1A and 1B, but it is simplified. The standardized modeling material shown in FIG. 1A is transported by means of transport 2 to the modeling table 8, is aligned with the object in the forming process by an alignment unit (not shown), and is brought to a state shown in FIG. 6A. Then, as shown in FIG. 6B, a stacking unit, including a modeling container 7, a modeling table 8, a lifting and lowering means 9, a support filler 10 and a support receiver 11, moves up and contact with the ink pattern 4.
    [0025] [0025] The transfer surface 501 that comes into contact with the ink pattern 4 is a plane formed by a modeling pattern 502 which is a structure in the forming process prepared to be previously transferred and stacked, and a support element 6 which is a solidified support material. The transfer surface 501 is held in a lower position than the upper end of the modeling container 7 by a layer thickness by the lifting and lowering means 9. The transfer surface 501 is raised until the upper end of the modeling container. modeling 7 contact the intermediate transfer element 1. The UV ink is placed between two planes: the surface of the intermediate transfer element 1 and the transfer surface 501, and both the upper and lower surfaces of the UV ink are planarized with a high degree of accuracy. Only the modeling material is transferred at the time of stacking. Then, the shape can be reproduced with a high degree of precision without the effect of contraction or deformation between the different materials. The modeling material is maintained in this state and is irradiated with ultraviolet light from a UV lamp 12 (shown in FIGS. 1A and 1B) arranged as a bonding and curing unit. The UV paint is hardened with its planarized surface, integrated with the previous modeling pattern, and forms an expanded 502 modeling pattern. The curing can be promoted by heat from the heater 13.
    [0026] [0026] Next, as shown in FIG. 6C, a support material 5 for the support element is injected into the modeling container 7 in a liquid state. The modeling container 7 has a shape that surrounds the modeling table 8 and restricts the fill range of the support material. The support material automatically flows into a space where the modeling pattern 502 does not exist, and so there is no need for alignment and restriction of the layer thickness. It is only necessary to stop the injection when the space is filled with the support material 5, just before the support material 5 overflows.
    [0027] [0027] The internal surface of the modeling container 7 must be prevented from adhering to the used liquid support material, and is preferably coated with polytetrafluoroethylene or similar.
    [0028] [0028] As a support element 6 material, a liquid material that is solidified by an external stimulus is suitable. In addition, a material that can be easily removed from the object is suitable. External stimuli include heat, light, electricity, magnetism and vibration. In particular, heat is easy to use the reversibility of the material. When, for example, paraffin wax is used as a support material 6, it can be injected at a temperature above the melting point and can be solidified by lowering the temperature below the melting point. If the temperature of the support material is set below the melting point, said support can easily be removed by maintaining the temperature above the melting point of the support material and below the melting point of the modeling material for a predetermined period of time. after completing the modeling.
    [0029] [0029] The support can be injected using a normal liquid movement method, such as pressure injection or reduced pressure suction. In order to prevent a filling failure, it is effective to increase fluidity by heating with heater 13 as a means of temperature control, or to assist filling by applying a tiny high frequency vibration with an ultrasonic vibrator or by reducing up the pressure.
    [0030] [0030] The injection of the support material can be performed basically each time a layer is stacked, but sometimes, there is no need to inject material each time a layer is stacked. When modeling a shape in which there is no shoulder, there is no need to use a support, if the resistance in the intermediate modeling stage is sufficient.
    [0031] [0031] When the modeling of an object has a start, it is possible to stack the layers without injecting support when stacking layers of modeling material without a shoulder and injecting the support into a plurality of layers at a time when the layers are stacked with bounce. In particular, when the layer thickness is small and filling of the support material is difficult, it can be injected at intervals.
    [0032] [0032] As shown in FIG. 6D, the support material 5 is solidified, is thus integrated with the already formed support element, and forms an expanded support element 6.
    [0033] [0033] Next, as shown in FIG. 6E, the intermediate transfer element 1 is detached and removed from the upper surface 501. The support element 6, after solidification, can maintain the pattern of modeling, and then even an isolated part that forms a shoulder can be fixed in one position specific. Then, the intermediate transfer element 1 can be detached after the support solidifies.
    [0034] [0034] The upper surface 501 of the modeling pattern exposed by the detachment of the intermediate transfer element 1 has been constrained by the surface of the intermediate transfer element 1. Then, the support element 6 and the modeling pattern 502 can form a highly regular surface precisely flat. This surface is moved by the lifting and lowering means 9 to a position lower than the upper end of the modeling container 7 by a layer thickness shown in FIG. 6F, in order to prepare to receive the next ink pattern in which the ink is arranged in a cross section of the object. The detachment of the intermediate transfer element 1, the lowering of the stacking unit, and the lowering of the transfer surface from the upper end of the modeling container 7 can be performed in any order.
    [0035] [0035] In FIGs. 1A and 1B, after completing the transfer of an ink pattern, the surface of the intermediate transfer element 1 is cleaned by the cleaner 12 when necessary, and the intermediate transfer element 1 is used repeatedly. However, the present invention is not limited to that. The intermediate transfer element 1 can be disposed after use, or it can be recycled.
    [0036] [0036] Second Mode
    [0037] [0037] FIGS. 2A and 2B are schematic diagrams showing an example of a stacking modeling apparatus that is a manufacturing apparatus that performs a method of manufacturing an object that is a three-dimensional structure, according to the second embodiment of the present invention. FIG. 2B is a perspective view of the entire apparatus and FIG. 2A is a sectional view of the apparatus taken along line IIA-IIA of FIG. 2B perpendicular to the surface of the intermediate transfer element 1.
    [0038] [0038] The apparatus of FIG. 2 does not have a means of standardization to form an object. The stacking unit, including a modeling table 8 that supports a support element 6 and an object, a lifting and lowering means 9, a modeling container 7 and an intermediate transfer element 1 is the same as in the first embodiment. The support filling means 10, the support receiver 11 and the cylinder 2 are also the same as in the first embodiment.
    [0039] [0039] In this embodiment, the modeling pattern 22 used can be produced, for example, by partially applying a polyester resin to the intermediate transfer element 1 using a separate screen printing apparatus and then hardening the polyester resin. As the intermediate transfer element 1, for example, a PET film thinly coated with silicone rubber can be used.
    [0040] [0040] The intermediate transfer element 1, in which a standardized layer to form an object is already provided, is configured in the device. Although an intermediate transfer element 1 wound on a cylinder is shown in FIGs. 2A and 2B, the sheet-type intermediate transfer elements 1 stacked in order can be supplied one by one from a classifier.
    [0041] [0041] When, as described above, a device that standardizes a layer to be an object, is separated from a stacking device, a less stressful operation can be performed if the devices differ in processing speed. In addition, when standards are subjected to inspection by an inspection device to inspect whether standardization is performed properly or not, after standardization and before stacking, the inspection can be performed effectively.
    [0042] [0042] In the apparatus of FIGs. 2A and 2B, the layer 22 modeling pattern on the intermediate transfer element 1 is solidified, and a means that applies adhesive to the modeling pattern 22 in order to perform bonding at the time of stacking is arranged. The modeling pattern 22 comes into contact with the adhesive application medium through transport by the transport medium, and passes over it, and the adhesive is applied to the surface of the modeling pattern 22.
    [0043] [0043] Although the type of adhesive used is not limited, said adhesive can be selected according to the material of the object, based on indices, such as contraction ratio and resistance of the adhesive. Although a roller laminator is represented as an adhesive applicator, the present invention is not limited to that, and a spray-type application medium, such as a sprayer, can also be used.
    [0044] [0044] When a sprayer is used, the adhesive adheres to the surface of the intermediate transfer element, not to the object. After stacking is completed, and at the stage of reliquefaction and removal of the support, the adhesive is removed at the same time. However, when the support element material is reused, the adhesive needs to be separated by filtration or the like. In this respect, a roller laminating medium that can apply the adhesive only to the upper surface of the existing modeling pattern as a protrusion is a suitable applicator.
    [0045] [0045] The gluing method at the time of stacking is not limited to the application of the adhesive. For example, it is also possible to form a cross-sectional pattern of an object from thermoplastic resin, to bring the pattern to a melted state by heating at the time of stacking, and to stack the pattern without using the adhesive.
    [0046] [0046] The stacking process is the same as the first modality. After the transfer is complete, the intermediate transfer element is rewound by a winding means 24, and is reused.
    [0047] [0047] The most advantageous effect obtained by the present invention is that, in each layer type pattern, there is no difference in thickness between the modeling material and the support element material, and the very high thickness accuracy can be reproduced. An object made by this one has no distortion and is highly accurate.
    [0048] [0048] In the first and second modality above, the intermediate transfer element 1 serves as a restraining element that restricts the upper surfaces of the support element 6 and the modeling pattern when expanding the support element 6. However, an element separate restraint from intermediate transfer element 1 can be used. For example, in FIGs. 6A and 6F, after the ink pattern 4 is transferred to the transfer surface 501 by the intermediate transfer element 1 and after the modeling pattern 502 is formed, said intermediate transfer element 1 can be removed, and a restraining element separated from the intermediate transfer element 1 it can come in contact with the upper surface of the modeling pattern 502. After that, the support material 5 can be injected, and a support can be formed, restricting the upper surface of the support element 6 with the restraining element, such that said upper surface of the support element 6 is coplanar with the upper surface 501 of the modeling pattern.
    [0049] [0049] FIG. 3 includes sectional views showing schematically the steps of each of the examples of the method of fabricating a structure according to the first embodiment of the present invention and a method of fabricating a structure of a comparative embodiment, and illustrates the effect of precision thickness of the layer-like patterns on the object. In FIG. 3, (a1) to (f1) show a comparative mode, and (a2) to (e2) show a stacking method according to an embodiment of the present invention.
    [0050] [0050] FIG. 3 (a1) shows a state in which a layer-like modeling pattern 302 is formed from a base material 301.
    [0051] [0051] Next, a support element 303 is arranged around the modeling pattern 302. This state is shown in FIG. 3 (b1). Then, the support element hardens and a change in volume is thus generated. The volume change is expansion or contraction depending on the material. In general, contraction occurs frequently and is shown in the explanatory diagrams. At this point, the surface is opened, and due to the difference in the shrinkage ratio between the materials of the modeling pattern 302 and the support element 303, as shown in FIG. 3 (d), the upper surface of the modeling pattern 302 differs from the upper surface of the support element 303 in height from the base material 301.
    [0052] [0052] Then, the transfer is performed as shown in FIG. 3 (d1). The modeling pattern 302 is transferred together with the support element 303 from the base material 301 to another base material 304.
    [0053] [0053] Repeating the process described above, a stacked object is formed. Since the thickness of each layer varies considerably from one part to the other, the layers 302 of the modeling patterns are not aligned as desired as shown in FIG. 3 (e2), and are stacked in a distorted state as shown in FIG. 3 (f1).
    [0054] [0054] On the other hand, the embodiment of the present invention is as follows. A modeling pattern 202 is formed on a plate element 201 (a2). Then, a plate element 204 contacts the surface of the pattern pattern 202 on the opposite side to the base material (b2). The material 203 of a support element is injected between the plate-like plate element 201 and the base material 204 (c2). The material of a support element is hardened (d2). The plate element 201 functions as a restraining element that restricts the upper surfaces of layer 202 of the shaping pattern and layer 203 of the upper element. Then, the surfaces of the support element layer and the modeling pattern layer can be formed at the same height and flat, and then a structure that has no distortion is manufactured as shown in FIG. 3 (e2).
    [0055] [0055] FIG. 4 shows an example of an apparatus control system for modeling a three-dimensional object of FIGs. 1A and 1B. In the apparatus for modeling a three-dimensional object such as a structure-making apparatus, which is denoted by the reference number 100, a CPU 101 is a main control unit of the entire system and controls each of the sections. A memory 102 includes a ROM storing a basic program of the CPU 101, and a RAM used to store the object data 104 received through an interface 103, and as a work area for processing the data. Upon receipt of a modeling start signal, CPU 101 begins processing to convert object data into split data issued according to the imposed conditions, and performs communication to check the status of the printer's means of transport 2 inkjet 3, the lifting and lowering medium 9, the support filling medium 10, and the cleaner 12. If modeling can be started, the transportation medium 2 and the lifting and lowering medium 9 move to the predetermined positions based on position detection information 105, an eject signal is sent to the inkjet printer 3 and modeling begins. When the stacking of the layers to be the three-dimensional object is completed, communication to check the state of the removal means 15 is performed in order to remove the support element, and the removal is initiated. Third Mode
    [0056] [0056] FIGS. 7A to 7E are schematic cross-sectional views showing the steps of a method of manufacturing an object according to a third embodiment of the present invention seen in the position of a cross section. The cross sections are taken in the same position as FIGs. 5A to 5F and of FIGS. 6A to 6F. In this mode, after completing the stacking to form a structure, the stacking of the next structure is performed without removing the support element.
    [0057] [0057] FIG. 7A shows the same state as the state shown in FIG. 6F. On the modeling table 8 in the modeling container 7, the modeling patterns 4 supported by the support element 6 are stacked. In this modality, at this stage, the stacking of the modeling patterns 4 that form the structure is completed.
    [0058] [0058] Next, as shown in FIG. 7B, the intermediate transfer element 1 and the shaping unit are moved to be closer to each other, and a material 5 of the support element is injected to fill the space between the stacked shaping patterns 4 and the shaping element. intermediate transfer 1.
    [0059] [0059] The intermediate transfer element 1 is detached, and as shown in FIG. 7C, the modeling pattern layer 4 is inlaid in the support element 6.
    [0060] [0060] Next, as shown in FIG. 7D, a layer of a modeling pattern 1004 to fabricate a new structure is provided on the exposed surface by detaching the transfer element Intermediate 1. The next modeling pattern 1004 is stacked on it.
    [0061] [0061] After that, the expansion of the modeling pattern 1004 and the expansion of the support material 6 are performed sequentially as shown in FIG. 7E. Then, the support element 6 is removed by dissolution or the like. Thus, two separate structures formed by stacking modeling patterns 4 and 1004 can be obtained. Example 1 An example of the present invention will be described below.
    [0062] [0062] The data of an object has been preliminarily converted into slice data with a given spacing between layers. In example 1, slice data with a spacing of 25 micrometers was used.
    [0063] [0063] As an intermediate transfer element 1, a belt produced by the formation of a layer of fluorine rubber (DAI-EL T350 manufactured by Daikin Industries, Ltd.) 150 micrometers thick in a PET film 50 micrometers thick it was used.
    [0064] [0064] A UV ink pattern was applied to the intermediate transfer element 1 using an inkjet printer unit, according to the slice data of the first layer of the object.
    [0065] [0065] When only colored inks are used, the amount of ink applied cannot be equalized. Then, the ink volume was adjusted to a constant value using light ink. Paint Application Conditions Liquid droplet size = 30 pl Droplet application range = 600 dpi Quantity of ink applied per address = 150 pl Ink Prescription Pigment: 1 part Black: carbon black Cyan: blue pigment 15 Magenta: red pigment 7 Yellow: yellow pigment 74 White: titanium oxide Clear: microparticulate silica Acrylic acid copolymer - acrylic and ethyl acid styrene: 10 parts (acid value: 180, average molecular weight: 4000) Light curing resin: 20 parts (water-soluble tri-functional acrylate) Photoinitiator: 2 parts (water-soluble acylphosphine) Diethylene glycol: 6 parts Ethylene glycol: 3 parts Surface active agent: 1 part (Acetylenol EH manufactured by Kawaken Fine Chemicals Co., Ltd.) Ion exchange water: The rest.
    [0066] [0066] The intermediate transfer element is transparent and can receive the hardening light emitted by a UV lamp arranged internally, from the reverse side of the belt.
    [0067] [0067] At the time of standardization, the paint is irradiated relatively strongly in order to prevent mixing of colors and excessive spreading of paint. However, the amount of light has been adjusted so that fluidity is maintained until stacked.
    [0068] [0068] As shown in FIGs. 1A and 1B, while the ink pattern 4 applied to the belt-type intermediate transfer element 1 is carried by the intermediate transfer element 1, the water in the ink is evaporated.
    [0069] [0069] The stacking process will be described below with reference to FIGs. 5A to 5F. FIGs. 5A to 5F are schematic cross-sectional views that explain a part of the manufacturing process in the apparatus for fabricating a structure, according to an embodiment of the present invention, and shows the same section of FIG. 1A.
    [0070] [0070] In the stacking unit, before receiving the modeling pattern 4, a support element was preliminarily placed on the modeling table 8 (FIG. 5A). Thus, it becomes easier to remove the object after stacking is complete, and the gap between the intermediate transfer element 1 and the transfer surface was able to be organized.
    [0071] [0071] The top end of the modeling container 7 has been brought into contact with a part where there is no pattern of paint pattern 4, of the surface of the intermediate transfer element 1 on which the pattern of paint 4 is provided (FIG. 5B). At this stage, the modeling pattern 4 on the intermediate transfer element 1 is a semisolid with a shape close to a hemisphere, its top came into contact with the support element on the modeling table, and the modeling pattern 4 was compressed to 25 micrometers, while being planarized. In this state, irradiated with light and placed between the intermediate transfer element 1 and solidified support material 6, a slice pattern of the modeling pattern 4 was produced.
    [0072] [0072] With the lowering of the modeling table 8 by a layer thickness, the space between the intermediate transfer element and the solidified support material was filled with a support material heated to approximately 60o C and melted (paraffin wax: commercially available at 46 ° C (115 degrees Fahrenheit)). In order to fill each corner, the temperature was controlled by a heater (not shown) on the reverse side of the intermediate transfer element 1, and the fluidity of the material 5 of the support element was maintained. At that point, a portion of the pre-existing support element melts. However, since the modeling pattern 4 is maintained by the intermediate transfer element 1, the displacement does not occur.
    [0073] [0073] After the filling of the support material is complete, the air was blown to cool, the material 5 of the support element was solidified, and the support 6 was expanded (FIG. 5D).
    [0074] [0074] Then, the stacking unit was lowered and the intermediate transfer element 1 was detached and then removed from the unit (FIG. 5E).
    [0075] [0075] After that, the entire stacking unit was lowered, and the intermediate transfer element 1 was detached from the ink pattern 4 (FIG. 5E). Then, the modeling table 8 was lowered (FIG. 5F).
    [0076] [0076] After the ink pattern is transferred, the surface of the intermediate transfer element 1 is cleaned by a cleaner, and the intermediate transfer element is used repeatedly.
    [0077] [0077] This was repeated. After stacking all layers of modeling patterns, the temperature was raised to 60 ° C, the support material was melted and a colored structure was able to be removed.
    [0078] [0078] In the finished structure, no detachment was observed between the layers.
    [0079] [0079] While the present invention has been described with respect to the exemplified embodiments, it is understood that the invention is not limited to the exemplified embodiments described. The scope of the following claims is in line with a broader interpretation to cover all such modifications and equivalent structures and functions.
    [0080] [0080] This application claims the benefit of Japanese Patent Application No. 2012-137917, filed on June 19, 2012, which is incorporated herein by reference.
    权利要求:
    Claims (14)
    [0001]
    Method for fabricating a structure, comprising: providing a stack of a first layer of material (202) to be a part of the structure and a restraining element (201), where the first layer of material (202) is provided on a surface of the structure in the forming process, a part the restraining element (201) is provided on one surface of the first layer of material (202) on the reverse of the surface of the structure in the forming process, and the other part is provided above the surface of the structure in the forming process; characterized by the fact that it still comprises providing a support element (6, 203) by providing a material to form a support element (6, 203) so as to fill a space between the restraining element (201) and the surface of the structure in the forming process, and then the material to form a support element (6, 203) is hardened, with the restraining element (201) on the surface of the first layer of material (202) on the reverse side of the surface of the structure in the forming process; removing the restraining element (201); and providing a second layer of material to be a part of the surface structure of the first layer of material (202) and the supporting element (6, 203) exposed by removing the restraining element (201).
    [0002]
    Method for manufacturing a structure according to claim 1, characterized in that when supplying a stack of a first layer of material (202), the first layer of material (202) is supplied in a state supported by the element of constraint (201), on the surface of the structure in the formation process.
    [0003]
    Method for fabricating a structure according to claim 2, characterized in that it further comprises ejecting a material to form the first layer of material (202) from a liquid ejection head configured to eject the liquid from an ejection port to form the first layer of material (202) on the surface of the restraining element (201).
    [0004]
    Method for manufacturing a structure according to any one of claims 1 to 3, characterized in that the supply of the support element comprises injecting the material to form a support element (6, 203) in the space between the restraining element (201) and the surface of the structure in the forming process, and solidify the material to form the support element (6, 203) with the restraining element (201) on the surface of the first layer of material (202) on the reverse side of the structure surface in the formation process.
    [0005]
    Method for making a structure according to any one of claims 1 to 4, characterized in that the material to form the first layer of material (202) contains resin.
    [0006]
    Method for fabricating a structure according to any one of claims 1 to 5, characterized in that it further comprises, after supplying a second layer of material to be part of the structure on surfaces of the first layer of material (202) and of the support element (6, 203) exposed by removing the restraining element (201), remove the support element (6, 203).
    [0007]
    Method for making a structure according to any one of claims 1 to 6, characterized in that the support element (6, 203) is formed from a paraffin wax.
    [0008]
    Apparatus for manufacturing a structure, characterized by the fact that it comprises: a material layer supply unit configured to provide a stack of a first material layer (202) to be a part of the structure and a restraining element (201), where the first material layer (202) is provided in a surface of the structure in the forming process, a part of the restraining element (201) is provided on a surface of the first layer of material (202) on the reverse side of the surface of the structure in the forming process, and the other part is provided above the structure surface in the formation process; a support element supply unit configured to provide a material for forming a support element (6, 203) so as to fill a space between the restraining element (201) and the surface of the structure in the forming process, wherein the support element supply unit (10) is configured to harden the material to form the support element (6, 203), with the restraining element (201) on the surface of the first material layer (202) on the reverse side the surface of the structure in the formation process; and a removal unit configured to remove the restraining element (201), wherein the material layer supply unit (10) provides a second layer of material to be a part of the surface structure of the first material layer (202) and the support element (6, 203) exposed by removing the restraining element (201) by the removal unit.
    [0009]
    Apparatus for fabricating a structure according to claim 8, characterized in that the material layer supply unit provides the first material layer (202) in a state supported by the restraining element (201), on the surface of the structure in the training process.
    [0010]
    Apparatus for making a structure according to claim 9, characterized in that it additionally comprises a liquid ejection head configured to eject liquid from an ejection port, where the liquid ejection head ejects a material to form the first layer of material (202) to form the first layer of material (202) on the surface of the restraining element (201).
    [0011]
    Apparatus for manufacturing a structure according to any one of claims 8 to 10, characterized in that the support element supply unit is configured to inject material to form the support element (6, 203) in the space between the restraining element (201) and the surface of the structure in the forming process, and solidifying the material to form the support element (6, 203) with the restraining element (201) on the surface of the first layer of material (202) on the reverse side of the surface of the structure in the formation process.
    [0012]
    Apparatus for manufacturing a structure according to any one of claims 8 to 11, characterized in that the material for forming the first layer of material (202) contains resin.
    [0013]
    Apparatus for manufacturing a structure according to any one of claims 8 to 12, characterized in that it additionally comprises a support element removal unit configured to remove the support element (6, 203).
    [0014]
    Apparatus for manufacturing a structure according to any one of claims 8 to 13, characterized in that the support element (6, 203) is formed of a paraffin wax.
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    同族专利:
    公开号 | 公开日
    US20170203510A1|2017-07-20|
    EP2736701B1|2017-08-09|
    BR112014004428B8|2020-09-15|
    KR101567267B1|2015-11-06|
    RU2564355C1|2015-09-27|
    KR20140043831A|2014-04-10|
    WO2013190817A1|2013-12-27|
    BR112014004428A2|2017-03-28|
    CN103764377A|2014-04-30|
    JP2014024329A|2014-02-06|
    EP2736701A4|2015-03-25|
    US9636897B2|2017-05-02|
    US20140182775A1|2014-07-03|
    RU2014107727A|2015-09-10|
    EP2736701A1|2014-06-04|
    CN103764377B|2016-03-02|
    JP6253273B2|2017-12-27|
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    法律状态:
    2018-03-06| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2018-03-13| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2018-03-20| B06I| Publication of requirement cancelled [chapter 6.9 patent gazette]|Free format text: ANULADA A PUBLICACAO CODIGO 6.6.1 NA RPI NO 2462 DE 13/03/2018 POR TER SIDO INDEVIDA. |
    2019-10-15| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-07-14| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-08-25| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 17/06/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    2020-09-15| B16C| Correction of notification of the grant [chapter 16.3 patent gazette]|Free format text: REF. RPI 2590 DE 25/08/2020 QUANTO AO INVENTOR. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2012137917|2012-06-19|
    JP2012-137917|2012-06-19|
    PCT/JP2013/003759|WO2013190817A1|2012-06-19|2013-06-17|Manufacturing method of structure and manufacturing apparatus|
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