JP2016068297A - Lamination molded article and lamination molding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce plural lamination molded articles which have a shape of a divided solid body, and joint the lamination molded article with correct orientation and correct arrangement, thereby obtaining a target solid body.SOLUTION: A lamination molded article 100 is a lamination molded article obtained by laminating planar-shaped material layers 1 formed into a predetermined shape. A face obtained by connecting end parts 1a of the material layers 1 becomes a side face 110 of the lamination molded article 100. The side face 110 has a unique irregular shape 10 which is unique to the side face 110 formed by irregularity of the material layer end parts 1a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an additive manufacturing method and an additive manufacturing method.

  In recent years, 3D printers have been actively used. By using a 3D printer, it is possible to easily produce a solid body having a complicated shape without using an expensive mold or cutting process. In addition, by using a material called a support material that is removed after modeling, a structure in which a plurality of solid bodies are combined with a space therebetween can be produced at once.

  In addition, there is no clear definition in the name of 3D printer, and it usually means a device that forms a solid by the additive manufacturing method. Such a modeling method is generally referred to as layered manufacturing or additive manufacturing. In this specification, the name of additive manufacturing is used, and it is defined as including the above-described general techniques such as additive manufacturing and 3D printer.

  In additive manufacturing, a two-dimensional layer having a predetermined shape is formed based on three-dimensional data, and a three-dimensional structure is produced by sequentially stacking the layers. Manufacturing methods include a hot melt lamination method, an optical shaping method, a powder sintering method, an ink jet method, a projection method, and an ink jet powder lamination method.

  As described above, various three-dimensional objects can be created using the additive manufacturing method. However, anything can be created. For example, the size is restricted depending on the apparatus size. On the other hand, there is a demand for a layered object that exceeds the size of the apparatus.

  For example, Patent Document 1 discloses a technique for satisfying such a demand. In this technique, a divided master model obtained by dividing a large master model (solid) is used. Each divided master model is separately layered. Then, by adhering the respective divided models, a master model having a size exceeding the limitation of the apparatus size can be produced.

JP 2009-847 A

  However, in the technique of Patent Document 1, there is a fear that the arrangement may be wrong when the divided parts are joined. This is because there is no means for accurately determining where each part is placed. If the number of divisions is small and the shapes of the parts are greatly different, mistakes are unlikely to occur. However, if the number of divisions is large and the shapes are similar, the risk of joining errors increases.

  This invention is made | formed in view of said problem, and it aims at providing the method of joining correctly the parts produced by the layered modeling.

  In order to solve the above-described problems, the layered object of the present invention is a layered object formed by laminating a planar material layer formed in a predetermined shape, and has a side surface obtained by connecting end portions of the material layer. Of these, at least one side surface has a concavo-convex shape unique to the side surface formed by the concavo-convex portion of the end portion of the material layer.

  The effect of this invention is that the parts produced by additive manufacturing can be joined correctly.

It is a perspective view which shows the 1st Embodiment of this invention. It is a perspective view which shows the 2nd Embodiment of this invention. It is a perspective view which shows the 3rd Embodiment of this invention. It is a side view which shows the 4th Embodiment of this invention. It is a side view in connection with the 5th Embodiment of this invention. It is a perspective view which shows the 5th Embodiment of this invention. It is a perspective view which shows the manufacturing method of the 5th Embodiment of this invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.
(First embodiment)
FIG. 1 is a perspective view showing the first embodiment. The layered object 100 is a layered object obtained by laminating a planar material layer 1 formed in a predetermined shape. A surface obtained by connecting the end portions 1 a of the material layer 1 becomes the side surface 110 of the layered object 100. The side surface 110 has a unique uneven shape 10 unique to the side surface 110 formed by the unevenness of the material layer end 1a.

With the above configuration, it is possible to identify the layered object 100 and the direction of the layered object 100.
(Second Embodiment)
FIG. 2 is a perspective view for explaining the second embodiment. The planar predetermined shape of the material layer 1 can be formed, for example, by spreading the material in a strip shape. In FIG. 1, an example in which the unique uneven shape 10 is formed on the side surface 110 using the end portion of the strip in the longitudinal direction is shown, but the inherent uneven shape 10 is formed using the end portion 1 b in the short direction of the strip. May be. In FIG. 2, a portion lacking the substance is provided on the side surface 110 b, and the inherent concave / convex shape 10 on the concave is formed.

As described above, in the layered object 100, when the substance is spread in a strip shape, the unique uneven shape 10 can be formed in both the longitudinal direction and the short direction of the strip. In addition, the natural uneven shape 10 can be formed by using any one of concave and convex.
(Third embodiment)
FIG. 3 is a perspective view showing a third embodiment of the present invention. In the present embodiment, a method of using a divided part 20 obtained by dividing a solid when a large solid is produced will be described. Each divided part 20 has the same structure as the layered object 100 of the first or second embodiment.

  In order to produce a solid body, first, a plurality of divided parts 20 are separately layered. A large solid is obtained by joining the divided parts 20 together. At this time, each divided part 20 must be joined in the correct arrangement and the correct orientation.

  In the present embodiment, as shown in FIG. 3, a unique uneven shape 10 is provided on each surface of each divided part 20. Note that the subscripts in the figure indicate that the unique uneven shapes 10 are different. The naming convention is arbitrary.

  Using these unique concavo-convex shapes 10, the divided parts 20 can be identified, and each divided part 20 can be joined with the correct arrangement and orientation. In addition, as shown in FIG. 3, if the inherent concave / convex shape 10 of the two surfaces to be joined has a concave and convex relationship with the same shape, the divided parts can be positioned. Furthermore, since the unevenness is engaged, the shear strength of the joint surface is improved.

As described above, according to the present embodiment, correct placement, positioning, and bonding strength of the divided parts can be performed.
(Fourth embodiment)
FIG. 4 is a side view showing a fourth embodiment of the present invention. FIG. 4 shows an example in which a solid 200 that is long in the left-right direction in the figure is produced by joining six divided parts 20.

  The divided parts 20a, 20b,... Have a unique uneven shape 10 on the joint surface. The two surfaces to be joined are formed with a pair of concave and convex natural concave / convex shapes 10 having the same shape. For example, the divided part 20a is formed with a convex unique uneven shape 10a, and the concave part 10b 'having the same shape is formed on the opposing surface of the divided part 20b. Using these unique concavo-convex shapes 10, it is possible to identify the mating partner and the direction. Moreover, positioning can be performed simultaneously by fitting both.

  The identification of the unique concavo-convex shape 10 can be performed optically including visual observation, but may be performed electrically or magnetically. For example, if an electric field is applied to the flat plate electrode, the pattern of the unique uneven shape 10 can be read from the capacitance distribution.

As described above, according to the present embodiment, it is possible to accurately join the divided parts 20 formed by the layered modeling to produce a large solid.
(Fifth embodiment)
FIG. 5 is a side view showing a three-dimensional object 200 manufactured in this embodiment. This solid 200 is assumed to have a hollow structure. In the present embodiment, a divided part having a hollow structure is produced using a support material. At this time, the support material and the material layer are layered so as to form a rectangular parallelepiped, and are joined so that simple blocks are stacked. And after joining, if a support material is removed, it is the structure that the target solid is made. FIG. 5 shows two side views (a) and (b) and a grid for division.

  FIG. 6 is an example of the divided part 20 used here. The material layer 1 having the designed shape and the support material form a rectangular parallelepiped. On the side surface of the material layer 1, unique uneven shapes 10x, 10y, and 10z are formed. Here, an example in which the unique uneven shapes 10 are formed at three locations is shown, but the number of the unique uneven shapes 10 is arbitrary as long as information that can identify the relative position and orientation in which the divided parts 20 should be arranged is obtained. You can decide. The unique uneven shape 10 may be a barcode, for example.

  FIG. 7 is a perspective view showing a procedure when joining the divided parts 20. By referring to the unique concavo-convex shape 10 provided in the divided part 20, it is possible to accurately know the partner to which the divided part 20 is to be joined. Then, based on the identification result, the divided parts 20 are joined so that the blocks are sequentially stacked. The figure shows a situation where four divided parts 20 are joined. At this time, by referring to the unique concavo-convex shape 10 provided in each divided part 20, it is possible to accurately know the divided part 20 and the direction to be joined next. Here, if the unique concavo-convex shape 10 can be acquired by a machine such as a barcode, the work can be automated. For example, a machine can read a bar code, form an adhesive layer, accurately place and bond. When all the divided parts 20 are joined, the support material 2 is removed. Thus, the target solid can be obtained.

  As described above, according to the present embodiment, a target solid can be obtained by a very simple joining operation.

  From the first embodiment to the fifth embodiment, it has been assumed that the layered object itself is used. However, the same effect can be obtained even if a replica produced using the layered object of these embodiments as a master is used.

  The present invention has been described above using the above-described embodiment as an exemplary example. However, the present invention is not limited to the above embodiment. That is, the present invention can apply various modes that can be understood by those skilled in the art within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Material layer 2 Support material 10 Intrinsic uneven | corrugated shape 20 Divided parts 100 Laminated modeling 110 Side surface 200 Three-dimensional

Claims (10)

  A layered object for forming a solid body having a predetermined shape by joining a plurality of layered objects formed by laminating planar material layers formed in a predetermined shape, wherein the bonding surface of the layered object is formed by the material layer A layered object having an uneven shape unique to the formed joint surface.   The layered object according to claim 1, wherein the uneven shape unique to the joint surface is an uneven shape unique to the joint surface that is fitted to the joint surface of the layered object to be joined.   The layered object according to claim 1 or 2, wherein the uneven shape unique to the joint surface of at least one of the layered objects includes the three-dimensional identification information.   The layered object according to claim 3, wherein the identification information is identification information read optically, electrically, or magnetically.   5. A replica of the layered object manufactured using the layered object of claim 1 as a master.   A solid body obtained by joining a plurality of layered objects according to claim 1 or 4 or replicas of the layered objects according to claim 5 in a predetermined arrangement.   A method for manufacturing a layered object for forming a solid body having a predetermined shape by joining a plurality of layered objects formed by laminating planar material layers formed in a predetermined shape, wherein the material layer having a predetermined shape is formed. The method for producing a layered object is characterized by laminating the material layers, and forming a concavo-convex shape unique to the bonding surface made of the substance layer on a bonding surface of the layered object.   The method for manufacturing a layered object according to claim 7, wherein the support layer is formed around the material layer so that the outer shape of each layer is substantially the same.   The layered object is placed in a predetermined position on the basis of the uneven shape unique to the joint surface formed on the joint surface of the layered object of claim 1 to claim 4 or the replica of the layered object of claim 5. A three-dimensional manufacturing method comprising arranging and joining the layered object.   The three-dimensional manufacturing method according to claim 9, wherein, when the layered object has a support layer, the support layer is removed after joining the layered object.

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