Insulation material for 3D printed architectural structure and its formation method

Abstract

To provide a new 3D printed architectural structure and its formation method.SOLUTION: A forming method of a 3D printed architectural structure includes a first step of forming a hollow structured laminate molded wall 20 as a wall 10 of a building using a 3D printer device 40, and a second step of filling a hollow portion 25 of the laminate molded wall 20 with insulating foam particles 31 output by the 3D printer device 40 to form a filled insulating portion 30.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a heat insulating material for 3D printer building structures and a method for forming the same.

[0002] The term "3D printer" used in the technical field of the present disclosure (specification, claims, drawings) means a 3D printer for construction capable of laminating and forming structural elements such as walls in a building, and the material (laminated material) thereof is concrete, mortar, ceramic, or the like. Therefore, it does not mean a household or business 3D printer used on a so-called desktop and using a resin filament as a material.

[0003] Similarly, the term "3D printer construction" means a building or its architectural style that includes, as a structural element of the building, a structure (referred to as a "3D printer building structure" in the present disclosure) laminated and formed by a 3D printer as a structural element of the building.

[0004] Furthermore, the term "laminated forming" means forming an object by the output of a 3D printer, and does not mean forming an object by means other than a 3D printer.

Background Art

[0005] 3D printer construction has attracted attention as a new construction method (see Patent Document 1). As an example, in 3D printer construction, a hollow wall structure that functions as a wall of a building is laminated and formed by a 3D printer in a factory and transported to a construction site. Next, reinforcing bars for columns erected on a foundation placed at the construction site are inserted into the hollow interior of the wall, and the wall is installed on the foundation. Thereafter, concrete is injected into the hollow interior from the upper end opening of the wall to form a building that meets building standards.

[0006] Such 3D printer construction has the following advantages: firstly, it can reduce construction costs and construction periods; secondly, since the wall is formed by laminating with a 3D printer, it is relatively easy to produce walls including curved surfaces, and it is also suitable for buildings with a high degree of design freedom that are difficult with conventional construction methods. Therefore, it is regarded as a construction method superior to conventional methods, and its use is expected not only in the field of architecture but also in fields such as civil engineering.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] Therefore, the present disclosure provides a new heat insulation material for 3D printer building structures and a method for forming the same.

Means for Solving the Problems

[0009] The first aspect of the present disclosure is a method for forming a heat insulation material for a 3D printer building structure, in which a hollow portion of a laminated wall having a hollow structure formed of a 3D printer building structure constituting a wall of a building is filled with a large number of heat insulation foamed particles having an adhesive layer formed thereon, and then the adhesive layer is solidified to form a heat insulation material.

[0010] According to this, by filling the hollow portion of a laminated wall having a hollow structure formed of a 3D printer building structure constituting a wall of a building with a large number of heat insulation foamed particles having an adhesive layer formed thereon and then solidifying the adhesive layer to form a heat insulation material (filled heat insulation portion), a heat insulation material made of heat insulation foamed particles can be formed in the hollow portion of the laminated wall, and a new heat insulation structure in 3D printer construction can be realized.

[0011] In addition, since the heat-insulating foam particles have an adhesive layer, when filling the hollow part, the heat-insulating foam particles can be made to flow while being joined together by the adhesive layer. Therefore, compared with the case where there is no adhesive layer, it is possible to prevent the heat-insulating foam particles from scattering to the periphery or the filling from easily collapsing. This is particularly advantageous when filling heat-insulating foam particles into a laminated wall installed outdoors, and it can effectively prevent the lightweight heat-insulating foam particles from scattering under the influence of wind outdoors. Furthermore, since the heat-insulating foam particles have an adhesive layer, for example, even when it becomes necessary to make holes in the laminated wall during interior finishing work or carpentry work, the heat-insulating foam particles are fixed by the solidified adhesive layer, so it is possible to avoid the inconvenience of the heat-insulating foam particles flowing out from the holes to the outside.

[0012] The filling of the heat-insulating foam particles can be performed by a "filling supply device". As an example, the filling supply device can use a foam particle feeder including a screw feeder and a hopper, a 3D printer forming the laminated wall, and the like. The foam particle feeder can further include a spreading device for the adhesive for forming the adhesive layer, and the spreading device can be, for example, a spraying device that sprays the adhesive in a mist form.

[0013] The heat-insulating foam particles can be biodegradable foam particles derived from biomass. Since biodegradable foam particles can be easily hydrolyzed due to their alkalinity when mixed with concrete, mortar, etc., the recyclability as building materials after the disassembly of the 3D printer building structure can be enhanced.

[0014] A second aspect of the present disclosure is a heat-insulating material for a 3D printer building structure, which includes a filling heat-insulating part having a large number of heat-insulating foam particles filled in a hollow part of a laminated wall having a hollow structure formed by a 3D printer building structure constituting a wall of a building, and an adhesive layer for fixing the heat-insulating foam particles to each other.

[0015] According to this, a filling heat-insulating part corresponding to the shape of the hollow part of the laminated wall can be obtained, and a new heat-insulating structure in 3D printer building can be realized.

[0016] The filling and heat insulating part can be a massive solid in which a large number of the heat insulating foams are fixed in a lump by the adhesive layer. According to this, for example, when interior work is being done during construction or carpentry work is being done after construction, in the case where an operation of making a hole in the laminated molded wall is carried out, it is possible to avoid the inconvenience that the heat insulating foam particles filled in the hollow part flow out from the hole.

[0017] The heat insulating foam particles can be biodegradable foam particles derived from biomass. Since biodegradable foam particles can be easily hydrolyzed due to their alkalinity when mixed with concrete, mortar, etc., the recyclability as building materials after the disassembly of the 3D printer building molded body can be enhanced.

[0018] A third aspect of the present disclosure is a building having a wall provided with the heat insulating material for any of the 3D printer building molded bodies. According to this, a new building having the advantages of the 3D printer building molded body can be realized.

Brief Description of the Drawings

[0019] Hereinafter, the drawings necessary for more clearly explaining the embodiments of the present disclosure will be briefly described. It should be understood that the following drawings are merely examples of the embodiments illustrated in the present disclosure and do not limit the scope of the present invention. Based on these drawings, other related drawings can also be obtained on the premise that those skilled in the art do not expend creative effort. Each structural element shown in the drawings is not described with the dimensions of the examples enlarged or reduced, but is shown in a size for easy understanding by illustration.

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0021] Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following embodiments do not limit the description of the claims, and not all of the configurations provided in this embodiment are necessarily essential as the solution means according to the present disclosure.

[0022] All embodiments and selectable embodiments included in the present disclosure may be combined with each other to form a new embodiment. Also, all technical features and selectable technical features included in the present disclosure can form new technical features by combining them with each other.

[0023] The term "or" used in this specification and the claims is used as an inclusive term. For example, "A or B" means "A, B, or both A and B". "A", "B", and "both A and B" each satisfy "A or B".

[0024] In this specification and the claims, unless there are clear definitions or limitations, terms such as "mounting", "connecting", "connecting", "fixing", "fixing" are understood in a broad sense. For example, fixed connection, removable connection, detachable connection, integral connection can all be included in these terms. Also, direct connection without an intervening medium, indirect connection with an intervening medium, etc. can be included in these terms unless otherwise specified. The same applies to terms such as "mounting" other than "connecting", which can also be understood in a broad sense. Those skilled in the art will understand the specific meaning of the above terms in the present disclosure according to the specific situation.

[0025] In this specification and the claims, when "first", "second",... "nth" are described, they are used to identify different elements and do not indicate a specific order, superiority or inferiority, etc. For components that are common in the embodiments and have the same effect, the same reference numerals are assigned and repeated descriptions are omitted.

[0026] In this specification and the claims, terms such as "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial direction", "radial direction", "circumferential direction", etc., and directions or positional relationships represented by terms including these terms are based on the drawings attached to this application and are for the convenience of explaining the invention and embodiments. Unless otherwise specified, the use of specific structural elements does not explicitly or implicitly limit or configure them in a specific direction, nor does it limit the claims and embodiments.

[0027] In this specification and the claims, when terms such as "about", "substantially", "essentially" are used, for the numerical values, shapes, structures, and positions with these terms attached, they are understood to include the numerical value and the numerical values before and after it, as well as those that can be said to be the same as the shape, etc., and further include specific positions and positional relationships that can be regarded as the same. For example, when "about 3" is described, as long as it has the technical features and technical significance claimed in this disclosure, the numerical values before and after it can also be included in "about 3". Also, in the case of "B that is substantially the same as A", in addition to the case where B is exactly the same as A, as long as it has the technical features and technical significance claimed in this disclosure, shapes, etc. that are not exactly the same but have differences can also be included in the scope of "substantially". Furthermore, in the case of "A and B are substantially in the same position", in addition to the case where the positions of A and B are exactly the same, the case where the positional relationship is partially deviated can also be included in "the same position".

[0028] The "range" disclosed in this application is limited in the form of a lower limit and an upper limit. A predetermined range is limited by selecting one lower limit value and one upper limit value that define the boundaries of a specific range. The range thus limited may or may not include the end values and may be arbitrarily combined, that is, any lower limit and any upper limit may be combined to form one range. For example, if ranges of 60 - 120 and 80 - 110 are listed for a specific parameter, ranges of 60 - 110 and 80 - 120 are also understood to be contemplated. In addition, when the minimum range values 1 and 2, and the maximum range values 3, 4, and 5 are listed, the following ranges 1 - 3, 1 - 4, 1 - 5, 2 - 3, 2 - 4, and 2 - 5 are all contemplated ranges. In this application, unless otherwise specified, the numerical range "a - b" is a shortened expression representing all combinations of real numbers between a and b, where both a and b are real numbers. For example, the numerical range "0 - 5" means that all real numbers between "0 - 5" are listed in this specification, and "0 - 5" is merely an abbreviated representation of combinations of these numerical values. Also, when it is described that a certain parameter is an integer ≧2, it is equivalent to disclosing that the parameter is, for example, the integer 2, 3, 4, 5, etc.

[0029] Unless otherwise specified, all steps of this application may be performed sequentially or randomly, and preferably, are performed sequentially. For example, the fact that the method includes steps (a) and (b) means that the method may include steps (a) and (b) performed sequentially, or steps (b) and (a) performed sequentially. For example, the fact that the method mentioned above may further include step (c) means that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), may include steps (a), (c), and (b), may include steps (c), (a), and (b), etc.

[0030] In buildings constructed using 3D printer architecture, in order to obtain a highly energy-efficient air conditioning effect, it is conceivable to enhance the heat insulation performance of the wall by packing glass wool or filling with urethane foam in the hollow part of the wall with a hollow structure (laminated wall). However, it is difficult to evenly fill the hollow parts of the tall laminated walls used as building walls with these heat insulating materials, and there are concerns about the deterioration of the working environment due to the scattering of materials in the on-site injection of urethane foam. Also, when using heat insulating materials produced in a factory, the heat insulating materials must be pre-processed to match the shape of the wall. In this case, for example, for walls with a three-dimensional shaped surface rather than a flat wall surface like the curved walls which are an advantage of 3D printer architecture, the processing of the heat insulating materials themselves to match the shape of the wall is difficult. Furthermore, in the construction field, addressing the reduction of continuous environmental load is emphasized, and it is necessary to respond to the demand for such environmentally friendly technologies.

[0031] As a result of earnestly researching new technologies for imparting heat insulation properties to the noted 3D printer architectural structures, the inventor has obtained the technology according to the present disclosure.

[0032] Description of 3D printer building form (Figures 1, 2)

[0033] FIG. 1 is an external perspective view of a wall 10 of a building which is an example of a "3D printer architectural structure". The wall 10 has a laminated wall 20 and a filled heat insulation part 30. The illustrated wall 10 is entirely configured as a 3D printer-formed object, but is not limited thereto, and the wall 10 can include a non-laminated part that does not use a 3D printer. In this case, the 3D printer architectural structure becomes a composite including a 3D printer-formed object and a non-laminated part. The non-laminated part can be configured with building materials such as metal, resin, wood, or concrete.

[0034] The laminated forming wall 20 is formed as a 3D printer-formed object with a hollow structure. The laminated forming wall 20 has an outer wall portion 21, an inner wall portion 22, a side wall portion 23, a reinforcing portion 24, and a hollow portion 25. The outer wall portion 21 functions as the outer wall of the building, and the inner wall portion 22 functions as the inner wall of the building. Decorative materials for exterior or interior use may be installed on the surfaces of the outer wall portion 21 and the inner wall portion 22. The side wall portion 23 is a part that connects the lateral end portions of the outer wall portion 21 and the inner wall portion 22. An opening frame for installing, for example, a door or a window can be provided in the side wall portion 23, and a door frame or a window frame as building materials can be installed. The reinforcing portion 24 is a part that connects the outer wall portion 21 and the inner wall portion 22 and reinforces the structural strength of the wall 10. Here, the reinforcing portion 24 is exemplified as an X-shaped one, but other shapes may be used, and the installation position can also be selected according to the structural strength required for the structure and other functional requirements of the building.

[0035] The hollow portion 25 is formed as a cylindrical inner peripheral wall formed by combining the opposing surfaces of the outer wall portion 21, the inner wall portion, the side wall portion 23, and the reinforcing portion 24, and the inner space surrounded by the cylindrical inner peripheral wall is the "inter-wall gap". The hollow portion 25 is formed so as to penetrate from the upper end to the lower end of the wall 10, but is not limited thereto, and may have a "top surface portion" that closes the upper end or a "bottom surface portion" that closes the lower end. In this case, the top surface portion and the bottom surface portion can be formed by a 3D printer as a part of the laminated forming wall 20, and can also be constituted by other building materials. A filling heat insulation portion 30 is laminated and filled in the hollow portion 25, and the wall 10 is configured as an "interrupted heat insulation method" having heat insulation properties within the wall thickness.

[0036] In FIG. 1 shown as an example, 16 hollow portions 25 are provided in the wall 10, and the filling heat insulation portion 30 described later is provided in all of them, but it is not limited thereto, and a configuration in which the filling heat insulation portion 30 is not installed in one or more of them may be used. In this case, the hollow portion 25 in which the filling heat insulation portion 30 is not installed can be configured as an "air conditioning ventilation portion" for flowing air conditioning air or a "wiring portion" for inserting electric wires or the like.

[0037] As the material of the laminated forming wall 20 (laminated material for 3D printer construction), concrete, mortar, ceramic, etc. can be used, and a filler having functionality such as enhancing structural strength can be included as necessary.

[0038] The filling and heat insulating part 30 is formed as an agglomerate of heat insulating foam particles with an adhesive layer formed in advance. The filling and heat insulating part 30 can be formed by a filling supply device. As an example, the filling supply device can use a foam particle feeder including a screw feeder and a hopper, a 3D printer for forming the laminated forming wall, etc. The 3D printer may be used not only to output the above-mentioned concrete, etc. from a nozzle to form the laminated forming wall 20, but also to output heat insulating foam particles from the nozzle to form the filling and heat insulating part 30. Preferably, it can be filled into the hollow part 25 of the laminated forming wall 20 by a vertically arranged screw feeder. The filling and heat insulating part 30 is formed by the agglomeration of the filled heat insulating foam particles.

[0039] As shown in the schematic diagram of FIG. 2, each heat insulating foam particle 31 is composed of a resin particle 32 and an adhesive layer 33 covering its surface. The filling and heat insulating part 30 is formed as an agglomerate of such a large number of heat insulating foam particles 31 as a filler.

[0040] As the resin particle 32 forming the heat insulating foam particle 31, a foamed resin having heat insulating properties can be used, and the material resin is not limited, and known resin materials, such as polyethylene-based resins, polyolefin-based resins, polystyrene-based resins, and polyester-based resins, can be used as an example.

[0041] Among these material resins, biodegradable resins such as polylactic acid resin (PLA) and polybutylene succinate resin (PBS) can be preferably used. In recent years, in the construction field, reducing the continuous environmental load has been emphasized. To meet the demand for such environmentally friendly technologies, it is preferable to use materials that are relatively easy to recycle or materials that are easily biodegradable by microorganisms in the soil. Therefore, by using resin particles 32 made of biodegradable resin in the filling and heat insulation part 30, it becomes possible to reuse the waste materials after disassembling the wall 10 as lightweight aggregates. In addition, since polylactic acid resin is also used as a carrier for microorganisms that contribute to the repair of cracks and the like when the laminated molding wall 20 is formed of self-healing concrete, it can also be used as a suitable material resin for the resin particles 32 in the filling and heat insulation part 30 in this respect. As an example of such a biomass-derived biodegradable resin, the biodegradable resin foam "RETNA FOAM BIO" (PLA resin) manufactured by Sekisui Chemical Co., Ltd. can be exemplified.

[0042] The shape of the resin particles 32 forming the heat insulation foam particles 31 can be exemplified by bead shape, but is not limited thereto, and other shapes may be used. However, from the viewpoint of forming the adhesive layer 33 that coats the surface of the resin particles 32, the bead shape that is relatively easy to form is preferable. The particle size of the resin particles 32 is not limited either, as long as it is easy to fill the hollow part 25. Although it is possible to fill the hollow part 25 with the heat insulation foam particles 31 manually, the resin particles 32 and the adhesive may be kneaded and extruded and filled as the heat insulation foam particles 31 by an apparatus equipped with a screw for kneading the resin particles 32 and the adhesive. Furthermore, it is preferable to fill with a 3D printer described later.

[0043] From the viewpoint of imparting heat insulation properties, the foaming form of the resin particles 32 is preferably closed cells.

[0044] The subsequent layer 33 is formed so as to coat the surface of the resin particles 32. The adhesive material for forming the adhesive layer 33 is not particularly limited as long as it can bond the resin particles 32 together. As the aqueous adhesive, vinyl acetate emulsion, acrylic emulsion, natural rubber emulsion, polyurethane emulsion, etc. can be used. As those suitable for the aforementioned environmental response, PLA-based adhesives, more specifically, PLA hot melt fibers or PLA emulsions can be used.

[0045] Forming method of 3D printer building form (Figures 3, 4)

[0046] Next, as a method for forming a 3D printer building formwork, the method for forming the wall 10 will be described.

[0047] Description of 3D printer device 40 (Figure 3)

[0048] As shown in FIG. 3, the 3D printer device 40 includes a nozzle device 41, a resin particle supply device 42, an adhesive supply device 43, a resin particle stocker 44, and an adhesive stocker 45. The 3D printer device 40 functions not only as a device for forming the laminated molding wall 20 but also as a "filling supply device" for the heat insulating foam particles 31 in that it can also form the filling heat insulating portion 30.

[0049] The nozzle device 41 includes an output nozzle 41a and a drive device 41b. The output nozzle 41a is a device that extrudes a laminating material for forming the laminated molding wall 20 and the filling heat insulating portion 30 to perform laminated molding. The drive device 41b is a device that moves the output nozzle 41a, and in this embodiment, a robot arm is exemplified. A control device 41c that is a personal computer is connected to the nozzle device 41. The control device 41c controls the output operation of the output nozzle 41a and the movement of the drive device 41b by executing a program in which an arithmetic processing device controls the 3D printer device 40. The program controls those laminated moldings based on the 3D printer data stored in the storage device of the control device 41c. As the 3D printer data, 3D-CAD data can be used.

[0050] The resin particle supply device 42 is a device that supplies resin particles 32 to a first supply path 46 formed of a pipe. A resin particle stocker 44 is connected to the primary side of the resin particle supply device 42, and resin particles can be supplied as needed.

[0051] The adhesive supply device 43 is a device that supplies an adhesive for coating the resin particles 32 to a second supply path 47 formed of a pipe. The first supply path 46 and the second supply path 47 are connected at a confluence part 48. Therefore, the resin particles 32 and the adhesive are sent to a third supply path 49 formed of a pipe in a state of being kneaded at this confluence part 48. As an example, the kneading of the resin particles 32 and the adhesive is provided with a screw feeder at the confluence part 48, and can be extruded into the third supply path 49 while being kneaded by the screw. The third supply path 49 is connected to the output nozzle 41a, and the heat-insulating foamed particles 31 with the adhesive layer 33 spread on the surface of the resin particles 32 are supplied to the output nozzle 41a.

[0052] Description of filling supply device 60 (Figures 4, 5)

[0053] The above-described 3D printer device 40 has shown an example in which the laminated forming wall 20 and the filled heat-insulating part 30 can be formed. However, the 3D printer device 40 can be used to form the laminated forming wall 20, and the filled heat-insulating part 30 can also be formed without using it. As an example, it is possible to fill manually, but here, an example of using the filling supply device 60 will be described.

[0054] The filling supply device 60 includes a screw feeder 61. The vertical screw feeder 61 includes a screw part 62, a hopper part 63, and a spreading device 64. Although a vertical screw feeder 61 is illustrated in FIG. 4, a horizontal one may also be used. Also, although the filling supply device 60 is illustrated as including the resin particle supply device 42, the adhesive supply device 43, the resin particle stocker 44, and the adhesive stocker 45, it may not include them.

[0055] The resin particles 32 are supplied to the hopper section 63, and an adhesive in a mist form is ejected by a spreading device 64 disposed in the hopper section 63, so that the adhesive adheres to the surface thereof. The resin particles 32 with the adhesive adhered thereto are sent from the hopper section 63 to the screw section 62. The screw section 62 kneads the resin particles 32 and the adhesive adhered to the surface thereof, thereby spreading an adhesive layer 33 on the surface of the resin particles 32 to obtain the heat-insulating foam particles 31. The heat-insulating foam particles 31 are filled into the hollow section 25 of the laminated molding wall 20 from the tip port of the screw section 62.

[0056] The above-described spreading device 64 is not limited to being provided in the hopper section 63, and may be provided separately from the hopper section 63. In this case, the resin particles 32 with the adhesive spread by another spreading device may be supplied to the hopper section 63.

[0057] The screw feeder 61 may be provided with a transfer device (not shown) for making it movable in the horizontal direction or in the vertical and horizontal directions. Thereby, the tip port serving as the discharge port of the screw section 62 can be moved above an arbitrary filling position of the hollow section 25. Further, a flexible tube may be connected to the screw feeder 61, and the tip port of the flexible tube may be moved by deforming the flexible tube.

[0058] The screw portion 62 more specifically includes a vertically extending cylindrical barrel 62a and a screw 62b disposed across the barrel 62a and the hopper portion 63. The screw 61b has its rotation axis disposed on the central axis of the barrel 62a and is rotatable by a drive device (not shown). When the screw 61b rotates, the spiral screw blades 61c rotate and extrude the resin particles 32 with adhesive toward the tip opening at the lower end. At this time, the screw blades 61c can evenly adhere the adhesive to the surfaces of a large number of resin particles 32 by sending a large number of resin particles 32 with adhesive while kneading them by rotation. In this way, the heat-insulating foam particles 31 kneaded and discharged from the tip opening are filled into the hollow portion 25, and as the adhesive dries and cures, a three-dimensional filled heat-insulating portion 30 is formed in the hollow portion 25 by filling a large number of heat-insulating foam particles 31 in accordance with the shape of the hollow portion 25 and joining them together.

[0059] The screw feeder 61 may be provided with the drive device 41b exemplified in the 3D printer device 40. The drive device 41b can be exemplified by a robot arm capable of moving the screw feeder 61 (and the hopper section 63), but is not limited thereto. A control device 41c that is a personal computer is connected to the drive device 41b, and the control device 41c can control the output operation of the screw feeder 61 and the movement by the drive device 41b by executing a program in which an arithmetic processing unit controls the operation of the screw feeder 61. The program can control the filling of the heat-insulating foam particles 31 based on the 3D printer data stored in the storage device of the control device 41c. As an example of the filling control, execution or stop of the discharge of the heat-insulating foam particles 31 from the screw feeder 61, movement and stop of the screw feeder 61 can be exemplified. Execution and stop of the discharge of the heat-insulating foam particles 31 from the screw feeder 61 include those that perform opening and closing control of an opening and closing lid provided at the tip port of the screw section 62, those that perform drive control to drive or stop a motor that rotationally drives the screw section 62 that performs kneading and extrusion of the screw feeder 61, and the like. As the 3D printer data, 3D-CAD data can be used. Further, this 3D printer data can utilize the data used for forming the laminated wall 20. That is, 3D-CAD data including the laminated wall 20 and the filled heat-insulating section 30 can be created, and the 3D printer data created based on it can be used for the formation of the laminated wall 20 and the formation of the filled heat-insulating section 30.

[0060] Forming steps of 3D printer building form

[0061] To form the wall 10 as a 3D printer building structure, at least the following steps are required. <First step> Step of forming the laminated wall 20 <Second step> Filling step of forming the filled heat-insulating section 30

[0062] In the first step, the laminating material is linearly output from the output nozzle 41a and laminated along the height direction of the wall 10, whereby the laminated wall 20 is formed.

[0063] The second step can be carried out manually, using the 3D printer device 40, using the filling supply device 60, or any combination of one or more of these. Hereinafter, the second step using the 3D printer device 40 will be exemplified and described. In the second step, the heat-insulating foam particles 31 with the adhesive layer 33 spread on the surface of the resin particles 32 are output from the output nozzle 41a. At the time of this output, the adhesive layer 33 of the heat-insulating foam particles 31 has not yet hardened, and a large number of heat-insulating foam particles 31 are output as a massive solid 34 in which they are stuck together in a lump. Each massive solid 34 is exemplified as a spherical one in FIG. 1. The filling heat-insulating part 30 is laminated and formed as an aggregate of a large number of spherical massive solids 34. Then, in the filling heat-insulating part 30, the adhesive that was liquid at the time of filling dries and hardens over time to form the adhesive layer 33, and the shape filled in the hollow part 25 is retained.

[0064] The switching between the first step and the second step can be performed, for example, by switching the supply path connected to the nozzle device 41. When executing the first step, the fourth supply path 51, which is a pipe connected to the outlet side of the laminate supply device 50 shown in FIG. 3, is connected to the nozzle device 41. When executing the second step, the third supply path 49 is connected to the nozzle device 41 as shown in FIG. 3.

[0065] And there are various patterns as the laminated forming flow formed by combining the first step and the second step, which will be exemplified below. <The First Laminated Forming Flow> After the completion of the laminated forming wall 20, the wall 10 is completed by forming the filling heat-insulating part 30. In this case, the filling heat-insulating part 30 can be formed by at least one of the 3D printer device 40, the filling supply device 60, and manual work. <The Second Laminated Forming Flow> The wall 10 is completed by alternately repeating the laminated forming of the laminated forming wall 20 and the filling heat-insulating part 30. In this case, the filling heat-insulating part 30 can be formed by at least one of the 3D printer device 40, the filling supply device 60, and manual work. <The Third Laminated Forming Flow> After the completion of the filled heat insulation part 30, the wall 10 is completed by laminating and forming the laminated forming wall 20. In this case, the filled heat insulation part 30 is preferably formed by a 3D printer device 40.

[0066] Features of 3D printer building form and its forming method, etc.

[0067] The 3D printer building formwork and its forming method have at least the following characteristics based on its composition, function, and effect.

[0068] (1) The forming method of the 3D printer building formwork includes a first step of forming a laminated forming wall 20 with a hollow structure by a 3D printer device 40 as the wall 10 of the building, and a second step of filling the hollow part 25 of the laminated forming wall 20 with heat-insulating foam particles 31 output by the 3D printer device 40 to form a filled heat insulation part 30. Also, the forming method of the heat insulation material for the 3D printer building formwork is to fill the hollow part 25 of the laminated forming wall 20 with a hollow structure, which is a 3D printer building formwork constituting the wall of the building, with a large number of heat-insulating foam particles 31 having an adhesive layer formed thereon, and then solidify the adhesive layer to form a filled heat insulation part 30 as a "filled heat insulation material". According to this, a filled heat insulation part 30 made of heat-insulating foam particles 31 can be formed in the hollow part 25 of the laminated forming wall 20, and a new heat insulation structure in 3D printer building can be realized.

[0069] (2) The second step may include a step of forming an adhesive layer on the surface of the insulating foam particles 31 before the filling. The insulating foam particles 31 may have an adhesive layer covering the surface. By having an adhesive layer on the surface of the insulating foam particles 31, the insulating foam particles 31 can be filled into the hollow portion 25 by flowing them while being bonded together by the adhesive layer. Therefore, compared to a case where there is no adhesive layer, it is possible to prevent the insulating foam particles 31 from scattering around or the filling from collapsing. This is particularly advantageous when filling an outdoor layered wall with insulating foam particles, and it is possible to effectively prevent the lightweight insulating foam particles from scattering due to the influence of wind outdoors. Furthermore, by having the adhesive layer on the insulating foam particles 31, for example, even if it becomes necessary to make a hole in the layered wall 20 during interior construction or carpentry work, it is possible to avoid inconveniences such as the insulating foam particles 31 leaking out of the hole to the outside.

[0070] (3) The second step may include a step of adhering the heat insulating foamed particles 31 together in a mass form via the adhesive layer 33 after the layers are packed in the hollow portion 25. In this way, the filled heat insulating portion 30 of the heat insulating foamed particles 31 packed in layers in the hollow portion 25 is fixed in the hollow portion 25.

[0071] (4) The insulating foam particles 31 may be biodegradable foam particles derived from biomass, which can increase the recyclability of the wall 10 as a building material after it is dismantled as a 3D printer architectural object.

[0072] (5) The wall 10 as a 3D printer building formwork comprises a laminated wall 20 which is a hollow-structured 3D printer building formwork constituting the wall of a building, and a filled heat-insulating part 30 which is a 3D printer building formwork of heat-insulating foam particles 31 provided in the hollow part 25 of the laminated wall 20. Further, the filled heat-insulating part 30 as a heat-insulating material for 3D printer building formwork is a filled heat-insulating material having a large number of heat-insulating foam particles 31 filled in the hollow part 25 of the laminated wall 20 which is a hollow-structured 3D printer building formwork constituting the wall of a building, and an adhesive layer 33 for fixing the heat-insulating foam particles 31 to each other. According to these, a wall 10 having a filled heat-insulating part 30 formed by heat-insulating foam particles 31 in the hollow part 25 of the laminated wall 20 can be realized, and a new heat-insulating structure in 3D printer building can be realized.

[0073] (6) The filled heat-insulating part 30 can be a massive solid 34 in which a large number of heat-insulating foam particles 31 are fixed to each other in a massive form. According to this, for example, when performing operations such as making holes in the laminated wall 20 during interior construction work during building construction or carpentry work after building construction, inconveniences such as the heat-insulating foam particles 31 filled and laminated inside leaking to the outside through the holes can be avoided.

[0074] (7) The building has a 3D printer building formwork as the wall 10. Further, the building has a wall provided with a heat-insulating material for 3D printer building formwork. According to these, a new building having the advantages of 3D printer building formwork can be realized.

[0075] (8) A program that causes a computer to operate as a control device 41c for forming a 3D printer building form, the program causing, based on 3D printer data, a nozzle device 41 provided in a 3D printer device 40 to output a laminating material to form a laminated molding wall 20 having a hollow structure for forming the 3D printer building form; causing, based on the 3D printer data, the nozzle device 41 to output a filler having heat-insulating foam particles 31 to form a filled heat-insulating portion 30 in a hollow portion 25 of the laminated molding wall 20; and causing, based on the 3D printer data, the nozzle device 41 to be moved in three-dimensional directions by a driving device 41b provided in the 3D printer device 40. According to this program, the 3D printer device 40 can form the laminated molding wall 20 using different materials and the filled heat-insulating portion 30 using common 3D printer data.

[0076] Modification examples of the embodiment

[0077] In the above embodiment, an example of forming the wall 10 as a 3D printer building form has been described. However, the wall 10 can be configured as a wall partitioning the inside and outside of a building or as a wall partitioning the internal space of a building. Further, the wall 10 can be formed not only as a wall extending in the vertical direction but also as a ceiling or a floor of a building.

[0078] In the above embodiment, a wall having a flat shape without unevenness on the surface has been exemplified as the wall 10. However, the wall as a 3D printer building form may have a curved surface curved in the three-dimensional direction.

[0079] In the above embodiment, a wall having an L-shaped plan view has been exemplified as the wall 10. However, other shapes may be used, and the wall may have an opening in the shape of a hole for installing a window frame.

[0080] In the above embodiment, a wall having a single row of hollow portions 25 in its thickness direction has been exemplified as the wall 10. However, a wall having two or more rows of hollow portions partitioned from each other in the thickness direction may be used.

Explanation of Reference Numerals

[0081] 10 Wall (3D printed architectural structure) 20 Additive Manufacturing Walls 21 Exterior wall 22 Inner wall 23 Side wall 24 Reinforcement 25 Hollow part 30 Filling insulation section 31 Heat insulating foam particles 32 Resin particles 33 Adhesive layer 34 Lumpy solids 40 3D Printer Equipment 41 Nozzle device 41a Output nozzle 41b Drive unit 41c Control device 42 Resin particle supply device 43 Adhesive supply device 44 Resin particle stocker 45 Adhesive Stocker 46 First Supply Route 47 Second Supply Route 48 Junction 49 Third Supply Route 50 Laminated material supply device 51 4th Supply Route 60 Filling and feeding device 61 Screw Feeder 62 Screw section 63 Hopper section 64 Spreading device

Claims

1. A heat insulation material is formed by filling a hollow portion of a laminated wall having a hollow structure formed of a 3D printer building form that constitutes a wall of a building with a large number of heat insulation foam particles having an adhesive layer formed thereon and then solidifying the adhesive layer. A method for forming a heat insulation material for a 3D printer building form.

2. A filled heat insulation part having a large number of heat insulation foam particles filled in a hollow portion of a laminated wall having a hollow structure formed of a 3D printer building form that constitutes a wall of a building, and an adhesive layer for fixing the heat insulation foam particles to each other. A heat insulation material for a 3D printer building form.

3. The heat insulation foam particles are biodegradable foam particles derived from biomass. The heat insulation material for a 3D printer building form according to claim 2.

4. A building having a wall provided with the heat insulation material for a 3D printer building form according to claim 2 or 3.

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