JP2016175287A - Laminate molding material structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve in a laminate molding material structure molded by laminating layers, a laminate molding material structure increased in strength of a composite structure in the case of using a plurality of materials having different thermal expansion coefficients.SOLUTION: A laminate molding material structure is such that: in a laminate molding material structure having a plurality of layers in which a first material and a second material are molded in the same layer, the layer has a first molding part comprising the first material and configuring a first molding body over the plurality of layers, a first layer in the layer has the first molding part, and a first projection part connected to the first molding part, a second layer in the layer is laminated on the first layer, and has the first molding part, and a first protrusion connected to the first projection part, and one or more of a pair of the first layer and the second layer are provided in the plurality of layers.SELECTED DRAWING: Figure 1A

Description

  The present invention relates to a three-dimensional additive manufacturing technique, and more particularly, to a three-dimensional additive manufacturing structure using a plurality of materials.

  Three-dimensional CAD (Computer Aided Design) data is divided into layers, and the layers are adhered to each divided layer while adding materials so that the layers are stacked on top of each other, thereby producing a three-dimensional structure from a numerical representation. The method is defined in the international standard as Additive Manufacturing. This manufacturing method invented in the 1980s is generally called a 3D printer. In recent years, 3D printers are attracting attention as a new manufacturing method because they can easily manufacture complex shapes without using a mold if there is 3D CAD data.

  In 3D printers, shapes that were once difficult to manufacture, such as mesh shapes and porous shapes, can be easily and accurately manufactured, unlike removal processing by cutting and molding processing in which a material is poured into a mold and hardened. Furthermore, it is also expected to facilitate modeling in which a plurality of types of materials are freely arranged in the same layer. This is because, by modeling using a plurality of materials, it is possible to realize a three-dimensional shape model having a new function utilizing the characteristics of each material.

  For example, by combining a conductive material and an insulating material, a three-dimensional shape model having an electronic circuit function is realized. Further, by combining a hard material and a flexible material, a three-dimensional shape model having a function having both strength and flexibility can be realized. These functions can be easily realized without developing new materials.

Japanese Unexamined Patent Publication No. 2000-190086

  As a problem when the first material and the second material having different characteristics are formed in the same layer, if the thermal expansion coefficients of the two are different, stress is generated at the joint interface between the two due to a shrinkage difference caused by a temperature change. At this time, when the bonding strength of the interface is low, there is a problem in that interface peeling occurs and sufficient strength as a composite structure cannot be obtained. In particular, when the three-dimensional electrical wiring is formed by using the first material as a conductive material and the second material as an insulating material, when the interface peeling occurs, the protection performance of the first material by the second material is increased. There is a possibility that it may lead to a serious problem of deterioration in reliability such as insufficient wiring leading to disconnection of wiring.

  Patent Document 1 is disclosed as a layered manufacturing method using two types of materials. According to this method, when the first material is cured in the process of forming the desired three-dimensional shaped part by stacking the cured layers, the first material is provided with a portion that is not partially cured. The member for embedding by the 2nd material manufactured by the separate process is embedded in the removed part. Then, by continuing the modeling, it is possible to model a composite structure in which a member made of the second material is embedded in a modeled article made of the first material.

  However, the method of Patent Document 1 has a problem that the bonding at the interface between the first material and the second material is not strengthened, and sufficient strength as a composite structure cannot be obtained.

  The present invention has been made in view of the above-described problems, and the object of the present invention is to provide a composite structure in which a plurality of materials having different thermal expansion coefficients are used in a layered structure formed by stacking layers. The object is to realize an additive manufacturing structure with increased strength.

  The additive manufacturing structure according to the present invention includes an additive manufacturing structure having a plurality of layers in which the first material and the second material are formed in the same layer, and the layer includes a plurality of the first materials. It has the 1st modeling part which constitutes the 1st modeling object straddling the layer, and the 1st layer in the layer connects the 1st modeling part and the 1st modeling part. A first protrusion that is stacked on the first layer and is connected to the first modeling portion and the first protrusion. One or more sets of stacked layers of the first layer and the second layer are provided in the plurality of layers.

  ADVANTAGE OF THE INVENTION According to this invention, the lamination modeling structure which raised the intensity | strength of the composite structure at the time of using the several material from which a thermal expansion coefficient differs in the lamination modeling structure modeled by laminating | stacking a layer is realizable.

It is sectional drawing which shows the structure of the layered modeling structure of the 1st Embodiment of this invention. It is a side view which shows the modeling structure by the 1st material of the layered modeling structure of the 1st Embodiment of this invention. It is a top view which shows the modeling structure by the 1st material of the layered modeling structure of the 1st Embodiment of this invention. It is sectional drawing which shows the manufacturing method of the layered modeling structure of the 1st Embodiment of this invention. It is sectional drawing which shows the manufacturing method of the layered modeling structure of the 1st Embodiment of this invention. It is sectional drawing which shows the manufacturing method of the layered modeling structure of the 1st Embodiment of this invention. It is sectional drawing which shows the structure of the layered modeling structure of the 1st Embodiment of this invention. It is a side view which shows the modeling structure by the 1st material of the layered modeling structure of the 2nd Embodiment of this invention. It is a top view which shows the modeling structure by the 1st material of the layered modeling structure of the 2nd Embodiment of this invention. It is a side view which shows the modeling structure by the 1st material of the layered modeling structure of the 3rd Embodiment of this invention. It is a bottom view which shows the modeling structure by the 1st material of the layered modeling structure of the 3rd Embodiment of this invention. It is a side view which shows the modeling structure by the 1st material of the layered modeling structure of the 4th Embodiment of this invention. It is a top view which shows the modeling structure by the 1st material of the layered modeling structure of the 4th Embodiment of this invention. It is sectional drawing which shows the structure of the layered modeling structure of the 5th Embodiment of this invention. It is a bottom view which shows the structure of the layered modeling structure of the 5th Embodiment of this invention. It is a top view which shows the structure of the layered modeling structure of the 5th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the preferred embodiments described below are technically preferable for carrying out the present invention, but the scope of the invention is not limited to the following.
(First embodiment)
FIG. 1A is a cross-sectional view showing a structure of a layered structure structure according to a first embodiment of the present invention. FIG. 1B is a side view showing a modeling structure by the first material of the layered modeling structure of the present embodiment. FIG. 1C is a top view from the direction AA ′ of FIG. 1B showing a modeling structure of the first material of the layered modeling structure of the present embodiment.

  The layered manufacturing structure 1 of the present embodiment has a plurality of layers formed by modeling the first material and the second material in the same layer, and the layer is made of the first material. It has the 1st modeling part 5 which constitutes the 1st modeling object 2 straddling a plurality of the above-mentioned layers, and the 1st layer 3 in the above-mentioned layer is the 1st modeling part 5 and the 1st above-mentioned layer A first protrusion 6 connected to the modeling part 5, and the second layer 4 among the layers is laminated on the first layer 3, and the first modeling part 5 and the first A first protrusion 7 connected to one protrusion 6, and one or more pairs of the first layer 3 and the second layer 4 are provided in the plurality of layers. It has been. The first protrusion 6 and the first protrusion 7 are made of the first material.

  In the layered structure 1, the first protrusion 6 is in the first layer 3 and is connected to the first modeling part 5, and the first protrusion 7 is in the second layer 4. The first protrusion 6 is connected to the first protrusion 6.

  With the above structure, the first model 2 made of the first material is fitted in the region where the first protrusion 6 and the first protrusion 7 connected to the first material 2 are made of the second material. By being trapped, it is possible to firmly adhere to the second material region. Therefore, even if stress is generated at the bonding interface between the first material and the second material due to the difference in thermal expansion coefficient between the first material and the second material, the occurrence of interface peeling is suppressed.

  In FIGS. 1A and 1B, the first protrusion 7 is provided on the upper side of the first protrusion 6, but may be provided on the lower side of the first protrusion 6. In addition, one or more sets of the first protrusions 6 and the first protrusions 7 in the set of the first layer 3 and the second layer 4 can be provided. For example, FIG. 1C shows the case of four sets, but is not limited to this.

  In the specific form of the layered structure 1 described below, a three-dimensional shape model having a function of an electronic circuit is assumed, and the first material and the second material corresponding to this are exemplified. The present embodiment is not limited to this.

  The first material is a material having a property as a conductor. Examples of this material include, but are not limited to, copper, silver, and aluminum.

  As a method for laminating the first material, for example, a method in which the first material is heated and melted by a heater or the like and a predetermined amount is laminated at a predetermined position in the layer is possible. When supplying a predetermined amount of the first material, the first material may be processed into a shape that can be easily melted, such as powder, filler, or line. Further, it may be pasted by mixing with a substance that vaporizes when the first material is melted.

  As another method of laminating the first material, the material is melted by concentrating heat energy while supplying the material from the method classified by ASTM (American Society for Testing and Materials) as the method of additive manufacturing. It is also possible to use a directed energy deposition scheme.

  The second material has a property as an insulator, and plastic is a typical material. Specific examples include, but are not limited to, ABS (Acrylonitrile Butadiene Styrene), polycarbonate, polylactic acid, acrylic, polyetherimide, polyphenylsulfone, nylon, polyethylene, silicone, epoxy, and the like.

  As a method for laminating the second material, a method classified by ASTM as an additive manufacturing method can be used. For example, there is a material extrusion method in which the second material heated and melted is pushed out from an opening such as a nozzle and deposited. Another method includes a material jetting method in which droplets of the second material are jetted, selectively cured, and deposited.

  Regarding the melting and curing of the second material, if it is a thermoplastic resin, a predetermined amount of the heat-melted material can be supplied to a predetermined position and cured by air cooling. In the case of a thermosetting or photocurable resin, the second material is laminated by spraying droplets of the material and heating it if it is a thermosetting resin, or irradiating ultraviolet rays or the like if it is a photocurable resin. can do.

  2A, 2B, and 2C are cross-sectional views illustrating a method for manufacturing the layered structure 1 of the present embodiment.

  In FIG. 2A, the process of laminating | stacking the 1st layer 3 on the layer which modeled the 1st material and the 2nd material in the same layer is shown. The first layer 3 includes a first modeling part 5 made of the first material, a first protrusion 6 made of the first material connected to the first modeling part 5, and a region made of the second material. And have.

  FIG. 2B shows a step of laminating the second layer 4 on the first layer 3. The 2nd layer 4 has the 1st modeling part 5, the 1st projection part 7 which consists of the 1st material connected to the 1st projection part 6, and the field by the 2nd material.

  FIG. 2C shows a process in which a layered structure 1 having the first shaped body 2 is completed by further laminating layers on the second layer 4. The layer laminated on the second layer 4 has a first modeling part 5 and a region made of the second material.

  FIG. 3 is a cross-sectional view showing a structure in which a plurality of shaped bodies are provided in the layered shaped structure of the present embodiment. In addition to the layered structure 1 shown in FIG. 1A, the layered structure 11 provided with a plurality of objects is composed of a first material and constitutes a second structure 12 that straddles a plurality of layers. The 3rd layer 13 which has the 2nd modeling part 15, and is different from the 1st layer 3 and the 2nd layer 4 among the above-mentioned layers is the 2nd modeling part 15, and the 1st material And a second protrusion 16 connected to the second modeling portion 15, and the fourth layer 14, which is different from the first layer 3 and the second layer 4, of the layers, The second layer 13 is laminated on the third layer 13, and has a second projecting portion 15 and a second projecting portion 17 made of the first material and connected to the second projecting portion 16. One or more pairs of the four layers 14 are provided in the plurality of layers.

  In the layered structure 11, the second protrusion 16 exists in the third layer 13 and is connected to the second structure 15, and the second protrusion 17 exists in the fourth layer 14. The second protrusion 16 is connected.

  In FIG. 3, the second protrusion 17 is provided on the upper side of the second protrusion 16, but may be provided on the lower side of the second protrusion 16. Further, one or more sets of the second protrusions 16 and the second protrusions 17 in the set of the third layer 13 and the fourth layer 14 can be provided.

  As shown in FIG. 3, the set of the first projecting portion 6 and the first projecting portion 7 and the set of the second projecting portion 16 and the second projecting portion 17 include the layered structure 11. It can arrange | position so that it may overlap in the lamination direction. With such an arrangement, it is possible to prevent the protrusions and the protrusions from interfering with each other and to arrange a plurality of shaped bodies with high density.

  In the present embodiment, the layered structure is made of two kinds of materials, but the present invention is not limited to this, and a layered structure having any of a plurality of materials may be used.

As described above, according to the present embodiment, in a layered structure that is formed by stacking layers, a layered structure that has improved the strength of the composite structure when a plurality of materials having different thermal expansion coefficients are used. Can be realized.
(Second Embodiment)
FIG. 4A is a side view showing a modeling structure made of a first material of the layered modeling structure according to the second embodiment of the present invention. FIG. 4B is a top view from the BB ′ direction in FIG. 4A showing a modeling structure of the first material of the layered modeling structure of the present embodiment.

  The structure of the layered modeling structure of the present embodiment is different from the layered modeling structure 1 of the first embodiment in that the first protrusion 6 a surrounds the outer periphery of the first modeling unit 5. is there. Other structures are the same as the layered structure 1 of the first embodiment. Also in the present embodiment, a plurality of shaped bodies can be arranged at high density in the same manner as the layered shaped structure body 11 of the first embodiment shown in FIG.

According to this embodiment, in the layered structure that is formed by stacking layers, it is possible to realize a layered structure in which the strength of the composite structure is increased when a plurality of materials having different thermal expansion coefficients are used.
(Third embodiment)
FIG. 5: A is a side view which shows the modeling structure by the 1st material of the layered modeling structure of the 3rd Embodiment of this invention. FIG. 5B is a bottom view from the CC ′ direction in FIG. 5A, showing a modeling structure made of the first material of the layered modeling structure of the present embodiment.

  The structure of the additive manufacturing structure of the present embodiment is different from the additive manufacturing structure 1 of the first embodiment because the fifth layer 18 to be stacked on the second layer 4 is made of the first material. The hook portion 8 is connected to the first protrusion portion 7, and the hook portion 8 has a structure wider than the first protrusion portion 7. For example, as shown in FIG. 5A, the width direction can be a width in the left-right direction of the paper surface, but is not limited thereto. Other structures are the same as the layered structure 1 of the first embodiment. Also in the present embodiment, a plurality of shaped bodies can be arranged at high density in the same manner as the layered shaped structure body 11 of the first embodiment shown in FIG.

According to this embodiment, in the layered structure that is formed by stacking layers, it is possible to realize a layered structure in which the strength of the composite structure is increased when a plurality of materials having different thermal expansion coefficients are used.
(Fourth embodiment)
FIG. 6A is a side view showing a modeling structure made of a first material of a layered modeling structure according to a fourth embodiment of the present invention. FIG. 6B is a top view from the DD ′ direction of FIG. 6A showing a modeling structure of the first material of the layered modeling structure of the present embodiment.

  The structure of the additive manufacturing structure of the present embodiment is different from the additive manufacturing structure 1 of the first embodiment. In the additive manufacturing structure of the present embodiment, the first layer 3b is the first modeling part. 5, a first protrusion 6 made of the first material and connected to the first modeling part 5, and a first protrusion 7 a made of the first material and connected to the first protrusion 6. That is. Further, the second layer 4 may not be provided. Other structures are the same as the layered structure 1 of the first embodiment. Also in the present embodiment, a plurality of shaped bodies can be arranged at high density in the same manner as the layered shaped structure body 11 of the first embodiment shown in FIG.

According to this embodiment, in the layered structure that is formed by stacking layers, it is possible to realize a layered structure in which the strength of the composite structure is increased when a plurality of materials having different thermal expansion coefficients are used.
(Fifth embodiment)
FIG. 7A is a cross-sectional view showing the structure of a layered structure structure according to a fifth embodiment of the present invention. FIG. 7B is a bottom view from the EE ′ direction of FIG. 7A showing the structure of the layered structure structure of the present embodiment. FIG. 7C is a top view from the FF ′ direction in FIG. 7A showing the structure of the layered structure structure of the present embodiment.

  The additive manufacturing structure of the present embodiment includes an additive manufacturing structure having a plurality of layers in which the first material and the second material are formed in the same layer, and the layer is formed of the first material. The first modeling part 5a constituting the first modeling body 2a straddling the layers of the first layer 3a, the first layer 3a of the layers includes the first modeling part 5a and the first modeling. A first protrusion 9 connected to the portion 5a, and the second layer 4a of the layers is laminated on the first layer 3a, and the first modeling portion 5a and the first A first protrusion 10 connected to the protrusion 9, and one or more sets of stacked layers of the first layer 3 a and the second layer 4 a are provided in the plurality of layers. ing. The first protrusion 9 and the first protrusion 10 are made of the second material.

  By setting it as said structure, the 1st modeling body 2a which consists of a 1st material has the 1st protrusion part 9 and the 1st projection part 10 which consist of a 2nd material in the 1st modeling body 2a. By fitting, it can be firmly adhered to the region of the second material. Therefore, even if stress is generated at the bonding interface between the first material and the second material due to the difference in thermal expansion coefficient between the first material and the second material, the occurrence of interface peeling is suppressed.

  In FIG. 7A, the first protrusion 10 is provided on the upper side of the first protrusion 9, but may be provided on the lower side of the first protrusion 9. In addition, one or more sets of the first protrusions 9 and the first protrusions 10 in the set of the first layer 3a and the second layer 4a can be provided. For example, FIG. 7B and FIG. 7C show four sets, but the present invention is not limited to this.

  According to this embodiment, in the layered structure that is formed by stacking layers, it is possible to realize a layered structure in which the strength of the composite structure is increased when a plurality of materials having different thermal expansion coefficients are used.

  The present invention is not limited to the above embodiment, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1, 11 Laminated modeling structure 2 1st modeling body 3, 3a, 3b 1st layer 4, 4a 2nd layer 5, 5a 1st modeling part 6, 6a, 9 1st protrusion part 7, 7a DESCRIPTION OF SYMBOLS 10 1st protrusion part 8 Hook part 12 2nd modeling body 13 3rd layer 14 4th layer 15 2nd modeling part 16 2nd protrusion part 17 2nd protrusion part 18 5th layer

Claims (10)

In the layered structure having a plurality of layers formed by shaping the first material and the second material in the same layer,
The layer has a first modeling part that constitutes a first modeling body made of the first material and straddling a plurality of the layers,
The first layer of the layers has the first modeling part and a first protrusion connected to the first modeling part,
The second layer of the layers is laminated on the first layer, has the first modeling portion, and a first protrusion connected to the first protrusion,
One or more sets of the stacked layers of the first layer and the second layer are provided in the plurality of layers. The additive manufacturing structure according to claim 1, wherein the first protrusion and the first protrusion are made of the first material. The layer has a second modeling part that constitutes a second modeled body made of the first material and straddling a plurality of the layers,
Of the layers, a third layer different from the first and second layers is the second modeling part and the second layer made of the first material and connected to the second modeling part. And a protrusion of
Of the layers, a fourth layer different from the first and second layers is laminated on the third layer, and is formed of the second modeling portion and the first material. A second protrusion connected to the two protrusions,
3. The additive manufacturing structure according to claim 2, wherein one or more sets of the third layer and the fourth layer are provided in the plurality of layers. 4. The additive manufacturing structure according to claim 2, wherein the first protrusion surrounds an outer periphery of the first modeling part. 5. A fifth layer of the layers is laminated on the second layer, and includes the first modeling portion and a hook portion made of the first material and connected to the first protrusion. ,
The additive manufacturing structure according to claim 2, wherein the hook portion is wider than the first protrusion. In the layered structure having a plurality of layers formed by shaping the first material and the second material in the same layer,
The layer has a first modeling part that constitutes a first modeling body made of the first material and straddling a plurality of the layers,
The first layer of the layers is composed of the first modeling part, the first projecting part made of the first material and connected to the first modeling part, and the first material. A first protrusion connected to the first protrusion,
One or more of the first layers are provided in one or more of the plurality of layers. The layer has a second modeling part that constitutes a second modeled body made of the first material and straddling a plurality of the layers,
Of the layers, a second layer different from the first layer includes the second modeling part and a second projecting part made of the first material and connected to the second modeling part. And a second protrusion made of the first material and connected to the second protrusion,
The layered structure according to claim 6, wherein at least one second layer is provided in the plurality of layers. The additive manufacturing structure according to claim 1, wherein the first protrusion and the first protrusion are made of the second material. The layered manufacturing structure according to claim 1, wherein the first material has a conductor and the second material has an insulator. The layered manufacturing structure according to claim 1, wherein the first modeling body is an electrical wiring.